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Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025

Rankings count each patent once by its primary Cooperative Patent Classification. All-time pages aggregate the full database; year pages use patent grant year.

Recent years: 2016201720182019202020212022202320242025

Patents per Year

Patents granted per year, 1996 to 2025Bar chart with a peak of 422 patents in 2024.peak 4221996: 177 patents19961997: 154 patents1998: 176 patents1999: 145 patents19992000: 161 patents2001: 230 patents2002: 225 patents20022003: 193 patents2004: 156 patents2005: 161 patents20052006: 147 patents2007: 137 patents2008: 120 patents20082009: 147 patents2010: 209 patents2011: 179 patents20112012: 246 patents2013: 321 patents2014: 338 patents20142015: 329 patents2016: 327 patents2017: 365 patents20172018: 325 patents2019: 377 patents2020: 392 patents20202021: 383 patents2022: 363 patents2023: 349 patents20232024: 422 patents2025: 387 patents2025

Top Inventors

Rank Inventor Patents Primary Company
1 Kenneth W. Huck 11 Trinity North American Freight Car
2 Jeffrey Michael Fries 9 Alstom Transport Technologies
3 James D. Brooks 6 GE
#4 Harry Kirk Mathews, Jr. 5 GE
#5 William Shields 5 Alstom Transport Technologies
#6 Yoshi Sato 5 Kawasaki
#7 Brant R. McGhee 4 Trinity North American Freight Car
#8 Bret Dwayne Worden 4 GE
#9 Caglar Ozerdim 4 Trinity North American Freight Car
#10 Christopher C. Harkey 4 Trinity North American Freight Car
#11 Jared Klineman Cooper 4 GE
#12 James W. Forbes 4 National Steel Car Limited
#13 Joseph Forrest Noffsinger 4 GE
#14 Manuel Tavares 4 Pennsy
#15 Peter M. Bartek 4
#16 Thierry Le Moigne 4 Aktiebolaget Skf
#17 Victor M. Mankarious 4 Trinity North American Freight Car
#18 Ajith Kuttannair Kumar 3 GE
#19 Arthur Kontetzki 3 Voith Patent Gmbh
#20 Brian Douglas Lawry 3 GE
#21 Brian Nedward Meyer 3 GE
#22 Darel Mesher 3 Tetra Tech
#23 Erik L. Gotlund 3 Nevis Industries
#24 Erich A. Schoedl 3 Miner Enterprises
#25 Guillaume Cottard 3 Agence Nationale Pour La Gestion Des Déchets Radioactifs
#26 Harald Fischer 3 Lear
#27 Hiten Y. Mehta 3 Trinity North American Freight Car
#28 Huu-Thi Do 3 Alstom Transport Technologies
#29 Jerry W. Vande Sande 3 Trinity North American Freight Car
#30 Jonathan Sunde 3 Strato
#31 Kazuo Isomura 3 Kawasaki
#32 Koichi Murata 3 Kawasaki
#33 Kyle R. Coston 3 Trinity Rail Group
#34 Radovan Seifried 3 Siemens Mobility Austria Gmbh
#35 Roshan N. Manibharathi 3 Nevis Industries
#36 Shunichi Nakao 3 Kawasaki
#37 Takashi Miyauchi 3 Canon
#38 Takehiro Nishimura 3 Kawasaki
#39 Tomasz Bis 3 National Steel Car Limited
#40 Walter J. Peach 3 Standard Car Truck
#41 William Cherrick Schoonmaker 3 GE
#42 Zachary Ryan Brook 3 Pennsy
#43 Zahid F. Mian 3 International Electronic Machines
#44 Aaron Stern 2 Pennsy
#45 Albert Han-Ping Chung 2 Avante International Technology
#46 Alejandro Medrano 2 Whitmore Manufacturing
#47 Alexandre Neophytou 2 Hyperloop Transportation Technologies
#48 Alain Rodet 2
#49 Alexander Shubs, Jr. 2 Electro-Motive Diesel
#50 Alexandre Zisa 2 Hyperloop Transportation Technologies
#51 Andrew Brown 2 Trinity North American Freight Car
#52 Atsuhito Yamaguchi 2 Nabtesco
#53 Brian C. Beckman 2 Amazon
#54 Brian Joseph Hogan 2 Siemens Mobility Gmbh
#55 Carlos D. Sanchez 2 Allstate Insurance
#56 Chuqiang Tang 2 Crrc Yangtze Group Co.
#57 Charles L. Wolf 2
#58 David Birdwell 2 Whitmore Manufacturing
#59 David Matthew Roenspies 2 Progress Rail Locomotive
#60 Emmanuel Lafoix 2 Alstom Transport Technologies
#61 Eric C. Wright 2
#62 F. Andrew Nibouar 2 Bedloe Industries
#63 George S. Creighton 2 Trinity Industrial
#64 Gonzalo Duran Ariza 2
#65 Guangjun Gao 2 Eye Drop Imaging Technology
#66 Hans Juergen Maerkl 2 Siemens Mobility Gmbh
#67 Heiko Meyer 2 Siemens Aktiengesellschaft
#68 Hiroshi Abe 2 Asahi Seiko Co.
#69 Hideki Kitada 2 Fujitsu Limited
#70 Holger Schmidt 2 University of California
#71 James Kiss 2 Alstom Transport Technologies
#72 Jennifer Lynn Coyne 2 GE
#73 Jeffrey D. Kernwein 2
#74 Jeremy Thomas McGarry 2 GE
#75 John D. Anderson 2 Standard Car Truck
#76 John Coseglia 2 Amsted Rail Company
#77 Jose Julio Muyo 2 Alstom Transport Technologies
#78 John Albert Plutt, Jr. 2 Metrom Rail
#79 John Roberts 2 Railserve
#80 Joseph Daniel Wakeman 2 GE
#81 Junichi Shirakawa 2 Sumitomo Wiring Systems
#82 Katsuichiro Awano 2 East Japan Railway
#83 Kazuhisa Echizen 2 East Japan Railway
#84 Kay Uwe Kolshorn 2 Voith Patent Gmbh
#85 Kelvin Chiddick 2 Whitmore Manufacturing
#86 Kevin Kwong-Tai Chung 2 Amerasia International Technology
#87 Kenneth A. James 2
#88 Keiichiro Kamura 2 Kawasaki
#89 Kurt A. Gunther 2 Metrom Rail
#90 Kyle Wilson 2 Whitmore Manufacturing
#91 Lee A. Reitz 2 Trinity Rail Group
#92 Liangcai Lin 2 Crrc Yangtze Group Co.
#93 Lijun Ma 2 Crrc Qingdao Sifang Co.
#94 Ludovic Fenayon 2 Aktiebolaget Skf
#95 Marc R. Beauvais 2
#96 Manfred Brunninger 2 Franz Plasser Bahnbaumaschinen-Industrie-Gesellschaft Mbh
#97 Masahiro Chikamori 2 Mitsubishi Electric
#98 Marc W. Cygnus 2 Metrom Rail
#99 Mark Bradshaw Kraeling 2 GE
#100 Manuel Kroiss 2 Siemens Mobility Gmbh

Top Companies

Rank Company Patents
1 GE 27
2 Alstom Transport Technologies 23
3 Siemens Mobility Gmbh 19
#4 Westinghouse Air Brake 14
#5 Kawasaki 12
#6 Mitsubishi Electric 11
#7 Trinity North American Freight Car 11
#8 Progress Rail Locomotive 7
#9 Aktiebolaget Skf 5
#10 Amsted Rail Company 5
#11 Bombardier Transportation Gmbh 5
#12 Crrc Qingdao Sifang Co. 5
#13 Harsco 5
#14 National Steel Car Limited 5
#15 Siemens Aktiengesellschaft 5
#16 Jac Operations 4
#17 Pennsy 4
#18 Standard Car Truck 4
#19 Strato 4
#20 Agence Nationale Pour La Gestion Des Déchets Radioactifs 3
#21 Dellner Couplers Ab 3
#22 Innova Patent Gmbh 3
#23 International Electronic Machines 3
#24 Miner Enterprises 3
#25 Nevis Industries 3
#26 Plasser & Theurer Export Von Bahnbaumaschinen Gesellschaft M.B.H. 3
#27 Siemens Ag Österreich 3
#28 Tetra Tech 3
#29 Voith Patent Gmbh 3
#30 Amazon 2
#31 Avante International Technology 2
#32 Central South University 2
#33 Crrc Qingdao Sifang Rolling Stock Research Institute Co. 2
#34 Crrc Yangtze Group Co. 2
#35 Daifuku Co. 2
#36 East Japan Railway 2
#37 Faiveley Transport Amiens 2
#38 Hitachi 2
#39 Hyperloop Transportation Technologies 2
#40 Mack Rides Gmbh & Co. Kg 2
#41 Metrom Rail 2
#42 Nabtesco 2
#43 Railserve 2
#44 Saint-Gobain Glass France 2
#45 Sumitomo Electric Industries 2
#46 The Boeing 2
#47 Trinity Rail Group 2
#48 Unknown 2
#49 Whitmore Manufacturing 2
#50 Comcast 2
#51 IBM 2
#52 Aero Transportation Products 1
#53 Arup Ventures Limited 1
#54 Axtone Spolka Akcyjna 1
#55 Bayer Cropscience 1
#56 Beckhoff Automation Gmbh 1
#57 Bedloe Industries 1
#58 Bnsf Logistics 1
#59 B&R Industrial Automation Gmbh 1
#60 Carnegie Mellon University 1
#61 Crrc Tangshan Co. 1
#62 Drax Power Limited 1
#63 Eaglerail Container Logistics 1
#64 Intellectual Ventures 1
#65 Georgetown Rail Equipment 1
#66 Harris 1
#67 Hübner Gmbh & Co. Kg 1
#68 Here Global B.V. 1
#69 Hewlett Packard Enterprise 1
#70 Hitachi Kokusai Electric 1
#71 Hitachi Rail Sts Usa 1
#72 Holland 1
#73 Infrastructure Preservation 1
#74 Init Innovative Informatikanwendungen In Transport-, Verkehrs- Und Leitsystemen Gmbh 1
#75 Ireco 1
#76 Kabushiki Kaisha Toshiba 1
#77 Knorr-Bremse Ag 1
#78 Knorr-Bremse Systeme Für Schienenfahrzeuge Gmbh 1
#79 KAIST 1
#80 Korea Railroad Research Institute 1
#81 Kyosan Electric Mfg. Co. 1
#82 L.B. Foster Rail Technologies 1
#83 Leitner S.P.A. 1
#84 Leoni Kabel Gmbh 1
#85 Lohr Industrie 1
#86 Loram Maintenance Of Way 1
#87 Lsis Co. 1
#88 Mahle International Gmbh 1
#89 Micro Precision 1
#90 Mi-Jack Products 1
#91 Miracle Recreation Equipment 1
#92 Mitsubishi Heavy Industries Engineering 1
#93 National Railroad Passenger 1
#94 Nippon Sharyo 1
#95 Nippon Steel 1
#96 Nippon Steel & Sumitomo Metal 1
#97 Nordco 1
#98 Optasense Holdings Limited 1
#99 Optim 1
#100 Oz Lifting Products 1