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"Thomas Alva Edison was widely known as the America's most prolific inventor, even after his death in 1931.[1][2] He held a total of 1,093 U.S. patents (1,084 utility patents and 9 design patents).[3] In 2003, he was passed by "Japanese inventor "Shunpei Yamazaki.[4] On February 26, 2008, Yamazaki was passed by "Australian inventor "Kia Silverbrook.[5] Yamazaki passed Silverbrook in 2017.

Inventors with 200 or more worldwide "utility patents are shown in the following table. While in many cases this is the number of utility patents granted by the "United States Patent and Trademark Office, it may include utility patents granted by other countries, as noted by the source references for an inventor.

Inventor # of patents Country Active Main fields of invention Ref
"Shunpei Yamazaki 5175  "Japan 1976-2018 "Thin film transistors, "Liquid crystal displays, "Solar cells, "Flash memory, "OLED [6][4][7][8][9][10][11][12][13][14][15][16]
"Kia Silverbrook 4745  "Australia 1994-2018 "Printing, "Digital paper, "Internet, "Electronics, "CGI, "Chemical, "DNA, "Lab-on-a-chip, "MEMS, "Mechanical, "VLSI [17][18][4][5][7][8][9][10][11][12][13][14][15]
"Lowell L. Wood, Jr. 1723  "USA 1977-2018 "Mosquito laser, "Nuclear weapons [19][20][15]
Roderick A. Hyde 1592  "USA 2001-2018 Various [21][22][15]
Kangguo Cheng 1409  "USA 2004-2018 "Semiconductor device fabrication, "Semiconductor memory, "Semiconductor device [23][24]
Jun Koyama 1323  "Japan 1991-2018 "Thin film transistors, "Liquid crystal displays, "OLED [25][26]
"Gurtej Sandhu 1293  "India 1991-2018 "Thin film processes and materials, "VLSI, "Semiconductor device fabrication [27][28][7][8][9][16]
Paul Lapstun 1287  "Australia 2000-2018 "Printing, "Digital paper, "Internet, "Electronics, "CGI, "VLSI [29][30][4][9][10][11][12][13][14]
Leonard Forbes 1102  "Canada 1991-2018 "Semiconductor Memories, "CCDs, "Thin film processes and materials, "VLSI [31][32][4][8][9][10][12]
"Thomas Edison 1084  "USA 1847(b)-1931(d) "Electric power, "Lighting, "Batteries, "Phonograph, "Cement, "Telegraphy, "Mining [2][3][4][5][33][34]
Clarence T. Tegreene 1067  "USA 2000-2018 Various [35][36]
Edward K. Y. Jung 1014  "USA 1996-2018 Various [37][38][15]
"Donald E. Weder 1000  "USA 1976-2017 "Florist supplies [39][40][4][7][8][9][16]
George Albert Lyon 993  "Canada 1882(b)-1961(d) "Automotive, "Stainless steel products [4][41]
John F. O'Connor 949  "USA 1864(b)-1938(d) "Railway draft gearing [4][42]
"Jay S. Walker 943  "USA 1998-2018 "Gaming machines [43][44][9][14]
Shou-Shan Fan 940  "China 2006-2018 Carbon nanotubes and applications of carbon nanotubes [45][46]
"Melvin De Groote 925  "USA 1895(b)-1963(d) "Chemical de-emulsifiers [2][4]
Francis H. Richards 894  "USA 1850(b)-19??(d) "Mechanical, "automation [2][4]
Michael J. Sullivan 882  "USA 1977-2018 "Golf balls [47][48]
Rick Allen Hamilton II 876  "USA 1999-2018 Various [49][50][15]
Ahmadreza Rofougaran 833  "USA 2002-2018 "Radio Frequency "Integrated Circuits [51][52]
"Nathan Myhrvold 793  "USA 1994-2018 Various [53][54]
"Jordin T. Kare 788  "USA 1992-2018 Various [55][56]
Warren Farnworth 772  "USA 1990-2017 "Semiconductor packaging [57][58][7][8][9]
William H. Eby 770  "USA 1994-2018 "Transgenic soybeans [59][60]
"Mark Malamud 768  "USA 1997-2018 Various [61][62][15]
Robert W. Lord 759  "USA 2003-2018 Various [63][64]
"Royce A. Levien 757  "USA 1997-2018 Various [65][66][15]
"Carleton Ellis 753  "USA 1876(b)-1941(d) "Margarine, "Polyester, "Anti-knock gasoline, "Paint stripper [42][67]
Salman Akram 745  "USA 1995-2018 "Semiconductor packaging [68][69][7][8][9]
Muriel Y. Ishikawa 745  "USA 2002-2018 Various [70][71][72]
Jeyhan Karaoguz 743  "USA 1996-2018 "Wireless communications, "Computer networks [73][74]
Hideo Ando 729  "Japan 1983-2017 "Optical recording [75][76][14]
George Spector 722  "USA 1976-1998 "Gadgets, "Toys [77][78][7][8]
Austin L. Gurney 711  "USA 1999-2018 "Proteins, "Antibodies [79][80][10][11]
"Elihu Thomson 696  "UK 1853(b)-1937(d) "Electric power, "Arc lamp, "Electric motors, "Lightning arrester, "Arc welder [2][42]
Tetsujiro Kondo 693  "Japan 1987-2018 "Signal processing, "Image processing [81][82]
William I. Wood 653  "USA 1981-2016 "Proteins, "Antibodies [83][84][10][11]
Simon R. Walmsley 651  "Australia 1995-2015 "Printing, "Electronics, "VLSI, "Cryptography [85][86][13][14]
Ali Khakifirooz 645  "USA 2011-2018 "Integrated Circuits, "CMOS, "Semiconductor device fabrication [87][88]
Audrey D. Goddard 623  "USA 1997-2017 "Proteins, "Antibodies [89][90][10][11]
Bruce B. Doris 615  "USA 1995-2018 "Integrated Circuits, "CMOS, "DRAM, "Semiconductor device fabrication [91][92]
"Jerome Lemelson 606  "USA 1923(b)-1997(d) "Toys, "Industrial robots, "Cordless telephones, "Fax machines, "Videocassette recorders [93][2][16][94]
Tadahiro Ohmi 597  "Japan 1981-2018 "Thin film processes and materials, "Semiconductor device fabrication [95][96]
Kie Y Ahn 596  "USA 1976-2018 "Thin film processes and materials, "VLSI, "Semiconductor device fabrication [97][98]
Edward J. Nowak 596  "USA 1979-2018 "Semiconductor device fabrication, "Semiconductor memory, "Semiconductor device [99][100]
"Béla Barényi 595  "Austria 1907(b)-1997(d) "Passive safety in "automobiles [101][102]
Paul J. Godowski 579  "USA 1994-2014 "Proteins, "Antibodies [103][104][10][11]
"Artur Fischer 570  "Germany 1976-2002 "Fasteners, "Construction toys [105][106][107]
Eric C. Leuthardt 567  "USA 2006-2018 "Medical devices [108][109]
John M. Santosuosso 556  "USA 2001-2018 Various [110][111]
Louis L. Hsu 551  "USA 1988-2016 Various [112][113]
"Edwin H. Land 535  "USA 1909(b)-1991(d) "Instant photography, "Polarizing film [114][115]
"Henri Dreyfus 524   "Switzerland 1882(b)-1944(d) "Polymers, "Synthetic fibers, "Dyes [116][117]
Jeffrey P. Gambino 519  "USA 1992-2018 "MEMS, "CMOS, "BiCMOS, "DRAM, "Image Sensors, "RF, "Biosensors, "3D Integrated Circuits [118][119]
Clyde C. Farmer 513  "USA 18??(b)-19??(d) "Railway air brakes [120][42][121]
Heinz Focke 512  "Germany 1976-2013 "Cigarette packaging [122][123][7]
"Mark I. Gardner 511  "USA 1994-2010 "Consumer electronics, "Energy, "Computers, "Semiconductors, "Physics [124][125][7][8]
"Ravi K. Arimilli 507  "India 1992-2017 "Computer architecture, "Semiconductor memory, "Cache coherence, "Symmetric multiprocessing [126][127]
Louis H. Morin 503  "USA 18??(b)-19??(d) "Fasteners, "Locks, "Bobbins [128][121]
Tobin A. King 500  "Australia 2000-2017 "Printing, "Digital paper, "Mechanical [129][130]
Victoria Y. H. Wood 498  "USA 2009-2018 Various [131][132]
Devendra K. Sadana 486  "India 1983-2018 "Solar cells, "OLED, "Integrated Circuits, "CMOS, "DRAM, "LEDs [133][134]
Jack A. Mandelman 481  "USA 1987-2014 Various [135][136]
James M. Hart 477  "USA 1988-2018 "Motor vehicle transmission [137][138]
"Clifford A. Pickover 470  "USA 1992-2018 Various [139][140]
"Ronald S. Cok 465  "USA 1986-2018 "OLED displays; image processing [141][142]
Anthony K. Stamper 464  "USA 1998-2018 "MEMS, "CMOS, "BiCMOS, "Silicon-germanium [143][144]
Chih-Chao Yang 464  "USA 2003-2018 "Integrated Circuits [145][146]
"Robert S. Langer 459  "USA 1983-2018 "Biotechnology, "Drug delivery, "Tissue engineering [147][148]
Akira Nakazawa 456  "Australia 1980-2018 "Printing, "Mechanical [149][150]
Eberhard Ammermann 451  "Germany 1979-2015 "Fungicides [151][152][16]
"Thomas E. Murray 449  "USA 1860(b)-1929(d) "Electrical, "HVAC, "Wheels, "Metal working, "Light dimmer [153][154]
Hongyong Zhang 440  "Japan 1993-2016 "Thin film transistors, "Liquid crystal displays [155][156]
Gregory J. Boss 436  "USA 2008-2018 Various [157][158]
Scott H. Wittkopp 432  "USA 2001-2017 "Motor vehicle transmission [159][160][14]
Kai-Li Jiang 432  "China 2006-2018 Carbon nanotubes and applications of carbon nanotubes [161][162]
"John Hays Hammond, Jr. 417  "USA 1888(b)-1965(d) "Radio control, "Radio communications, "Torpedoes [163][164]
"Hossein Eslambolchi 412  "USA 1993-2017 "Telecommunications, "Network intelligence, "information Technology, "communications technology [165][166]
Wilhelm Brandes 411  "Germany 1976-2010 "Fungicides [167][168]
John L. Melanson 406  "USA 1978-2018 Integrated circuits, semiconductors, mixed-signal products, signal processing, audio and voice components, hearing aids, LED lighting, and motor control [169][170]
Cary L. Bates 405  "USA 1994-2018 "Programming tools, "DBX, "Memory debuggers [171][172][173]
"Stanford R. Ovshinsky 400  "USA 1922(b)-2012(d) "Batteries, "Solar cells, "Liquid crystal displays, "Hydrogen fuel cells, "Computer data storage [174][175][176]
Xuemin (Sherman) Chen 400  "USA 1997-2018 "Computer networks, "Integrated Circuits, "Signal Processing [177][178][179][180][181]
Brian M. O'Connell 390  "USA 2009-2018 Various [182][183]
"Josef Theurer 388  "Austria 1976-2016 "Railroad maintenance machines [184][185][16]
Vincent J. Zimmer 387  "USA 1999-2018 Computer software and firmware [186][187]
Lisa Seacat DeLuca 386  "USA 2009-2018 Various [188][189]
David V. Horak 385  "USA 1992-2018 Various [190][191]
George P. Liang 378  "China 1983-2017 "Gas turbine cooling [192][193]
Hans-Joachim Santel 377  "Germany 1986-2013 "Herbicides, "Pesticides, "Organic chemistry [194][195][16]
Gisela Lorenz 374  "Germany 1990-2015 "Fungicides, "Organic chemistry [196][197][16]
Wael W. Diab 374  "USA 2003-2018 "Computer networks [198][199]
Paul W. Dent 371  "USA 1984-2017 "Wireless communications [200][201]
Garry R. Jackson 367  "Australia 2001-2016 "Printing, "Mechanical [202][203]
Brent A. Anderson 365  "USA 2001-2018 "Semiconductor device fabrication, "Semiconductor memory, "Semiconductor device [204][205]
"George Westinghouse 361  "USA 1846(b)-1914(d) "Electric power, "Electricity meter, "Railway air brake, "Steam engines [206][207][208]
Robert R. Schmidt 350  "Germany 1971-2005 "Herbicides, "Fungicides, "Organic chemistry [209][210]
Mark W. Kroll 349  "USA 1987-2018 "Implantable medical devices [211][212][213]
Jeffrey E. Stahmann 349  "USA 1994-2018 "Medical devices [214][215]
Norman M. Berry 347  "Australia 2006-2016 "Printing, "Mechanical [216][217]
"William Daniel Hillis 344  "USA 1986-2018 Various [218][219]
Carl J. Radens 335  "USA 1994-2018 "Integrated Circuits, "CMOS, "DRAM, "Semiconductor device fabrication [220][221]
Ruilong Xie 327  "USA 2013-2018 "Semiconductor device, "CMOS, "Semiconductor device fabrication [222][223]
Ajith K. Kumar 324  "India 1984-2018 "Electric Power, Energy Management, Rail Transportation, "Mining [224][225]
Keith R. Walker 314  "Saudi Arabia 2003-2018 Various [226][227]
Steven L. Teig 313  "USA 1995-2017 "Integrated Circuits [228][229]
Liang Liu 312  "China 2005-2017 Carbon nanotubes and applications of carbon nanotubes [230][231]
Victoria Smith 308  "USA 2006-2017 "Proteins, "Antibodies [232][233]
Hanson S. Gifford III 306  "USA 1986-2018 "Medical devices [234][235]
Lawrence A. Clevenger 300  "USA 1996-2018 Semiconductor, Cognitive, Memory, Security, Analytics [236][237]
"Robert G. LeTourneau 299  "USA 1888(b)-1969(d) "Earthworks (engineering), "Heavy Equipment, "Industrial Machinery [238][239]
Bengt Lindoff 297  "Sweden 2000-2018 "Wireless communications [240][241]
Victor S. Moore 296  "USA 1982-2018 Various [242][243]
Kulvir S. Bhogal 295  "USA 2003-2018 Various [244][245]
Daniel J. Winarski 295  "USA 1982-2018 Various [246][247]
"Dean L. Kamen 292  "USA 1979-2018 "Battery-powered electric vehicles, "Medical devices, "Stirling engines, "Water purification, "Wheelchairs [248][249]
William R. Tonti 291  "USA 1994-2016 "Integrated Circuits, "CMOS, "DRAM, "Semiconductor device fabrication [250][251]
Pouya Hashemi 287  "USA 2013-2018 Semiconductor, VLSI, CMOS logic and memory, cognitive [252][253]
"Adam Heller 278  "Romania 1968-2018 "Solar cells, "Glucose meters, "Lasers [254][255][256]
Jeffrey W. Sleight 278  "USA 1998-2018 "Integrated Circuits, "CMOS, "Semiconductor device fabrication [257][258]
Brent Keeth 274  "USA 1994-2018 "Integrated Circuits, "CMOS, "DRAM [259][260]
Michael A. Rothman 268  "USA 2001-2018 Computer software and firmware [261][262]
Hartley Owen 267  "USA 1976-2010 "Fluid catalytic cracking [263][264]
Esmael H. Dinan 264  "USA 2006-2018 Communication Networks [265][266]
Sarbajit K. Rakshit 260  "India 2013-2018 Various [267][268]
Yoshihiro Kikuchi 257  "Japan 1994-2018 "Video processing [269][270]
Harry (Tom) Graef 252  "USA 1976-2018 Business machines, "automation [271][272]
Nobuyuki Taniguchi 245  "Japan 1979-2015 "Cameras [273][274]
Takeshi Chujoh 245  "Japan 1995-2018 "Video processing [275][276]
"Rajiv V. Joshi 245  "USA 1986-2018 "Electronics, "analytics [277][278]
"Bran Ferren 244  "USA 1986-2018 "Computers, "Consumer Electronics, Electro-"Optical Systems, "Medical, "User Interfaces, "Automotive, Vehicles & Transportation [279][280]
Johnny M. Shieh 241  "USA 1996-2018 Various [281][282]
Philip S. Yu 238  "USA 1982-2018 Various [283][284]
Thomas J. Kennedy III 227  "USA 1992-2017 "Sporting Goods, "Wind Turbines, "Biotechnology [285][286]
"Dorin Comaniciu 226  "USA 2003-2018 "Machine Intelligence, "Medical Imaging, "Image-Guided Surgery, "Computer Vision [287][288]
Imad Libbus 226  "USA 2007-2018 "Medical devices [289][290]
Gerald F. McBrearty 226  "USA 1997-2018 Various [291][292]
"Louis B. Rosenberg 225  "USA 1995-2018 "Augmented Reality, "Virtual Reality, "A.I., HCI [293][294]
Michael (S.) Tsirkin 224  "Israel 2012-2018 "Virtual Machines, "I/O Data Processing, "Computer Graphics, "Power Management, "Computer Memory, "Computer Networks, "Distributed Data Processing, "Fault Recovery, "Data Structures [295][296]
Assaf Natanzon 223  "Israel 2007-2018 Storage Systems, Data Protection [297][298]
Paul Ian Mackey 220  "Australia 2008-2016 "Printing, "Mechanical [299][300]
Zvi Or-Bach 215  "USA 1982-2018 Various [301][302]
Gregory McAvoy 208  "Australia 2003-2017 "Printing, "MEMS [303][304]
Sandeep R. Patil 208  "India 2008-2018 Various [305][306]
Sebastian T. Ventrone 207  "USA 1989-2018 Semiconductor, Logic, Architecture [307][308]
Hiroshi (You) Yoshioka 205  "Japan 1997-2015 "Cameras [309][310]
Patrick B. Usoro 205  "USA 1999-2016 Transmissions, Hybrid Powertrains, Vehicle Thermal Management [311][312]
Seung H. Kang 203  "USA 2002-2018 Semiconductor device technologies, MRAM, spintronics, and memory circuit design [313][314]
"Mukta G. Farooq 202  "USA 1993-2018 Semiconductor materials and structures, packaging technology, and 3-dimensional silicon integration [315][316]

This table was current as of May 15, 2018. The columns are defined as follows:

Contents

Threshold for inclusion[edit]

As the average number of patents per inventor is around 3, some sources define prolific inventors as five times above the average (in terms of patents), leading to a threshold of 15 patents.[317] However, this table currently has an arbitrary cut-off limit for inclusion of 200 patents. This is purely for practical reasons – there are tens of thousands of inventors with more than 15 patents. The threshold of 200 patents means that some famous prolific inventors such as "Nikola Tesla are not included in this list, as Tesla had 111 patents.[318][319]

Significance of inventions[edit]

This table is a sortable list of the most prolific inventors as measured by utility patents granted. It does not include other types of invention, such as inventions that were never applied for nor granted, for which there is no known source. Nor does the table attempt to measure the significance of an inventor and their inventions. The significance of inventions is often not apparent until many decades after the invention has been made. For recent inventors, it is not yet possible to determine their place in history.

The common symbol for inventiveness, the light bulb, is an example. The first "incandescent light bulb was invented by British "chemist "Sir Humphry Davy in 1802. Many subsequent inventors improved Davy's invention prior to the successful commercialization of electric lighting by "Thomas Edison in 1880, 78 years later. Electric lighting continued to be developed. Edison's carbon filament light bulb was made obsolete by the tungsten filament light bulb, invented in 1904 by "Sándor Just and "Franjo Hanaman. It is this that forms the popular conception of a light bulb, though there are other major forms of lighting. The principle of "fluorescent lights was known since 1845, and various inventors, including Edison and "Nikola Tesla worked on them without commercial success. Various improvements were made by many other inventors, until "General Electric introduced "fluorescent lumiline lamps" commercially in 1938, first available to the public at the "1939 World's Fair. "LED lamps also have a long history, with the first "light-emitting diode (LED) invented in 1927 by "Oleg Losev. LEDs were initially of low brightness, and have been used as indicator lamps and "seven-segment displays since 1968. It wasn't until the development of high efficiency blue LEDs by "Shuji Nakamura in the 1980s that white LEDs for lighting applications became practical. Although higher cost than incandescent light bulbs, LEDs have higher efficiency and longer life and may finally displace light bulbs in general lighting applications. In each case, more than 50 years passed between the initial invention and commercial success in general lighting applications.

Various published lists[edit]

Rankings of prolific inventors have been published at various times. However, until the patent records were digitized, these lists were very tedious to prepare, as many thousands of patent records had to be checked manually. Even after digitization, it is still not a simple process. While the "USPTO keeps statistics for annual rankings of inventions assigned to companies, it no longer publishes rankings of individual inventors. The last such list was published by the USPTO in 1998.[16] Also, patents predating 1976 have not yet been digitized in the USPTO records. This means that patents before 1976 will not be included in a USPTO search by inventor name, and the number of patents granted before 1976 must be added to current searches.

Popular Science (1936)[edit]

In January 1936, "Popular Science published a list of the "most prolific living inventors to be found in America today".[42]

Rank Inventor U.S. Patents
1 John F. O'Connor 949
2 "Elihu Thomson 696
3 "Carleton Ellis 648
4 Henry A. Wise Wood 434
5 "John Hays Hammond Jr. 360
6 Clyde C. Farmer 344
7 Ethan I. Dodds 321
8 Edward Weston 309

Thomas Edison was not included in the list, as he died in 1931, five years earlier.

Time Magazine (2000)[edit]

On December 4, 2000, "Time Magazine published a list of the "top five inventors".[2]

Rank Inventor U.S. Patents
1 "Thomas Edison 1,093
2 "Melvin De Groote 925
3 Francis H. Richards 894
4 "Elihu Thomson 696
5 "Jerome Lemelson 554

This list only included U.S. inventors, so omitted Canadian inventor George Albert Lyon, with 993 U.S. patents at the time of publication, Japanese inventor "Shunpei Yamazaki, with 745 U.S. patents, and "Béla Barényi, with 595 German patents. Also omitted were John F. O'Connor with 949 U.S. patents, and "Carleton Ellis, with 753 U.S. patents at the time of publication.

USA Today (2005)[edit]

On December 13, 2005 "USA Today published a list of "the top 10 living U.S. patent holders":[7]

Rank Inventor U.S. Patents
1 "Shunpei Yamazaki 1,432
2 "Donald Weder 1,322
3 "Kia Silverbrook 810
4 George Spector 723
5 Gurtej Sandhu 576
6 Warren Farnworth 547
7 Salman Akram 527
8 "Mark Gardner 512
9 Heinz Focke 508
10 Joseph Straeter 477

This research was performed by ipIQ of Chicago (now "The Patent Board"[320]) and 1790 Analytics[321] of New Jersey. This list only considered living inventors, and thus did not include such prolific inventors as Thomas Edison, Melvin De Groote, and Elihu Thomson. This list included design patents, which are not patents for inventions.

Condé Nast Portfolio (2007)[edit]

On October 15, 2007 "Condé Nast "Portfolio Magazine published a list[8] of "the world's most prolific inventors alive":

Rank Inventor U.S. Patents
1 "Shunpei Yamazaki 1,811
2 "Kia Silverbrook 1,646
3 "Donald Weder 1,350
4 George Spector 722
5 Gurtej Sandhu 674
6 Leonard Forbes 671
7 Warren Farnworth 635
8 Salman Akram 612
9 "Mark Gardner 515
10 Joseph Straeter 485

This research was performed by The Patent Board,[320] a Chicago patent research and advisory firm. As with the USA Today list, the Portfolio list only considered living inventors, and thus did not include such prolific inventors as Thomas Edison. This list also included design patents, which are not patents for inventions.

Business Insider (2011)[edit]

On 6 May 2011 "Business Insider published an article titled: "The Ten Greatest Inventors In The Modern Era"[4] containing the following list:

Rank Inventor U.S. Patents
1 "Kia Silverbrook 3,847
2 "Shunpei Yamazaki 2,061
3 "Thomas Edison 1,084
4 George Albert Lyon 993
5 Paul Lapstun 969
6 "Donald Weder 951
7 John F. O'Connor 949
8 Leonard Forbes 948
9 "Melvin De Groote 925
10 Francis H. Richards 894

This list included living and dead inventors, and only included granted utility patents (patents for inventions).

Strutpatent.com (2012)[edit]

Strutpatent.com publishes a list of the "Top 10 Inventors" [9] listing inventors ranked by US patents (of all types) issued since 1990:

Rank Inventor U.S. Patents
1 "Kia Silverbrook 4,279
2 "Shunpei Yamazaki 1,664
3 "Donald Weder 1,310
4 Paul Lapstun 1,098
5 Leonard Forbes 959
6 Gurtej Sandhu 728
7 Warren Farnworth 685
8 Salman Akram 653
9 "Jay Walker 644
10 Chang-Hwan Hwang 634

This list included only patents granted since 1990, and includes design patents as well as utility patents.

Annual lists (2007–2012)[edit]

Strutpatent.com publishes weekly, monthly, and annual lists of the top ten categories, inventors and assignees of US patents since 2007. These lists include all patent types, not just patents for inventions (utility patents).

The top ten inventors of US patents for 2007:[10]

Rank Inventor U.S. Patents
1 "Kia Silverbrook 502
2 Audrey Goddard 232
3 William I. Wood 232
4 Austin L. Gurney 225
5 Chang-Hwan Hwang 203
6 Paul J. Godowski 193
7 "Shunpei Yamazaki 139
8 Paul Lapstun 129
9 Leonard Forbes 120
10 Victoria Smith 112

The top ten inventors of US patents for 2008:[11]

Rank Inventor U.S. Patents
1 "Kia Silverbrook 576
2 Chang-Hwan Hwang 198
3 Audrey Goddard 168
4 Austin L. Gurney 167
5 William I. Wood 166
6 Paul J. Godowski 153
7 "Shunpei Yamazaki 143
8 Paul Lapstun 137
9 Chang-Soo Lee 129
10 Victoria Smith 122

The top ten inventors of US patents for 2009:[12]

Rank Inventor U.S. Patents
1 "Kia Silverbrook 444
2 "Shunpei Yamazaki 137
3 Paul Lapstun 113
4 Bartley K. Andre 92
5 Daniele De Iuliis 92
6 "Jonathan Ive 92
7 Matthew Rohrbach 92
8 Richard P. Howarth 91
9 Duncan Robert Kerr 91
10 Leonard Forbes 91

The top ten inventors of US patents for 2010:[13]

Rank Inventor U.S. Patents
1 "Kia Silverbrook 709
2 Paul Lapstun 191
3 "Shunpei Yamazaki 162
4 Simon Walmsley 115
5 Bartley K. Andre 114
6 Matthew Rohrbach 109
7 Richard P. Howarth 108
8 "Jonathan Ive 108
9 Duncan Robert Kerr 108
10 Daniel J. Coster 106

The top ten inventors of US patents for 2011:[14]

Rank Inventor U.S. Patents
1 "Kia Silverbrook 754
2 Paul Lapstun 268
3 "Shunpei Yamazaki 163
4 Hideo Ando 162
5 You Yoshioka 153
6 Scott H. Wittkopp 126
7 James M. Hart 125
8 Edward Jung 112
9 Simon Walmsley 112
10 "Jay S. Walker 99

The top ten inventors of US patents for 2012:[15]

Rank Inventor U.S. Patents
1 "Kia Silverbrook 220
2 Edward Jung 180
3 "Shunpei Yamazaki 172
4 "Lowell Wood 169
5 Roderick Hyde 140
6 Bin Li 124
7 Royce Levien 122
8 Mark Malamud 119
9 Shunpei Yamazaki 118
10 John Rinaldo 117

This table omitted Rick Allen Hamilton II. The USPTO database shows Hamilton was an inventor or co-inventor of 128 US patents granted in 2012,[322] which would place Hamilton at 6th rank for 2012.

Differences between lists[edit]

Differences in patent numbers between the various lists are due to several reasons:

See also[edit]

References[edit]

  1. ^ Thomas Alva Edison Biography at Rutgers University
  2. ^ a b c d e f g Man-Made Marvels Time Magazine, Dec 4, 2000
  3. ^ a b "List of Edison patents
  4. ^ a b c d e f g h i j k l The Ten Greatest Inventors In The Modern Era Business Insider, 6 May 2011
  5. ^ a b c The True Inventor Basson-Booyens website
  6. ^ US Patents of Shunpei Yamazaki
  7. ^ a b c d e f g h i j You really can find identities of top patent holders USA Today, Dec 13, 2005
  8. ^ a b c d e f g h i j Masters of invention Portfolio, October 15, 2007
  9. ^ a b c d e f g h i j Strutpatent list of the top 10 inventors since 1990
  10. ^ a b c d e f g h i List of the top ten US patent grantees for 2007 StrutPatent.com website
  11. ^ a b c d e f g h List of the top ten US patent grantees for 2008 StrutPatent.com website
  12. ^ a b c d e List of the top ten US patent grantees for 2009 StrutPatent.com website
  13. ^ a b c d e List of the top ten US patent grantees for 2010 StrutPatent.com website
  14. ^ a b c d e f g h List of the top ten US patent grantees for 2011 StrutPatent.com website
  15. ^ a b c d e f g h i List of the top ten US patent grantees for 2012 StrutPatent.com website
  16. ^ a b c d e f g h i USPTO publication: Prolific Inventors Receiving Utility Patents 1988-1997
  17. ^ US Patents of Kia Silverbrook
  18. ^ Worldwide Patents of Kia Silverbrook
  19. ^ US Patents of Lowell L. Wood, Jr.
  20. ^ Worldwide Patents of Lowell L. Wood, Jr.
  21. ^ US Patents of Roderick A. Hyde
  22. ^ Worldwide Patents of Roderick A. Hyde
  23. ^ US Patents of Kangguo Cheng
  24. ^ Worldwide Patents of Kangguo Cheng
  25. ^ US Patents of Jun Koyama
  26. ^ Worldwide Patents of Jun Koyama
  27. ^ US Patents of Gurtej Sandhu
  28. ^ Worldwide Patents of Gurtej Sandhu
  29. ^ US Patents of Paul Lapstun
  30. ^ Worldwide Patents of Paul Lapstun
  31. ^ US Patents of Leonard Forbes
  32. ^ Worldwide Patents of Leonard Forbes
  33. ^ Edison's Foreign Patents
  34. ^ The Complete Thomas Alva Edison U.S. Patent Collection
  35. ^ US Patents of Clarence T. Tegreene
  36. ^ Worldwide Patents of Clarence T. Tegreene
  37. ^ US Patents of Edward K. Y. Jung
  38. ^ Worldwide Patents of Edward K. Y. Jung
  39. ^ US Patents of Donald E. Weder
  40. ^ Worldwide Patents of Donald E. Weder
  41. ^ Archived Boliven Patents by George Albert Lyon(s)
  42. ^ US Patents of Jay S. Walker
  43. ^ Worldwide Patents of Jay S. Walker
  44. ^ US Patents of Shou-Shan Fan
  45. ^ Worldwide Patents of Shou-Shan Fan
  46. ^ US Patents of Michael J. Sullivan
  47. ^ Worldwide Patents of Michael J. Sullivan
  48. ^ US Patents of Rick Allen Hamilton II
  49. ^ Worldwide Patents of Rick Allen Hamilton II
  50. ^ US Patents of Ahmadreza Rofougaran
  51. ^ Worldwide Patents of Ahmadreza Rofougaran
  52. ^ US Patents of Nathan Myhrvold
  53. ^ Worldwide Patents of Nathan Myhrvold
  54. ^ US Patents of Jordin T. Kare
  55. ^ Worldwide Patents of Jordin T. Kare
  56. ^ US Patents of Warren Farnworth
  57. ^ Worldwide Patents of Warren Farnworth
  58. ^ US Patents of William H. Eby
  59. ^ Worldwide Patents of William H. Eby
  60. ^ US Patents of Mark Malamud
  61. ^ Worldwide Patents of Mark Malamud
  62. ^ US Patents of Robert W. Lord
  63. ^ Worldwide Patents of Robert W. Lord
  64. ^ US Patents of Royce A. Levien
  65. ^ Worldwide Patents of Royce A. Levien
  66. ^ B. Zorina Khan, The Democratization of Invention: Patents and Copyrights in American Economic Development, 1790-1920 (Cambridge University Press, 2005) pp209-210
  67. ^ US Patents of Salman Akram
  68. ^ Worldwide Patents of Salman Akram
  69. ^ US Patents of Muriel Y. Ishikawa
  70. ^ Worldwide Patents of Muriel Y. Ishikawa
  71. ^ Bio of Muriel Y. Ishikawa
  72. ^ US Patents of Jeyhan Karaoguz
  73. ^ Worldwide Patents of Jeyhan Karaoguz
  74. ^ US Patents of Hideo Ando
  75. ^ Worldwide Patents of Hideo Ando
  76. ^ US Patents of George Spector
  77. ^ Worldwide Patents of George Spector
  78. ^ US Patents of Austin L. Gurney
  79. ^ Worldwide Patents of Austin L. Gurney
  80. ^ US Patents of Tetsujiro Kondo
  81. ^ Worldwide Patents of Tetsujiro Kondo
  82. ^ US Patents of William I. Wood
  83. ^ Worldwide Patents of William I. Wood
  84. ^ US Patents of Simon R. Walmsley
  85. ^ Worldwide Patents of Simon R. Walmsley
  86. ^ US Patents of Ali Khakifirooz
  87. ^ Worldwide Patents of Ali Khakifirooz
  88. ^ US Patents of Audrey D. Goddard
  89. ^ Worldwide Patents of Audrey D. Goddard
  90. ^ US Patents of Bruce B. Doris
  91. ^ Worldwide Patents of Bruce B. Doris
  92. ^ Worldwide Patents of Jerome Lemelson
  93. ^ The Lemelson Center for the Study of Invention & Innovation web site, Jerome Lemelson's Patents.
  94. ^ US Patents of Tadahiro Ohmi
  95. ^ Worldwide Patents of Tadahiro Ohmi
  96. ^ US Patents of Kie Y Ahn
  97. ^ Worldwide Patents of Kie Y Ahn
  98. ^ US Patents of Edward J. Nowak
  99. ^ Worldwide Patents of Edward J. Nowak
  100. ^ Worldwide Patents of Béla Barényi
  101. ^ German Patents of Béla Barényi
  102. ^ US Patents of Paul J. Godowski
  103. ^ Worldwide Patents of Paul J. Godowski
  104. ^ US Patents of Artur Fischer
  105. ^ Worldwide Patents of Artur Fischer
  106. ^ Reference to German patents of Artur Fischer
  107. ^ US Patents of Eric C. Leuthardt
  108. ^ Worldwide Patents of Eric C. Leuthardt
  109. ^ US Patents of John M. Santosuosso
  110. ^ Worldwide Patents of John M. Santosuosso
  111. ^ US Patents of Louis L. Hsu
  112. ^ Worldwide Patents of Louis L. Hsu
  113. ^ Worldwide Patents of Edwin H. Land
  114. ^ Victor K. McElheny, Insisting on the impossible: The Life of Edwin Land (Perseus Books, 1998)
  115. ^ Worldwide Patents of Henri Dreyfus
  116. ^ Camille and Henry Dreyfus Foundation
  117. ^ US Patents of Jeffrey P. Gambino
  118. ^ Worldwide Patents of Jeffrey P. Gambino
  119. ^ Worldwide Patents of Clyde C. Farmer
  120. ^ a b Archived Boliven.com website
  121. ^ US Patents of Heinz Focke
  122. ^ Worldwide Patents of Heinz Focke
  123. ^ US Patents of Mark I. Gardner
  124. ^ Worldwide Patents of Mark I. Gardner
  125. ^ US Patents of Ravi K. Arimilli
  126. ^ Worldwide Patents of Ravi K. Arimilli
  127. ^ Worldwide Patents of Louis H. Morin
  128. ^ US Patents of Tobin A. King
  129. ^ Worldwide Patents of Tobin A. King
  130. ^ US Patents of Victoria Y. H. Wood
  131. ^ Worldwide Patents of Victoria Y. H. Wood
  132. ^ US Patents of Devendra K. Sadana
  133. ^ Worldwide Patents of Devendra K. Sadana
  134. ^ US Patents of Jack A. Mandelman
  135. ^ Worldwide Patents of Jack A. Mandelman
  136. ^ US Patents of James M. Hart
  137. ^ Worldwide Patents of James M. Hart
  138. ^ US Patents of Clifford A. Pickover
  139. ^ Worldwide Patents of Clifford A. Pickover
  140. ^ US Patents of Ronald S. Cok
  141. ^ Worldwide Patents of Ronald S. Cok
  142. ^ US Patents of Anthony K. Stamper
  143. ^ Worldwide Patents of Anthony K. Stamper
  144. ^ US Patents of Chih-Chao Yang
  145. ^ Worldwide Patents of Chih-Chao Yang
  146. ^ US Patents of Robert S. Langer
  147. ^ Worldwide Patents of Robert S. Langer
  148. ^ US Patents of Akira Nakazawa
  149. ^ Worldwide Patents of Akira Nakazawa
  150. ^ US Patents of Eberhard Ammermann
  151. ^ Worldwide Patents of Eberhard Ammermann
  152. ^ Full patent listing for Thomas E. Murray
  153. ^ Thomas E. Murray web site
  154. ^ US Patents of Hongyong Zhang
  155. ^ Worldwide Patents of Hongyong Zhang
  156. ^ US Patents of Gregory J. Boss
  157. ^ Worldwide Patents of Gregory J. Boss
  158. ^ US Patents of Scott H. Wittkopp
  159. ^ Worldwide Patents of Scott H. Wittkopp
  160. ^ US Patents of Kai-Li Jiang
  161. ^ Worldwide Patents of Kai-Li Jiang
  162. ^ Worldwide Patents of John Hays Hammond, Jr.
  163. ^ The Infography of John Hays Hammond, Jr.
  164. ^ US Patents of Hossein Eslambolchi
  165. ^ Worldwide Patents of Hossein Eslambolchi
  166. ^ US Patents of Wilhelm Brandes
  167. ^ Worldwide Patents of Wilhelm Brandes
  168. ^ US Patents of John L. Melanson
  169. ^ Worldwide Patents of John L. Melanson
  170. ^ US Patents of Cary L. Bates
  171. ^ Worldwide Patents of Cary L. Bates
  172. ^ Bio of Cary L. Bates
  173. ^ US Patents of Stanford R. Ovshinsky
  174. ^ Worldwide Patents of Stanford R. Ovshinsky
  175. ^ US Patents of Stanford Ovshinsky
  176. ^ US Patents of Xuemin (Sherman) Chen
  177. ^ Worldwide Patents of Xuemin (Sherman) Chen
  178. ^ US Patents of Xuemin Chen a
  179. ^ US Patents of Xuemin Chen b
  180. ^ US Patents of Xuemin Chen c
  181. ^ US Patents of Brian M. O'Connell
  182. ^ Worldwide Patents of Brian M. O'Connell
  183. ^ US Patents of Josef Theurer
  184. ^ Worldwide Patents of Josef Theurer
  185. ^ US Patents of Vincent J. Zimmer
  186. ^ Worldwide Patents of Vincent J. Zimmer
  187. ^ US Patents of Lisa Seacat DeLuca
  188. ^ Worldwide Patents of Lisa Seacat DeLuca
  189. ^ US Patents of David V. Horak
  190. ^ Worldwide Patents of David V. Horak
  191. ^ US Patents of George P. Liang
  192. ^ Worldwide Patents of George P. Liang
  193. ^ US Patents of Hans-Joachim Santel
  194. ^ Worldwide Patents of Hans-Joachim Santel
  195. ^ US Patents of Gisela Lorenz
  196. ^ Worldwide Patents of Gisela Lorenz
  197. ^ US Patents of Wael W. Diab
  198. ^ Worldwide Patents of Wael W. Diab
  199. ^ US Patents of Paul W. Dent
  200. ^ Worldwide Patents of Paul W. Dent
  201. ^ US Patents of Garry R. Jackson
  202. ^ Worldwide Patents of Garry R. Jackson
  203. ^ US Patents of Brent A. Anderson
  204. ^ Worldwide Patents of Brent A. Anderson
  205. ^ George Westinghouse article at ideafinder.com
  206. ^ Hubert, P. G. (1894). Men of achievement. Inventors. New York: Charles Scribner's Sons. Page 296+
  207. ^ George Westinghouse article in Encyclopædia Britannica
  208. ^ US Patents of Robert R. Schmidt
  209. ^ Worldwide Patents of Robert R. Schmidt
  210. ^ US Patents of Mark W. Kroll
  211. ^ Worldwide Patents of Mark W. Kroll
  212. ^ Bio of Mark Kroll
  213. ^ US Patents of Jeffrey E. Stahmann
  214. ^ Worldwide Patents of Jeffrey E. Stahmann
  215. ^ US Patents of Norman M. Berry
  216. ^ Worldwide Patents of Norman M. Berry
  217. ^ US Patents of William Daniel Hillis
  218. ^ Worldwide Patents of William Daniel Hillis
  219. ^ US Patents of Carl J. Radens
  220. ^ Worldwide Patents of Carl J. Radens
  221. ^ US Patents of Ruilong Xie
  222. ^ Worldwide Patents of Ruilong Xie
  223. ^ US Patents of Ajith K. Kumar
  224. ^ Worldwide Patents of Ajith K. Kumar
  225. ^ US Patents of Keith R. Walker
  226. ^ Worldwide Patents of Keith R. Walker
  227. ^ US Patents of Steven L. Teig
  228. ^ Worldwide Patents of Steven L. Teig
  229. ^ US Patents of Liang Liu
  230. ^ Worldwide Patents of Liang Liu
  231. ^ US Patents of Victoria Smith
  232. ^ Worldwide Patents of Victoria Smith
  233. ^ US Patents of Hanson S. Gifford III
  234. ^ Worldwide Patents of Hanson S. Gifford III
  235. ^ US Patents of Lawrence A. Clevenger
  236. ^ Worldwide Patents of Lawrence A. Clevenger
  237. ^ Robert G. LeTourneau: Dean of Earthmoving
  238. ^ Texas Co-op Power: He Was a Mover and a Shaker
  239. ^ US Patents of Bengt Lindoff
  240. ^ Worldwide Patents of Bengt Lindoff
  241. ^ US Patents of Victor S. Moore
  242. ^ Worldwide Patents of Victor S. Moore
  243. ^ US Patents of Kulvir S. Bhogal
  244. ^ Worldwide Patents of Kulvir S. Bhogal
  245. ^ US Patents of Daniel J. Winarski
  246. ^ Worldwide Patents of Daniel J. Winarski
  247. ^ US Patents of Dean L. Kamen
  248. ^ Worldwide Patents of Dean L. Kamen
  249. ^ US Patents of William R. Tonti
  250. ^ Worldwide Patents of William R. Tonti
  251. ^ US Patents of Pouya Hashemi
  252. ^ Worldwide Patents of Pouya Hashemi
  253. ^ US Patents of Adam Heller
  254. ^ Worldwide Patents of Adam Heller
  255. ^ The 12 US Patents of Adam Heller prior to 1976
  256. ^ US Patents of Jeffrey W. Sleight
  257. ^ Worldwide Patents of Jeffrey W. Sleight
  258. ^ US Patents of Brent Keeth
  259. ^ Worldwide Patents of Brent Keeth
  260. ^ US Patents of Michael A. Rothman
  261. ^ Worldwide Patents of Michael A. Rothman
  262. ^ US Patents of Hartley Owen
  263. ^ Worldwide Patents of Hartley Owen
  264. ^ US Patents of Esmael H. Dinan
  265. ^ Worldwide Patents of Esmael H. Dinan
  266. ^ US Patents of Sarbajit K. Rakshit
  267. ^ Worldwide Patents of Sarbajit K. Rakshit
  268. ^ US Patents of Yoshihiro Kikuchi
  269. ^ Worldwide Patents of Yoshihiro Kikuchi
  270. ^ US Patents of Harry (Tom) Graef
  271. ^ Worldwide Patents of Harry (Tom) Graef
  272. ^ US Patents of Nobuyuki Taniguchi
  273. ^ Worldwide Patents of Nobuyuki Taniguchi
  274. ^ US Patents of Takeshi Chujoh
  275. ^ Worldwide Patents of Takeshi Chujoh
  276. ^ US Patents of Rajiv V. Joshi
  277. ^ Worldwide Patents of Rajiv V. Joshi
  278. ^ US Patents of Bran Ferren
  279. ^ Worldwide Patents of Bran Ferren
  280. ^ US Patents of Johnny M. Shieh
  281. ^ Worldwide Patents of Johnny M. Shieh
  282. ^ US Patents of Philip S. Yu
  283. ^ Worldwide Patents of Philip S. Yu
  284. ^ US Patents of Thomas J. Kennedy III
  285. ^ Worldwide Patents of Thomas J. Kennedy III
  286. ^ US Patents of Dorin Comaniciu
  287. ^ Worldwide Patents of Dorin Comaniciu
  288. ^ US Patents of Imad Libbus
  289. ^ Worldwide Patents of Imad Libbus
  290. ^ US Patents of Gerald F. McBrearty
  291. ^ Worldwide Patents of Gerald F. McBrearty
  292. ^ US Patents of Louis B. Rosenberg
  293. ^ Worldwide Patents of Louis B. Rosenberg
  294. ^ US Patents of Michael (S.) Tsirkin
  295. ^ Worldwide Patents of Michael (S.) Tsirkin
  296. ^ US Patents of Assaf Natanzon
  297. ^ Worldwide Patents of Assaf Natanzon
  298. ^ US Patents of Paul Ian Mackey
  299. ^ Worldwide Patents of Paul Ian Mackey
  300. ^ US Patents of Zvi Or-Bach
  301. ^ Worldwide Patents of Zvi Or-Bach
  302. ^ US Patents of Gregory McAvoy
  303. ^ Worldwide Patents of Gregory McAvoy
  304. ^ US Patents of Sandeep R. Patil
  305. ^ Worldwide Patents of Sandeep R. Patil
  306. ^ US Patents of Sebastian T. Ventrone
  307. ^ Worldwide Patents of Sebastian T. Ventrone
  308. ^ US Patents of Hiroshi (You) Yoshioka
  309. ^ Worldwide Patents of Hiroshi (You) Yoshioka
  310. ^ US Patents of Patrick B. Usoro
  311. ^ Worldwide Patents of Patrick B. Usoro
  312. ^ US Patents of Seung H. Kang
  313. ^ Worldwide Patents of Seung H. Kang
  314. ^ US Patents of Mukta G. Farooq
  315. ^ Worldwide Patents of Mukta G. Farooq
  316. ^ Prolific Inventors: Who are They and Where do They Locate? International Centre for Economic Research Working Paper No. 14/2010
  317. ^ "List of Nikola Tesla patents
  318. ^ Jim Bieberich's Complete Nikola Tesla U.S. Patent Collection
  319. ^ a b The Patent Board website
  320. ^ 1790 Analytics website
  321. ^ USPTO Utility Patent Search for Rick Allen Hamilton II for 2012
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