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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 5091  "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 4744  "Australia 1994-2017 "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. 1686  "USA 1977-2018 "Mosquito laser, "Nuclear weapons [19][20][15]
Roderick A. Hyde 1540  "USA 2001-2018 Various [21][22][15]
Kangguo Cheng 1317  "USA 2004-2018 "Semiconductor device fabrication, "Semiconductor memory, "Semiconductor device [23][24]
Jun Koyama 1306  "Japan 1991-2018 "Thin film transistors, "Liquid crystal displays, "OLED [25][26]
"Gurtej Sandhu 1288  "India 1991-2018 "Thin film processes and materials, "VLSI, "Semiconductor device fabrication [27][28][7][8][9][16]
Paul Lapstun 1286  "Australia 2000-2018 "Printing, "Digital paper, "Internet, "Electronics, "CGI, "VLSI [29][30][4][9][10][11][12][13][14]
Leonard Forbes 1099  "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 1049  "USA 2000-2018 Various [35][36]
Edward K. Y. Jung 1005  "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 938  "USA 1998-2018 "Gaming machines [43][44][9][14]
"Melvin De Groote 925  "USA 1895(b)-1963(d) "Chemical de-emulsifiers [2][4]
Shou-Shan Fan 924  "China 2006-2018 Carbon nanotubes and applications of carbon nanotubes [45][46]
Francis H. Richards 894  "USA 1850(b)-19??(d) "Mechanical, "automation [2][4]
Michael J. Sullivan 864  "USA 1977-2018 "Golf balls [47][48]
Rick Allen Hamilton II 857  "USA 1999-2018 Various [49][50][15]
Ahmadreza Rofougaran 828  "USA 2002-2018 "Radio Frequency "Integrated Circuits [51][52]
"Nathan Myhrvold 780  "USA 1994-2018 Various [53][54]
Warren Farnworth 772  "USA 1990-2017 "Semiconductor packaging [55][56][7][8][9]
"Jordin T. Kare 757  "USA 1992-2018 Various [57][58]
William H. Eby 754  "USA 1994-2018 "Transgenic soybeans [59][60]
"Carleton Ellis 753  "USA 1876(b)-1941(d) "Margarine, "Polyester, "Anti-knock gasoline, "Paint stripper [42][61]
"Mark Malamud 753  "USA 1997-2018 Various [62][63][15]
Robert W. Lord 743  "USA 2003-2018 Various [64][65]
"Royce A. Levien 742  "USA 1997-2018 Various [66][67][15]
Salman Akram 740  "USA 1995-2017 "Semiconductor packaging [68][69][7][8][9]
Jeyhan Karaoguz 739  "USA 1996-2018 "Wireless communications, "Computer networks [70][71]
Hideo Ando 729  "Japan 1983-2017 "Optical recording [72][73][14]
Muriel Y. Ishikawa 725  "USA 2002-2018 Various [74][75][76]
George Spector 722  "USA 1976-1998 "Gadgets, "Toys [77][78][7][8]
Austin L. Gurney 710  "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]
Audrey D. Goddard 623  "USA 1997-2017 "Proteins, "Antibodies [87][88][10][11]
Ali Khakifirooz 623  "USA 2011-2018 "Integrated Circuits, "CMOS, "Semiconductor device fabrication [89][90]
"Jerome Lemelson 606  "USA 1923(b)-1997(d) "Toys, "Industrial robots, "Cordless telephones, "Fax machines, "Videocassette recorders [91][2][16][92]
Bruce B. Doris 601  "USA 1995-2018 "Integrated Circuits, "CMOS, "DRAM, "Semiconductor device fabrication [93][94]
"Béla Barényi 595  "Austria 1907(b)-1997(d) "Passive safety in "automobiles [95][96]
Kie Y Ahn 595  "USA 1976-2017 "Thin film processes and materials, "VLSI, "Semiconductor device fabrication [97][98]
Tadahiro Ohmi 595  "Japan 1981-2018 "Thin film processes and materials, "Semiconductor device fabrication [99][100]
Edward J. Nowak 590  "USA 1979-2018 "Semiconductor device fabrication, "Semiconductor memory, "Semiconductor device [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 563  "USA 2006-2018 "Medical devices [108][109]
Louis L. Hsu 551  "USA 1988-2016 Various [110][111]
"Edwin H. Land 535  "USA 1909(b)-1991(d) "Instant photography, "Polarizing film [112][113]
John M. Santosuosso 535  "USA 2001-2018 Various [114][115]
"Henri Dreyfus 524   "Switzerland 1882(b)-1944(d) "Polymers, "Synthetic fibers, "Dyes [116][117]
Clyde C. Farmer 513  "USA 18??(b)-19??(d) "Railway air brakes [118][42][119]
Jeffrey P. Gambino 513  "USA 1992-2018 "MEMS, "CMOS, "BiCMOS, "DRAM, "Image Sensors, "RF, "Biosensors, "3D Integrated Circuits [120][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][119]
Tobin A. King 500  "Australia 2000-2017 "Printing, "Digital paper, "Mechanical [129][130]
Victoria Y. H. Wood 482  "USA 2009-2018 Various [131][132]
Jack A. Mandelman 481  "USA 1987-2014 Various [133][134]
James M. Hart 477  "USA 1988-2018 "Motor vehicle transmission [135][136]
"Ronald S. Cok 460  "USA 1986-2018 "OLED displays; image processing [137][138]
Devendra K. Sadana 457  "India 1983-2018 "Solar cells, "OLED, "Integrated Circuits, "CMOS, "DRAM, "LEDs [139][140]
Akira Nakazawa 454  "Australia 1980-2018 "Printing, "Mechanical [141][142]
Eberhard Ammermann 451  "Germany 1979-2015 "Fungicides [143][144][16]
"Robert S. Langer 451  "USA 1983-2018 "Biotechnology, "Drug delivery, "Tissue engineering [145][146]
Anthony K. Stamper 451  "USA 1998-2018 "MEMS, "CMOS, "BiCMOS, "Silicon-germanium [147][148]
"Thomas E. Murray 449  "USA 1860(b)-1929(d) "Electrical, "HVAC, "Wheels, "Metal working, "Light dimmer [149][150]
Hongyong Zhang 440  "Japan 1993-2016 "Thin film transistors, "Liquid crystal displays [151][152]
"Clifford A. Pickover 440  "USA 1992-2018 Various [153][154]
Chih-Chao Yang 439  "USA 2003-2018 "Integrated Circuits [155][156]
Scott H. Wittkopp 432  "USA 2001-2017 "Motor vehicle transmission [157][158][14]
Kai-Li Jiang 422  "China 2006-2018 Carbon nanotubes and applications of carbon nanotubes [159][160]
Gregory J. Boss 422  "USA 2008-2018 Various [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]
Cary L. Bates 404  "USA 1994-2017 "Programming tools, "DBX, "Memory debuggers [169][170][171]
"Stanford R. Ovshinsky 400  "USA 1922(b)-2012(d) "Batteries, "Solar cells, "Liquid crystal displays, "Hydrogen fuel cells, "Computer data storage [172][173][174]
"Josef Theurer 388  "Austria 1976-2016 "Railroad maintenance machines [175][176][16]
David V. Horak 384  "USA 1992-2017 Various [177][178]
Vincent J. Zimmer 383  "USA 1999-2018 Computer software and firmware [179][180]
Xuemin (Sherman) Chen 382  "USA 1997-2017 "Computer networks, "Integrated Circuits, "Signal Processing [181][182][183][184][185]
Brian M. O'Connell 381  "USA 2009-2018 Various [186][187]
George P. Liang 378  "China 1983-2017 "Gas turbine cooling [188][189]
Hans-Joachim Santel 377  "Germany 1986-2013 "Herbicides, "Pesticides, "Organic chemistry [190][191][16]
Gisela Lorenz 374  "Germany 1990-2015 "Fungicides, "Organic chemistry [192][193][16]
Wael W. Diab 372  "USA 2003-2017 "Computer networks [194][195]
Paul W. Dent 371  "USA 1984-2017 "Wireless communications [196][197]
Garry R. Jackson 367  "Australia 2001-2016 "Printing, "Mechanical [198][199]
Lisa Seacat DeLuca 367  "USA 2009-2018 Various [200][201]
"George Westinghouse 361  "USA 1846(b)-1914(d) "Electric power, "Electricity meter, "Railway air brake, "Steam engines [202][203][204]
Brent A. Anderson 356  "USA 2001-2018 "Semiconductor device fabrication, "Semiconductor memory, "Semiconductor device [205][206]
Robert R. Schmidt 350  "Germany 1971-2005 "Herbicides, "Fungicides, "Organic chemistry [207][208]
Mark W. Kroll 348  "USA 1987-2017 "Implantable medical devices [209][210][211]
Norman M. Berry 347  "Australia 2006-2016 "Printing, "Mechanical [212][213]
Jeffrey E. Stahmann 345  "USA 1994-2017 "Medical devices [214][215]
"William Daniel Hillis 343  "USA 1986-2017 Various [216][217]
Carl J. Radens 333  "USA 1994-2017 "Integrated Circuits, "CMOS, "DRAM, "Semiconductor device fabrication [218][219]
Ajith K. Kumar 321  "India 1984-2018 "Electric Power, Energy Management, Rail Transportation, "Mining [220][221]
Steven L. Teig 313  "USA 1995-2017 "Integrated Circuits [222][223]
Liang Liu 312  "China 2005-2017 Carbon nanotubes and applications of carbon nanotubes [224][225]
Victoria Smith 308  "USA 2006-2017 "Proteins, "Antibodies [226][227]
Keith R. Walker 307  "Saudi Arabia 2003-2018 Various [228][229]
Hanson S. Gifford III 301  "USA 1986-2018 "Medical devices [230][231]
"Robert G. LeTourneau 299  "USA 1888(b)-1969(d) "Earthworks (engineering), "Heavy Equipment, "Industrial Machinery [232][233]
Daniel J. Winarski 294  "USA 1982-2018 Various [234][235]
Kulvir S. Bhogal 294  "USA 2003-2018 Various [236][237]
Victor S. Moore 293  "USA 1982-2018 Various [238][239]
William R. Tonti 291  "USA 1994-2016 "Integrated Circuits, "CMOS, "DRAM, "Semiconductor device fabrication [240][241]
Bengt Lindoff 284  "Sweden 2000-2018 "Wireless communications [242][243]
"Dean L. Kamen 284  "USA 1979-2018 "Battery-powered electric vehicles, "Medical devices, "Stirling engines, "Water purification, "Wheelchairs [244][245]
Ruilong Xie 281  "USA 2013-2018 "Semiconductor device, "CMOS, "Semiconductor device fabrication [246][247]
Lawrence A. Clevenger 280  "USA 1996-2018 Semiconductor, Cognitive, Memory, Security, Analytics [248][249]
"Adam Heller 275  "Romania 1968-2018 "Solar cells, "Glucose meters, "Lasers [250][251][252]
Brent Keeth 273  "USA 1994-2017 "Integrated Circuits, "CMOS, "DRAM [253][254]
Jeffrey W. Sleight 271  "USA 1998-2018 "Integrated Circuits, "CMOS, "Semiconductor device fabrication [255][256]
Hartley Owen 267  "USA 1976-2010 "Fluid catalytic cracking [257][258]
Michael A. Rothman 264  "USA 2001-2018 Computer software and firmware [259][260]
Pouya Hashemi 262  "USA 2013-2018 Semiconductor, VLSI, CMOS logic and memory, cognitive [261][262]
Yoshihiro Kikuchi 257  "Japan 1994-2018 "Video processing [263][264]
Esmael H. Dinan 252  "USA 2006-2018 Communication Networks [265][266]
Harry (Tom) Graef 251  "USA 1976-2018 business machines, "automation [267][268]
Nobuyuki Taniguchi 245  "Japan 1979-2015 "Cameras [269][270]
Takeshi Chujoh 243  "Japan 1995-2018 "Video processing [271][272]
"Bran Ferren 243  "USA 1986-2018 "Computers, "Consumer Electronics, Electro-"Optical Systems, "Medical, "User Interfaces, "Automotive, Vehicles & Transportation [273][274]
"Rajiv V. Joshi 242  "USA 1986-2017 "Electronics, "analytics [275][276]
Johnny M. Shieh 240  "USA 1996-2018 Various [277][278]
Philip S. Yu 237  "USA 1982-2017 Various [279][280]
Sarbajit K. Rakshit 232  "India 2013-2018 Various [281][282]
Thomas J. Kennedy III 227  "USA 1992-2017 "Sporting Goods, "Wind Turbines, "Biotechnology [283][284]
"Dorin Comaniciu 224  "USA 2003-2018 "Machine Intelligence, "Medical Imaging, "Image-Guided Surgery, "Computer Vision [285][286]
Gerald F. McBrearty 224  "USA 1997-2018 Various [287][288]
"Louis B. Rosenberg 223  "USA 1995-2017 "Augmented Reality, "Virtual Reality, "A.I., HCI [289][290]
Paul Ian Mackey 220  "Australia 2008-2016 "Printing, "Mechanical [291][292]
Imad Libbus 220  "USA 2007-2018 "Medical devices [293][294]
Assaf Natanzon 210  "Israel 2007-2018 Storage Systems, Data Protection [295][296]
Gregory McAvoy 208  "Australia 2003-2017 "Printing, "MEMS [297][298]
Sebastian T. Ventrone 206  "USA 1989-2018 Semiconductor, Logic, Architecture [299][300]
Zvi Or-Bach 206  "USA 1982-2018 Various [301][302]
Hiroshi (You) Yoshioka 205  "Japan 1997-2015 "Cameras [303][304]
Patrick B. Usoro 205  "USA 1999-2016 Transmissions, Hybrid Powertrains, Vehicle Thermal Management [305][306]

This table was current as of February 13, 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.[307] 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.[308][309]

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"[310]) and 1790 Analytics[311] 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,[310] 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,[312] 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 Warren Farnworth
  55. ^ Worldwide Patents of Warren Farnworth
  56. ^ US Patents of Jordin T. Kare
  57. ^ Worldwide Patents of Jordin T. Kare
  58. ^ US Patents of William H. Eby
  59. ^ Worldwide Patents of William H. Eby
  60. ^ B. Zorina Khan, The Democratization of Invention: Patents and Copyrights in American Economic Development, 1790-1920 (Cambridge University Press, 2005) pp209-210
  61. ^ US Patents of Mark Malamud
  62. ^ Worldwide Patents of Mark Malamud
  63. ^ US Patents of Robert W. Lord
  64. ^ Worldwide Patents of Robert W. Lord
  65. ^ US Patents of Royce A. Levien
  66. ^ Worldwide Patents of Royce A. Levien
  67. ^ US Patents of Salman Akram
  68. ^ Worldwide Patents of Salman Akram
  69. ^ US Patents of Jeyhan Karaoguz
  70. ^ Worldwide Patents of Jeyhan Karaoguz
  71. ^ US Patents of Hideo Ando
  72. ^ Worldwide Patents of Hideo Ando
  73. ^ US Patents of Muriel Y. Ishikawa
  74. ^ Worldwide Patents of Muriel Y. Ishikawa
  75. ^ Bio of Muriel Y. Ishikawa
  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 Audrey D. Goddard
  87. ^ Worldwide Patents of Audrey D. Goddard
  88. ^ US Patents of Ali Khakifirooz
  89. ^ Worldwide Patents of Ali Khakifirooz
  90. ^ Worldwide Patents of Jerome Lemelson
  91. ^ The Lemelson Center for the Study of Invention & Innovation web site, Jerome Lemelson's Patents.
  92. ^ US Patents of Bruce B. Doris
  93. ^ Worldwide Patents of Bruce B. Doris
  94. ^ Worldwide Patents of Béla Barényi
  95. ^ German Patents of Béla Barényi
  96. ^ US Patents of Kie Y Ahn
  97. ^ Worldwide Patents of Kie Y Ahn
  98. ^ US Patents of Tadahiro Ohmi
  99. ^ Worldwide Patents of Tadahiro Ohmi
  100. ^ US Patents of Edward J. Nowak
  101. ^ Worldwide Patents of Edward J. Nowak
  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 Louis L. Hsu
  110. ^ Worldwide Patents of Louis L. Hsu
  111. ^ Worldwide Patents of Edwin H. Land
  112. ^ Victor K. McElheny, Insisting on the impossible: The Life of Edwin Land (Perseus Books, 1998)
  113. ^ US Patents of John M. Santosuosso
  114. ^ Worldwide Patents of John M. Santosuosso
  115. ^ Worldwide Patents of Henri Dreyfus
  116. ^ Camille and Henry Dreyfus Foundation
  117. ^ Worldwide Patents of Clyde C. Farmer
  118. ^ a b Archived Boliven.com website
  119. ^ US Patents of Jeffrey P. Gambino
  120. ^ Worldwide Patents of Jeffrey P. Gambino
  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 Jack A. Mandelman
  133. ^ Worldwide Patents of Jack A. Mandelman
  134. ^ US Patents of James M. Hart
  135. ^ Worldwide Patents of James M. Hart
  136. ^ US Patents of Ronald S. Cok
  137. ^ Worldwide Patents of Ronald S. Cok
  138. ^ US Patents of Devendra K. Sadana
  139. ^ Worldwide Patents of Devendra K. Sadana
  140. ^ US Patents of Akira Nakazawa
  141. ^ Worldwide Patents of Akira Nakazawa
  142. ^ US Patents of Eberhard Ammermann
  143. ^ Worldwide Patents of Eberhard Ammermann
  144. ^ US Patents of Robert S. Langer
  145. ^ Worldwide Patents of Robert S. Langer
  146. ^ US Patents of Anthony K. Stamper
  147. ^ Worldwide Patents of Anthony K. Stamper
  148. ^ Full patent listing for Thomas E. Murray
  149. ^ Thomas E. Murray web site
  150. ^ US Patents of Hongyong Zhang
  151. ^ Worldwide Patents of Hongyong Zhang
  152. ^ US Patents of Clifford A. Pickover
  153. ^ Worldwide Patents of Clifford A. Pickover
  154. ^ US Patents of Chih-Chao Yang
  155. ^ Worldwide Patents of Chih-Chao Yang
  156. ^ US Patents of Scott H. Wittkopp
  157. ^ Worldwide Patents of Scott H. Wittkopp
  158. ^ US Patents of Kai-Li Jiang
  159. ^ Worldwide Patents of Kai-Li Jiang
  160. ^ US Patents of Gregory J. Boss
  161. ^ Worldwide Patents of Gregory J. Boss
  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 Cary L. Bates
  169. ^ Worldwide Patents of Cary L. Bates
  170. ^ Bio of Cary L. Bates
  171. ^ US Patents of Stanford R. Ovshinsky
  172. ^ Worldwide Patents of Stanford R. Ovshinsky
  173. ^ US Patents of Stanford Ovshinsky
  174. ^ US Patents of Josef Theurer
  175. ^ Worldwide Patents of Josef Theurer
  176. ^ US Patents of David V. Horak
  177. ^ Worldwide Patents of David V. Horak
  178. ^ US Patents of Vincent J. Zimmer
  179. ^ Worldwide Patents of Vincent J. Zimmer
  180. ^ US Patents of Xuemin (Sherman) Chen
  181. ^ Worldwide Patents of Xuemin (Sherman) Chen
  182. ^ US Patents of Xuemin Chen a
  183. ^ US Patents of Xuemin Chen b
  184. ^ US Patents of Xuemin Chen c
  185. ^ US Patents of Brian M. O'Connell
  186. ^ Worldwide Patents of Brian M. O'Connell
  187. ^ US Patents of George P. Liang
  188. ^ Worldwide Patents of George P. Liang
  189. ^ US Patents of Hans-Joachim Santel
  190. ^ Worldwide Patents of Hans-Joachim Santel
  191. ^ US Patents of Gisela Lorenz
  192. ^ Worldwide Patents of Gisela Lorenz
  193. ^ US Patents of Wael W. Diab
  194. ^ Worldwide Patents of Wael W. Diab
  195. ^ US Patents of Paul W. Dent
  196. ^ Worldwide Patents of Paul W. Dent
  197. ^ US Patents of Garry R. Jackson
  198. ^ Worldwide Patents of Garry R. Jackson
  199. ^ US Patents of Lisa Seacat DeLuca
  200. ^ Worldwide Patents of Lisa Seacat DeLuca
  201. ^ George Westinghouse article at ideafinder.com
  202. ^ Hubert, P. G. (1894). Men of achievement. Inventors. New York: Charles Scribner's Sons. Page 296+
  203. ^ George Westinghouse article in Encyclopædia Britannica
  204. ^ US Patents of Brent A. Anderson
  205. ^ Worldwide Patents of Brent A. Anderson
  206. ^ US Patents of Robert R. Schmidt
  207. ^ Worldwide Patents of Robert R. Schmidt
  208. ^ US Patents of Mark W. Kroll
  209. ^ Worldwide Patents of Mark W. Kroll
  210. ^ Bio of Mark Kroll
  211. ^ US Patents of Norman M. Berry
  212. ^ Worldwide Patents of Norman M. Berry
  213. ^ US Patents of Jeffrey E. Stahmann
  214. ^ Worldwide Patents of Jeffrey E. Stahmann
  215. ^ US Patents of William Daniel Hillis
  216. ^ Worldwide Patents of William Daniel Hillis
  217. ^ US Patents of Carl J. Radens
  218. ^ Worldwide Patents of Carl J. Radens
  219. ^ US Patents of Ajith K. Kumar
  220. ^ Worldwide Patents of Ajith K. Kumar
  221. ^ US Patents of Steven L. Teig
  222. ^ Worldwide Patents of Steven L. Teig
  223. ^ US Patents of Liang Liu
  224. ^ Worldwide Patents of Liang Liu
  225. ^ US Patents of Victoria Smith
  226. ^ Worldwide Patents of Victoria Smith
  227. ^ US Patents of Keith R. Walker
  228. ^ Worldwide Patents of Keith R. Walker
  229. ^ US Patents of Hanson S. Gifford III
  230. ^ Worldwide Patents of Hanson S. Gifford III
  231. ^ Robert G. LeTourneau: Dean of Earthmoving
  232. ^ Texas Co-op Power: He Was a Mover and a Shaker
  233. ^ US Patents of Daniel J. Winarski
  234. ^ Worldwide Patents of Daniel J. Winarski
  235. ^ US Patents of Kulvir S. Bhogal
  236. ^ Worldwide Patents of Kulvir S. Bhogal
  237. ^ US Patents of Victor S. Moore
  238. ^ Worldwide Patents of Victor S. Moore
  239. ^ US Patents of William R. Tonti
  240. ^ Worldwide Patents of William R. Tonti
  241. ^ US Patents of Bengt Lindoff
  242. ^ Worldwide Patents of Bengt Lindoff
  243. ^ US Patents of Dean L. Kamen
  244. ^ Worldwide Patents of Dean L. Kamen
  245. ^ US Patents of Ruilong Xie
  246. ^ Worldwide Patents of Ruilong Xie
  247. ^ US Patents of Lawrence A. Clevenger
  248. ^ Worldwide Patents of Lawrence A. Clevenger
  249. ^ US Patents of Adam Heller
  250. ^ Worldwide Patents of Adam Heller
  251. ^ The 12 US Patents of Adam Heller prior to 1976
  252. ^ US Patents of Brent Keeth
  253. ^ Worldwide Patents of Brent Keeth
  254. ^ US Patents of Jeffrey W. Sleight
  255. ^ Worldwide Patents of Jeffrey W. Sleight
  256. ^ US Patents of Hartley Owen
  257. ^ Worldwide Patents of Hartley Owen
  258. ^ US Patents of Michael A. Rothman
  259. ^ Worldwide Patents of Michael A. Rothman
  260. ^ US Patents of Pouya Hashemi
  261. ^ Worldwide Patents of Pouya Hashemi
  262. ^ US Patents of Yoshihiro Kikuchi
  263. ^ Worldwide Patents of Yoshihiro Kikuchi
  264. ^ US Patents of Esmael H. Dinan
  265. ^ Worldwide Patents of Esmael H. Dinan
  266. ^ US Patents of Harry (Tom) Graef
  267. ^ Worldwide Patents of Harry (Tom) Graef
  268. ^ US Patents of Nobuyuki Taniguchi
  269. ^ Worldwide Patents of Nobuyuki Taniguchi
  270. ^ US Patents of Takeshi Chujoh
  271. ^ Worldwide Patents of Takeshi Chujoh
  272. ^ US Patents of Bran Ferren
  273. ^ Worldwide Patents of Bran Ferren
  274. ^ US Patents of Rajiv V. Joshi
  275. ^ Worldwide Patents of Rajiv V. Joshi
  276. ^ US Patents of Johnny M. Shieh
  277. ^ Worldwide Patents of Johnny M. Shieh
  278. ^ US Patents of Philip S. Yu
  279. ^ Worldwide Patents of Philip S. Yu
  280. ^ US Patents of Sarbajit K. Rakshit
  281. ^ Worldwide Patents of Sarbajit K. Rakshit
  282. ^ US Patents of Thomas J. Kennedy III
  283. ^ Worldwide Patents of Thomas J. Kennedy III
  284. ^ US Patents of Dorin Comaniciu
  285. ^ Worldwide Patents of Dorin Comaniciu
  286. ^ US Patents of Gerald F. McBrearty
  287. ^ Worldwide Patents of Gerald F. McBrearty
  288. ^ US Patents of Louis B. Rosenberg
  289. ^ Worldwide Patents of Louis B. Rosenberg
  290. ^ US Patents of Paul Ian Mackey
  291. ^ Worldwide Patents of Paul Ian Mackey
  292. ^ US Patents of Imad Libbus
  293. ^ Worldwide Patents of Imad Libbus
  294. ^ US Patents of Assaf Natanzon
  295. ^ Worldwide Patents of Assaf Natanzon
  296. ^ US Patents of Gregory McAvoy
  297. ^ Worldwide Patents of Gregory McAvoy
  298. ^ US Patents of Sebastian T. Ventrone
  299. ^ Worldwide Patents of Sebastian T. Ventrone
  300. ^ US Patents of Zvi Or-Bach
  301. ^ Worldwide Patents of Zvi Or-Bach
  302. ^ US Patents of Hiroshi (You) Yoshioka
  303. ^ Worldwide Patents of Hiroshi (You) Yoshioka
  304. ^ US Patents of Patrick B. Usoro
  305. ^ Worldwide Patents of Patrick B. Usoro
  306. ^ Prolific Inventors: Who are They and Where do They Locate? International Centre for Economic Research Working Paper No. 14/2010
  307. ^ "List of Nikola Tesla patents
  308. ^ Jim Bieberich's Complete Nikola Tesla U.S. Patent Collection
  309. ^ a b The Patent Board website
  310. ^ 1790 Analytics website
  311. ^ USPTO Utility Patent Search for Rick Allen Hamilton II for 2012
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