List of prolific inventors

From Wikipedia, the free encyclopedia
Jump to navigation Jump to search

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

Worldwide utility patents[edit]

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 Patents Country Patent Years Years Patents / Year Majority assignment
Shunpei Yamazaki [5] 5673  Japan 1972-2020 49 116 Semiconductor Energy Laboratory
Kia Silverbrook [6] 4747  Australia 1994-2018 25 190 Silverbrook Research
Kangguo Cheng [7] 2130  USA 2004-2020 17 125 IBM
Lowell L. Wood, Jr. [8] 1937  USA 1977-2020 44 44 Intellectual Ventures
Roderick A. Hyde [9] 1847  USA 2001-2020 20 92 Intellectual Ventures
Jun Koyama [10] 1405  Japan 1991-2020 30 47 Semiconductor Energy Laboratory
Gurtej Sandhu [11] 1344  India 1991-2020 30 45 Micron
Paul Lapstun [12] 1292  Australia 2000-2020 21 62 Silverbrook Research
Clarence T. Tegreene [13] 1218  USA 2000-2020 21 58 Intellectual Ventures
Shou-Shan Fan [14] 1110  China 2006-2020 15 74 Hon Hai
Leonard Forbes [15] 1108  Canada 1991-2019 29 38 Micron
Edward K. Y. Jung [16] 1090  USA 1996-2020 25 44 Intellectual Ventures
Thomas Edison [17] 1084  USA 1869-1931 63 17 Thomas Edison
Donald E. Weder [18] 1000  USA 1978-2017 40 25 Weder Family Trust
George Albert Lyon [19] 993  Canada 1901-1965 65 15 Lyon George Albert
Rick Allen Hamilton II [20] 987  USA 1999-2020 22 45 IBM
Jay S. Walker [21] 965  USA 1998-2020 23 42 Walker Digital
Jordin T. Kare [22] 964  USA 1992-2020 29 33 Intellectual Ventures
John F. O'Connor [23] 949  USA 1901-1935 35 27 William H. Miner
Michael J. Sullivan [24] 944  USA 1989-2020 32 30 Acushnet Holdings
Melvin De Groote [25] 925  USA 1924-1966 43 22 Petrolite
Francis H. Richards [26] 894  USA 1899-1930 32 28 Francis H. Richards
Nathan Myhrvold [27] 884  USA 1994-2020 27 33 Intellectual Ventures
Mark Malamud [28] 872  USA 1997-2020 24 36 Intellectual Ventures
Ahmadreza Rofougaran [29] 869  USA 2002-2020 19 46 Broadcom
Robert W. Lord [30] 850  USA 2003-2020 18 47 Intellectual Ventures
Royce A. Levien [31] 842  USA 1997-2020 24 35 Intellectual Ventures
William H. Eby [32] 834  USA 1994-2020 27 31 Monsanto
Muriel Y. Ishikawa [33] 822  USA 2002-2020 19 43 Intellectual Ventures
Warren Farnworth [34] 772  USA 1990-2017 28 28 Micron
Salman Akram [35] 765  USA 1995-2020 26 29 Micron
Carleton Ellis [36] 753  USA 1902-1946 45 17 Ellis Foster Co
Jeyhan Karaoguz [37] 751  USA 1996-2020 25 30 Broadcom
Hideo Ando [38] 729  Japan 1983-2017 35 21 Toshiba
Ali Khakifirooz [39] 724  USA 2011-2020 10 72 IBM
George Spector [40] 722  USA 1975-1998 24 30 George Spector
Austin L. Gurney [41] 715  USA 1999-2020 22 32 Genentech
Tetsujiro Kondo [42] 697  Japan 1987-2020 34 20 Sony
Elihu Thomson [43] 696  UK 1899-1935 37 19 GE
John M. Santosuosso [44] 689  USA 2001-2020 20 34 IBM
Clifford A. Pickover [45] 689  USA 1992-2020 29 24 IBM
Bruce B. Doris [46] 680  USA 1995-2020 26 26 IBM
Devendra K. Sadana [47] 667  India 1983-2020 38 18 IBM
William I. Wood [48] 653  USA 1981-2016 36 18 Genentech
Simon R. Walmsley [49] 651  Australia 1995-2015 21 31 Silverbrook Research
Eric C. Leuthardt [50] 649  USA 2006-2020 15 43 Intellectual Ventures
Chih-Chao Yang [51] 626  USA 2003-2020 18 35 IBM
Audrey D. Goddard [52] 625  USA 1997-2019 23 27 Genentech
Edward J. Nowak [53] 625  USA 1979-2020 42 15 IBM
Jerome H. Lemelson [54] 606  USA 1953-2009 57 11 Jerome Lemelson
Tadahiro Ohmi [55] 597  Japan 1981-2018 38 16 Tadahiro Ohmi
Ruilong Xie [56] 597  USA 2013-2020 8 75 IBM
Kie Y. Ahn [57] 596  USA 1976-2018 43 14 Micron
Béla Barényi [58] 595  Austria 1939-1979 41 15 Daimler
Paul J. Godowski [59] 579  USA 1994-2014 21 28 Genentech
Artur Fischer [60] 570  Germany 1951-2006 56 10 Artur Fischer
Sarbajit K. Rakshit [61] 566  India 2013-2020 8 71 IBM
Gregory J. Boss [62] 565  USA 2008-2020 13 43 IBM
Jeffrey P. Gambino [63] 563  USA 1992-2020 29 19 IBM
Victoria Y. H. Wood [64] 556  USA 2009-2020 12 46 Intellectual Ventures
Louis L. Hsu [65] 551  USA 1988-2016 29 19 IBM
Anthony K. Stamper [66] 539  USA 1998-2020 23 23 IBM
Edwin H. Land 535  USA 1933-1990 58 9 Polaroid
Ronald S. Cok [67] 531  USA 1986-2020 35 15 Kodak
Lisa Seacat DeLuca [68] 528  USA 2009-2020 12 44 IBM
Kai-Li Jiang [69] 527  China 2006-2020 15 35 Hon Hai
Henri Dreyfus [70] 524   Switzerland 1916-1945 30 17 Henri Dreyfus
Belgacem Haba [71] 519  Algeria 1991-2020 30 17 Tessera
Robert S. Langer [72] 517  USA 1983-2020 38 14 MIT
Clyde C. Farmer 513  USA 1905-1960 56 9 Westinghouse Air Brake
Heinz Focke [73] 512  Germany 1965-2013 49 10 Focke & Co.
Mark I. Gardner [74] 511  USA 1994-2010 17 30 AMD
Ravi K. Arimilli [75] 508  India 1992-2019 28 18 IBM
Louis H. Morin [76] 503  USA 1924-1969 46 11 Louis H. Morin
Tobin A. King [77] 501  Australia 2000-2018 19 26 Silverbrook Research
James M. Hart [78] 487  USA 1988-2019 32 15 General Motors
Jack A. Mandelman [79] 481  USA 1987-2014 28 17 IBM
Frederick A. Ware [80] 476  USA 1981-2020 40 12 Rambus
Esmael H. Dinan [81] 468  USA 2006-2020 15 31 Ofinno
Stuart C. Salter [82] 462  USA 2009-2020 12 38 Ford
Brian M. O'Connell [83] 462  USA 2009-2020 12 38 IBM
Akira Nakazawa [84] 460  Australia 1980-2020 41 11 Silverbrook Research
John L. Melanson [85] 459  USA 1978-2020 43 11 Cirrus Logic
Eberhard Ammermann [86] 451  Germany 1979-2015 37 12 BASF
Thomas E. Murray [87] 449  USA 1891-1940 50 9 Thomas E. Murray
Pouya Hashemi [88] 448  USA 2013-2020 8 56 IBM
Hongyong Zhang [89] 440  Japan 1993-2016 24 18 Semiconductor Energy Laboratory
Vincent J. Zimmer [90] 440  USA 1999-2020 22 20 Intel
Lawrence A. Clevenger [91] 437  USA 1996-2020 25 17 IBM
Scott H. Wittkopp [92] 435  USA 2001-2020 20 22 General Motors
Brent A. Anderson [93] 432  USA 2001-2020 20 22 IBM
Xuemin (Sherman) Chen [94] 422  USA 1997-2020 24 18 Broadcom
John Hays Hammond, Jr. [95] 417  USA 1912-1967 56 7 John Hays Hammond, Jr.
Hossein Eslambolchi [96] 416  USA 1993-2019 27 15 AT&T
Cary L. Bates [97] 414  USA 1994-2020 27 15 IBM
Wilhelm Brandes [98] 411  Germany 1976-2010 35 12 Bayer
Valentina Salapura [99] 403  USA 2004-2020 17 24 IBM
Stanford R. Ovshinsky [100] 400  USA 1952-2012 61 7 Energy Conversion Devices
Bengt Lindoff [101] 395  Sweden 2000-2020 21 19 Ericsson
Josef Theurer [102] 388  Austria 1958-2016 59 7 Plasser & Theurer
David V. Horak [103] 388  USA 1992-2020 29 13 IBM
Paul W. Dent [104] 385  USA 1984-2020 37 10 Ericsson
Wael W. Diab [105] 382  USA 2003-2020 18 21 Broadcom
George P. Liang [106] 379  China 1983-2018 36 11 Florida Turbine Technologies
Hans-Joachim Santel [107] 377  Germany 1986-2013 28 13 Bayer
Michael (S.) Tsirkin [108] 377  Israel 2012-2020 9 42 Red Hat
Gisela Lorenz [109] 374  Germany 1990-2015 26 14 BASF
Jeffrey E. Stahmann [110] 373  USA 1994-2020 27 14 Cardiac Pacemakers
Garry R. Jackson [111] 367  Australia 2001-2016 16 23 Silverbrook Research
William Daniel Hillis [112] 366  USA 1986-2020 35 10 Intellectual Ventures
Timothy J. Slegel [113] 363  USA 1993-2020 28 13 IBM
Elizabeth A. Sweeney [114] 363  USA 2010-2020 11 33 Intellectual Ventures
George Westinghouse [115] 361  USA 1873-1918 46 8 George Westinghouse
Norman M. Berry [116] 360  Australia 2006-2020 15 24 Silverbrook Research
Carl J. Radens [117] 358  USA 1994-2020 27 13 IBM
Dean L. Kamen [118] 356  USA 1979-2020 42 8 DEKA
Assaf Natanzon [119] 355  Israel 2007-2020 14 25 EMC
Mark W. Kroll [120] 354  USA 1987-2019 33 11 Pacesetter
Robert R. Schmidt [121] 350  Germany 1971-2005 35 10 Bayer
Philip D. Nguyen [122] 348  USA 1992-2020 29 12 Halliburton
Hanson S. Gifford III [123] 347  USA 1986-2020 35 10 Medtronic
Ajith K. Kumar [124] 346  India 1984-2020 37 9 GE
Keith R. Walker [125] 343  Saudi Arabia 2003-2020 18 19 IBM
James E. Bostick [126] 336  USA 1993-2020 28 12 IBM
Daniel J. Winarski [127] 334  USA 1982-2020 39 9 IBM
Steven L. Teig [128] 332  USA 1995-2020 26 13 Cadence Design Systems
Kulvir S. Bhogal [129] 330  USA 2003-2020 18 18 IBM
Jasinder P. Singh [130] 322  USA 2010-2020 11 29 Sprint
Liang Liu [131] 320  China 2005-2020 16 20 Hon Hai
John M. Ganci [132] 320  USA 2009-2020 12 27 IBM
Frank J. Viola [133] 315  USA 1981-2019 39 8 Covidien
Victor S. Moore [134] 314  USA 1982-2019 38 8 IBM
Victoria Smith [135] 308  USA 2006-2017 12 26 Genentech
Cyprian E. Uzoh [136] 302  Nigeria 1998-2020 23 13 Invensas
Robert G. LeTourneau [137] 299  USA 1936-1968 33 9 LeTourneau Technologies
Ramachandra Divakaruni [138] 298  USA 2000-2020 21 14 IBM
Paul K. Dellock [139] 297  USA 2002-2020 19 16 Ford
William R. Tonti [140] 291  USA 1994-2016 23 13 IBM
Zine-Eddine Boutaghou [141] 290  Algeria 1994-2018 25 12 Seagate Technology
Adam Heller [142] 288  Romania 1968-2020 53 5 Abbott Laboratories
Jeffrey W. Sleight [143] 287  USA 1998-2020 23 12 IBM
Daniel C. Edelstein [144] 287  USA 1991-2020 30 10 IBM
Dorin Comaniciu [145] 287  USA 2003-2020 18 16 Siemens
Madhusudan K. Iyengar [146] 286  India 2005-2020 16 18 IBM
Brent Keeth [147] 283  USA 1994-2020 27 10 Micron
Sandeep R. Patil [148] 281  India 2008-2020 13 22 IBM
Andrew J. Ouderkirk [149] 281  USA 1989-2020 32 9 3M
Michael A. Rothman [150] 277  USA 2001-2020 20 14 Intel
Bor Z. Jang [151] 276  USA 1996-2020 25 11 Nanotek Instruments
Christopher J. Dawson [152] 273  USA 2006-2020 15 18 IBM
Paul R. Bastide [153] 270  USA 2013-2020 8 34 IBM
Bran Ferren [154] 268  USA 1986-2020 35 8 Intellectual Ventures
Hartley Owen [155] 267  USA 1976-2010 35 8 Mobil
Takeshi Chujoh [156] 267  Japan 1995-2020 26 10 Toshiba
Craig E. Hampel [157] 264  USA 1996-2020 25 11 Rambus
Rajiv V. Joshi [158] 262  USA 1986-2020 35 7 IBM
Michael L. Fripp [159] 261  USA 2004-2020 17 15 Halliburton
Zvi Or-Bach [160] 261  USA 1982-2020 39 7 MonolithIC 3D Inc.
Yoshihiro Kikuchi [161] 258  Japan 1994-2018 25 10 Toshiba
Harry (Tom) Graef [162] 256  USA 1976-2020 45 6 Diebold Nixdorf
Aruna Zhamu [163] 255  USA 2009-2020 12 21 Nanotek Instruments
Santokh S. Badesha [164] 252  India 1983-2019 37 7 Xerox
Imad Libbus [165] 249  USA 2007-2020 14 18 Cardiac Pacemakers
Johnny M. Shieh [166] 247  USA 1996-2020 25 10 IBM
Nobuyuki Taniguchi [167] 245  Japan 1979-2015 37 7 Minolta
Louis B. Rosenberg [168] 242  USA 1995-2020 26 9 Immersion
Hui Zang [169] 241  USA 2014-2020 7 34 GlobalFoundries
Philip S. Yu [170] 240  USA 1982-2018 37 6 IBM
James R. Kraemer [171] 235  USA 2008-2020 13 18 IBM
Seung H. Kang [172] 235  USA 2002-2020 19 12 Qualcomm
Thomas J. Kennedy III [173] 233  USA 1992-2020 29 8 Callaway
Gerald F. McBrearty [174] 231  USA 1997-2018 22 10 IBM
Mark A. Horowitz [175] 231  USA 1993-2020 28 8 Rambus
Stephen G. Perlman [176] 226  USA 1989-2020 32 7 Sony
James W. Seaman [177] 222  USA 2005-2020 16 14 IBM
Dureseti Chidambarrao [178] 221  USA 1995-2017 23 10 IBM
Paul Ian Mackey [179] 220  Australia 2008-2016 9 24 Silverbrook Research
Ilyas Mohammed [180] 218  USA 2003-2020 18 12 Tessera
Mukta Ghate Farooq [181] 217  India 1993-2020 28 8 IBM
Benzion Landa [182] 217  Israel 1976-2020 45 5 Savin
John A. Colgrove [183] 216  USA 1991-2020 30 7 Pure Storage
Vijay Narayanan [184] 214  USA 2004-2020 17 13 IBM
Jonathan J. Hull [185] 213  USA 1995-2020 26 8 Ricoh
Sebastian T. Ventrone [186] 212  USA 1989-2020 32 7 IBM
Rajarshi Gupta [187] 211  India 2004-2020 17 12 Qualcomm
Jed H. Rankin [188] 211  USA 2000-2020 21 10 IBM
Gregory J. McAvoy [189] 210  Ireland 2003-2020 18 12 Silverbrook Research
Shuji Nakamura [190] 210  Japan 1994-2020 27 8 UC Santa Barbara
Martin G. Keen [191] 208  UK 2016-2020 5 42 IBM
Hiroshi (You) Yoshioka [192] 205  Japan 1997-2015 19 11 Toshiba
Patrick B. Usoro [193] 205  USA 1999-2016 18 11 General Motors
Robert E. Fischell [194] 203  USA 1963-2020 58 4 Angel Medical Systems
Arup Bhattacharyya [195] 203  India 1974-2020 47 4 Micron
Sadeg M. Faris [196] 202  Libya 1979-2018 40 5 Reveo
Paul W. Coteus [197] 201  USA 1992-2020 29 7 IBM

This table is usually updated every Tuesday evening in US Eastern time, and is current as of June 2, 2020. The columns are defined as follows:

  • Inventor: The name of the inventor.
  • Patents: The number of utility patents that have been issued. Only utility patents (or the international equivalent) are listed, as a utility patent is a patent for an invention. Not all patents are for inventions. Other patent types include: design patents for the ornamental design of an object; plant patents for plant varieties; and reissue patents, where a correction is made to an already granted patent. This list does not include patent applications (patents pending) as there is no guarantee that a patent application actually describes a novel invention until the patent is granted.
  • Country: The country of birth or upbringing of the inventor, where known. If unknown, this is the country of residence identified in the inventor's patent filings.
  • Patent Years: The first and last year in which an inventor received a patent issuance.
  • Years: The number of years between and including the first and last year in which an inventor received a patent issuance.
  • Patents / Year: The average number of patents received per year [Patents column divided by Years column, rounded].
  • Majority assignment: The entity that has the most patents assigned from an inventor's portfolio. This is current and not original assignment. It is usually, but not always an indication of which company the inventor worked at for the majority of their patent activity.

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.[198] 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.[199][200]

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.[201] 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".

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".

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":[202]

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"[203]) and 1790 Analytics[204] of New Jersey. This list only considered living inventors, and thus did not include prolific inventors such 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[205] 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,[203] 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 May 6, 2011, Business Insider published an article titled: "The Ten Greatest Inventors In The Modern Era"[3] 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"[206] 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:[207]

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:[208]

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:[209]

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:[210]

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:[211]

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:[212]

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,[213] 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:

  • The lists were created on different dates. As many of the inventors in the lists are still active, the number of patents they hold are increasing.
  • While the U.S. Patent and Trademark Office (USPTO) is the primary source for U.S. patent information, only patents issued since 1976 can be electronically searched by the inventor's name at the USPTO website. For some of the listed inventors, such as Thomas Edison, all of their patents predate 1976, so other sources must be used.
  • Often entities list the worldwide total number of patents that they hold. This is not the same as the number of inventions, as a patent in one country may be for the same invention as a patent in another country. The set of patents covering a single invention in different countries is a Patent family.
  • The Time, USA Today and Portfolio lists show the total number of U.S. patents, including patents for designs (Design patents) as well as patents for inventions (Utility patents).
  • The annual lists from strutpatent.com list only those patents issued in the particular year to the inventor, not all of the inventor's patents.

See also[edit]

References[edit]

  1. ^ Thomas Alva Edison Biography at Rutgers University
  2. ^ List of Edison patents
  3. ^ a b The Ten Greatest Inventors In The Modern Era Business Insider, 6 May 2011
  4. ^ The True Inventor Basson-Booyens website
  5. ^ Patents of Shunpei Yamazaki
  6. ^ Patents of Kia Silverbrook
  7. ^ Patents of Kangguo Cheng
  8. ^ Patents of Lowell L. Wood, Jr.
  9. ^ Patents of Roderick A. Hyde
  10. ^ Patents of Jun Koyama
  11. ^ Patents of Gurtej Sandhu
  12. ^ Patents of Paul Lapstun
  13. ^ Patents of Clarence T. Tegreene
  14. ^ Patents of Shou-Shan Fan
  15. ^ Patents of Leonard Forbes
  16. ^ Patents of Edward K. Y. Jung
  17. ^ Patents of Thomas Edison
  18. ^ Patents of Donald E. Weder
  19. ^ Patents of George Albert Lyon
  20. ^ Patents of Rick Allen Hamilton II
  21. ^ Patents of Jay S. Walker
  22. ^ Patents of Jordin T. Kare
  23. ^ Patents of John F. O'Connor
  24. ^ Patents of Michael J. Sullivan
  25. ^ Patents of Melvin De Groote
  26. ^ Patents of Francis H. Richards
  27. ^ Patents of Nathan Myhrvold
  28. ^ Patents of Mark Malamud
  29. ^ Patents of Ahmadreza Rofougaran
  30. ^ Patents of Robert W. Lord
  31. ^ Patents of Royce A. Levien
  32. ^ Patents of William H. Eby
  33. ^ Patents of Muriel Y. Ishikawa
  34. ^ Patents of Warren Farnworth
  35. ^ Patents of Salman Akram
  36. ^ Patents of Carleton Ellis
  37. ^ Patents of Jeyhan Karaoguz
  38. ^ Patents of Hideo Ando
  39. ^ Patents of Ali Khakifirooz
  40. ^ Patents of George Spector
  41. ^ Patents of Austin L. Gurney
  42. ^ Patents of Tetsujiro Kondo
  43. ^ Patents of Elihu Thomson
  44. ^ Patents of John M. Santosuosso
  45. ^ Patents of Clifford A. Pickover
  46. ^ Patents of Bruce B. Doris
  47. ^ Patents of Devendra K. Sadana
  48. ^ Patents of William I. Wood
  49. ^ Patents of Simon R. Walmsley
  50. ^ Patents of Eric C. Leuthardt
  51. ^ Patents of Chih-Chao Yang
  52. ^ Patents of Audrey D. Goddard
  53. ^ Patents of Edward J. Nowak
  54. ^ Patents of Jerome H. Lemelson
  55. ^ Patents of Tadahiro Ohmi
  56. ^ Patents of Ruilong Xie
  57. ^ Patents of Kie Y. Ahn
  58. ^ Patents of Béla Barényi
  59. ^ Patents of Paul J. Godowski
  60. ^ Patents of Artur Fischer
  61. ^ Patents of Sarbajit K. Rakshit
  62. ^ Patents of Gregory J. Boss
  63. ^ Patents of Jeffrey P. Gambino
  64. ^ Patents of Victoria Y. H. Wood
  65. ^ Patents of Louis L. Hsu
  66. ^ Patents of Anthony K. Stamper
  67. ^ Patents of Ronald S. Cok
  68. ^ Patents of Lisa Seacat DeLuca
  69. ^ Patents of Kai-Li Jiang
  70. ^ Patents of Henri Dreyfus
  71. ^ Patents of Belgacem Haba
  72. ^ Patents of Robert S. Langer
  73. ^ Patents of Heinz Focke
  74. ^ Patents of Mark I. Gardner
  75. ^ Patents of Ravi K. Arimilli
  76. ^ Patents of Louis H. Morin
  77. ^ Patents of Tobin A. King
  78. ^ Patents of James M. Hart
  79. ^ Patents of Jack A. Mandelman
  80. ^ Patents of Frederick A. Ware
  81. ^ Patents of Esmael H. Dinan
  82. ^ Patents of Stuart C. Salter
  83. ^ Patents of Brian M. O'Connell
  84. ^ Patents of Akira Nakazawa
  85. ^ Patents of John L. Melanson
  86. ^ Patents of Eberhard Ammermann
  87. ^ Patents of Thomas E. Murray
  88. ^ Patents of Pouya Hashemi
  89. ^ Patents of Hongyong Zhang
  90. ^ Patents of Vincent J. Zimmer
  91. ^ Patents of Lawrence A. Clevenger
  92. ^ Patents of Scott H. Wittkopp
  93. ^ Patents of Brent A. Anderson
  94. ^ Patents of Xuemin (Sherman) Chen
  95. ^ Patents of John Hays Hammond, Jr.
  96. ^ Patents of Hossein Eslambolchi
  97. ^ Patents of Cary L. Bates
  98. ^ Patents of Wilhelm Brandes
  99. ^ Patents of Valentina Salapura
  100. ^ Patents of Stanford R. Ovshinsky
  101. ^ Patents of Bengt Lindoff
  102. ^ Patents of Josef Theurer
  103. ^ Patents of David V. Horak
  104. ^ Patents of Paul W. Dent
  105. ^ Patents of Wael W. Diab
  106. ^ Patents of George P. Liang
  107. ^ Patents of Hans-Joachim Santel
  108. ^ Patents of Michael (S.) Tsirkin
  109. ^ Patents of Gisela Lorenz
  110. ^ Patents of Jeffrey E. Stahmann
  111. ^ Patents of Garry R. Jackson
  112. ^ Patents of William Daniel Hillis
  113. ^ Patents of Timothy J. Slegel
  114. ^ Patents of Elizabeth A. Sweeney
  115. ^ Patents of George Westinghouse
  116. ^ Patents of Norman M. Berry
  117. ^ Patents of Carl J. Radens
  118. ^ Patents of Dean L. Kamen
  119. ^ Patents of Assaf Natanzon
  120. ^ Patents of Mark W. Kroll
  121. ^ Patents of Robert R. Schmidt
  122. ^ Patents of Philip D. Nguyen
  123. ^ Patents of Hanson S. Gifford III
  124. ^ Patents of Ajith K. Kumar
  125. ^ Patents of Keith R. Walker
  126. ^ Patents of James E. Bostick
  127. ^ Patents of Daniel J. Winarski
  128. ^ Patents of Steven L. Teig
  129. ^ Patents of Kulvir S. Bhogal
  130. ^ Patents of Jasinder P. Singh
  131. ^ Patents of Liang Liu
  132. ^ Patents of John M. Ganci
  133. ^ Patents of Frank J. Viola
  134. ^ Patents of Victor S. Moore
  135. ^ Patents of Victoria Smith
  136. ^ Patents of Cyprian E. Uzoh
  137. ^ Patents of Robert G. LeTourneau
  138. ^ Patents of Ramachandra Divakaruni
  139. ^ Patents of Paul K. Dellock
  140. ^ Patents of William R. Tonti
  141. ^ Patents of Zine-Eddine Boutaghou
  142. ^ Patents of Adam Heller
  143. ^ Patents of Jeffrey W. Sleight
  144. ^ Patents of Daniel C. Edelstein
  145. ^ Patents of Dorin Comaniciu
  146. ^ Patents of Madhusudan K. Iyengar
  147. ^ Patents of Brent Keeth
  148. ^ Patents of Sandeep R. Patil
  149. ^ Patents of Andrew J. Ouderkirk
  150. ^ Patents of Michael A. Rothman
  151. ^ Patents of Bor Z. Jang
  152. ^ Patents of Christopher J. Dawson
  153. ^ Patents of Paul R. Bastide
  154. ^ Patents of Bran Ferren
  155. ^ Patents of Hartley Owen
  156. ^ Patents of Takeshi Chujoh
  157. ^ Patents of Craig E. Hampel
  158. ^ Patents of Rajiv V. Joshi
  159. ^ Patents of Michael L. Fripp
  160. ^ Patents of Zvi Or-Bach
  161. ^ Patents of Yoshihiro Kikuchi
  162. ^ Patents of Harry (Tom) Graef
  163. ^ Patents of Aruna Zhamu
  164. ^ Patents of Santokh S. Badesha
  165. ^ Patents of Imad Libbus
  166. ^ Patents of Johnny M. Shieh
  167. ^ Patents of Nobuyuki Taniguchi
  168. ^ Patents of Louis B. Rosenberg
  169. ^ Patents of Hui Zang
  170. ^ Patents of Philip S. Yu
  171. ^ Patents of James R. Kraemer
  172. ^ Patents of Seung H. Kang
  173. ^ Patents of Thomas J. Kennedy III
  174. ^ Patents of Gerald F. McBrearty
  175. ^ Patents of Mark A. Horowitz
  176. ^ Patents of Stephen G. Perlman
  177. ^ Patents of James W. Seaman
  178. ^ Patents of Dureseti Chidambarrao
  179. ^ Patents of Paul Ian Mackey
  180. ^ Patents of Ilyas Mohammed
  181. ^ Patents of Mukta Ghate Farooq
  182. ^ Patents of Benzion Landa
  183. ^ Patents of John A. Colgrove
  184. ^ Patents of Vijay Narayanan
  185. ^ Patents of Jonathan J. Hull
  186. ^ Patents of Sebastian T. Ventrone
  187. ^ Patents of Rajarshi Gupta
  188. ^ Patents of Jed H. Rankin
  189. ^ Patents of Gregory J. McAvoy
  190. ^ Patents of Shuji Nakamura
  191. ^ Patents of Martin G. Keen
  192. ^ Patents of Hiroshi (You) Yoshioka
  193. ^ Patents of Patrick B. Usoro
  194. ^ Patents of Robert E. Fischell
  195. ^ Patents of Arup Bhattacharyya
  196. ^ Patents of Sadeg M. Faris
  197. ^ Patents of Paul W. Coteus
  198. ^ Prolific Inventors: Who are They and Where do They Locate? International Centre for Economic Research Working Paper No. 14/2010
  199. ^ List of Nikola Tesla patents
  200. ^ Jim Bieberich's Complete Nikola Tesla U.S. Patent Collection
  201. ^ USPTO publication: Prolific Inventors Receiving Utility Patents 1988-1997
  202. ^ You really can find identities of top patent holders USA Today, Dec 13, 2005
  203. ^ a b The Patent Board website
  204. ^ 1790 Analytics website
  205. ^ Masters of invention Portfolio, October 15, 2007
  206. ^ Strutpatent list of the top 10 inventors since 1990
  207. ^ List of the top ten US patent grantees for 2007 StrutPatent.com website
  208. ^ List of the top ten US patent grantees for 2008 StrutPatent.com website
  209. ^ List of the top ten US patent grantees for 2009 StrutPatent.com website
  210. ^ List of the top ten US patent grantees for 2010 StrutPatent.com website
  211. ^ List of the top ten US patent grantees for 2011 StrutPatent.com website
  212. ^ List of the top ten US patent grantees for 2012 StrutPatent.com website
  213. ^ USPTO Utility Patent Search for Rick Allen Hamilton II for 2012