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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 10 Trinity North American Freight Car
2 Trond Austrheim 7 Autostore Technology As
3 Anthony C. Scoville 6 Sst Systems
#4 Bradley M. Andreae 6 Sst Systems
#5 Chad Martin Andreae 6 Sst Systems
#6 Stephen C. Mann 6 Sst Systems
#7 Alon Green 5 Thales Canada
#8 Bryan Scott Queen 5 Clone667
#9 Benjamin Stuart Stabler 4 Parallel Systems
#10 Devin Steven Sage 4 C.D.L. Electric Company
#11 Fumikazu Kounoike 4 Kawasaki
#12 James D. Brooks 4 GE
#13 Jeffrey Michael Fries 4 Alstom Transport Technologies
#14 John Howard 4 Parallel Systems
#15 Lee A. Reitz 4 Trinity Rail Group
#16 Marco Antonio Ibarra 4 C.D.L. Electric Company
#17 Matthew Soule 4 Parallel Systems
#18 Daniel Spencer 3 Siemens Mobility Gmbh
#19 Kenneth Wayne Black 3 National Steel Car Limited
#20 Kyle R. Coston 3 Trinity Rail Group
#21 Michael Carmen Lawson 3 C.D.L. Electric Company
#22 Pete Claussen 3 Knoxville Locomotive Works
#23 Peter L. Jones 3 Gunderson
#24 Ricky A. Cribbs 3 Trinity Rail Group
#25 Scott Gatewood 3 Knoxville Locomotive Works
#26 Walter Kinio 3 Thales Canada
#27 Adam Deel 2 Preformed Line Products
#28 Akira Nakanishi 2 Sony
#29 Alejandro Badolato Martin 2
#30 Alexis Bonnet 2 Speedinnov
#31 Alexander Prix 2 Siemens Mobility Austria Gmbh
#32 Andrew Michael Ellis 2 Safran Landing Systems
#33 Anthony Kim 2 Ensco
#34 Andrew J. Morin 2 Standard Car Truck
#35 BERNHARD POESEL 2 Siemens Mobility Gmbh
#36 Boyi Su 2 Beijing Jiaotong University
#37 Brian G. Maki 2 Ireco
#38 Bret Dwayne Worden 2 GE
#39 Carter Ray Andrews 2 Trinity Rail Group
#40 Christoph Adam 2 Siemens Mobility Gmbh
#41 Christopher C. Harkey 2 Trinity North American Freight Car
#42 Christopher M. Romero 2 Bnsf Railway
#43 Christophe Sarti 2 Speedinnov
#44 Chris Schuchmann 2 Alstom Transport Technologies
#45 Codrington E. Barzey 2 Trinity Rail Group
#46 David Ford 2 Ensco
#47 David Kiley 2 Cavnue Technology
#48 David D. Van Dorpe 2 Rockwell Automation
#49 Duane Maxwell 2 Bby Solutions
#50 Edward M. Meyers 2 Bnsf Railway
#51 Eduard Nies 2 Knorr-Bremse Systeme Für Schienenfahrzeuge Gmbh
#52 Etienne Feger 2 Speedinnov
#53 Georg Eitelhuber 2 Nomadd Desert Solar Solutions
#54 Glenn A. Sandheinrich 2 American Railcar Industries
#55 Graeme Peter Arthur Klim 2 Safran Landing Systems Canada
#56 Gregory J. Saxton 2 Gunderson
#57 Herbert Kammerloher 2 Siemens Mobility Gmbh
#58 Henry R. Schafer 2 Bnsf Railway
#59 Henrik Timm Sørensen 2 Vestas Wind Systems A/S
#60 Jason Lee Honeck 2 Railway Equipment
#61 Jacob Johannes Kohlruss 2 Siemens Mobility Gmbh
#62 James A. Warwick 2 Gunderson
#63 Jeffrey Bloom 2 Ensco
#64 Jesse Herlocker 2 Alstom Transport Technologies
#65 Jeffrey D. Kernwein 2
#66 Jingjun Zhang 2 GE
#67 Joris Bonnesoeur 2 Speedinnov
#68 Joel Hachet 2 Gec Alsthom Transport Sa
#69 John Ross 2 Alstom Transport Technologies
#70 Justin Dobsch 2 Gunderson
#71 Jurgen Muhr 2 Knorr-Bremse Systeme Für Schienenfahrzeuge Gmbh
#72 Karen A. Shaw 2
#73 Kurt A. Gunther 2 Metrom Rail
#74 Kurt Jensen 2 International Paper
#75 Larry C. Valentine 2 Bnsf Railway
#76 Lisa Kelly 2 Oracle
#77 Masashi Asuka 2 Mitsubishi Electric
#78 Maryam Cooley 2 Cooley Enterprises
#79 Mark R. Cooper 2 Rockwell Automation
#80 Mark Corbo 2 Siemens Mobility Gmbh
#81 Malte Hammerl 2 Siemens Mobility Gmbh
#82 Marco A. Morales 2 Trinity Rail Group
#83 Mathew O'Sullivan 2 Cavnue Technology
#84 Mark A. Sterrett 2 Knorr-Bremse Systeme Für Schienenfahrzeuge Gmbh
#85 Mitchell Beard 2 Palantir Technologies
#86 Michael James Brick 2 Bnsf Railway
#87 Michael E. Ring 2
#88 Mike E. Teaford 2 Bnsf Railway
#89 Nathan Fletcher 2 Siemens Mobility Gmbh
#90 Nenad Mijatovic 2 Alstom Transport Technologies
#91 Oliver M. Veit 2 National Steel Car Limited
#92 Patrick E. Ozimek 2 Rockwell Automation
#93 Peter M. Bartek 2
#94 Peter Seitz 2 Mtu Aero Engines Ag
#95 Quinton Reed 2 Siemens Mobility Gmbh
#96 Randy Cloud 2 Preformed Line Products
#97 Randall G. Honeck 2 Extron
#98 Richard William Keller 2 Bnsf Railway
#99 Robert Hanczor 2 Piper Networks
#100 Rudy Rochefort 2 Thales Canada

Top Companies

Rank Company Patents
1 Siemens Mobility Gmbh 31
2 Transportation Ip Holdings 12
3 Bnsf Railway 11
#4 Mitsubishi Electric 11
#5 Trinity Rail Group 11
#6 Alstom Transport Technologies 8
#7 Amsted Rail Company 8
#8 Kawasaki Railcar Manufacturing Co. 8
#9 Autostore Technology As 7
#10 Gunderson 7
#11 Bombardier Transportation Gmbh 6
#12 Crrc Qingdao Sifang Co. 6
#13 Sst Systems 6
#14 Thales Canada 6
#15 Westinghouse Air Brake 6
#16 Byd Company Limited 5
#17 Clone667 5
#18 Poma 5
#19 Speedinnov 5
#20 C.D.L. Electric Company 4
#21 National Steel Car Limited 4
#22 Plasser & Theurer Export Von Bahnbaumaschinen Gmbh 4
#23 Siemens Mobility Austria Gmbh 4
#24 Knorr-Bremse Systeme Für Schienenfahrzeuge Gmbh 3
#25 Knoxville Locomotive Works 3
#26 Parallel Systems 3
#27 Beijing Jiaotong University 2
#28 Casco Signal 2
#29 Cavnue Technology 2
#30 Cooley Enterprises 2
#31 Crrc Nanjing Puzhen Co. 2
#32 Dellner Couplers Ab 2
#33 Ensco 2
#34 Faiveley Transport Amiens 2
#35 Hyperloop Technologies 2
#36 Ireco 2
#37 Jac Operations 2
#38 Leitner S.P.A. 2
#39 Metrom Rail 2
#40 Nomadd Desert Solar Solutions 2
#41 Piper Networks 2
#42 Preformed Line Products 2
#43 Progress Rail Locomotive 2
#44 Progress Rail Services 2
#45 Rail Vision 2
#46 Railway Equipment 2
#47 Rockwell Automation 2
#48 Safran Landing Systems 2
#49 Safran Landing Systems Canada 2
#50 Southwest Jiaotong University 2
#51 Thales Management & Services Deutschland Gmbh 2
#52 Trinity North American Freight Car 2
#53 Vestas Wind Systems A/S 2
#54 Apple 1
#55 Advanced Rail Energy Storage 1
#56 A. Stucki 1
#57 Balanced Engineering Solution 1
#58 Bentley Systems, Incorporated 1
#59 Bnsf Logistics 1
#60 Cattron North America 1
#61 China University Of Mining And Technology 1
#62 Crrc Qingdao Sifang Rolling Stock Research Institute Co. 1
#63 Crrc Qiqihar Rolling Stock Co. 1
#64 Crrc Tangshan Co. 1
#65 Crrc Zhuzhou Electric Locomotive Research Institute Co. 1
#66 Crrc Zhuzhou Locomotive Co. 1
#67 Csx Transportation 1
#68 Cubtek 1
#69 Faiveley Transport Italia S.P.A. 1
#70 Faiveley Transport Witten Gmbh 1
#71 Fugro Technology B.V. 1
#72 Hafco Foundry And Machine Company 1
#73 Harsco 1
#74 Harting Electric 1
#75 Herzog Railroad Services 1
#76 Hitachi 1
#77 Hitachi Rail Sts S.P.A. 1
#78 Icomera Ab 1
#79 Innova Patent Gmbh 1
#80 Kabushiki Kaisha Toshiba 1
#81 Knorr Brake Company 1
#82 Koito Electric Industries 1
#83 Korea Railroad Research Institute 1
#84 K-Technology Usa 1
#85 Liebherr-Transportation Systems Gmbh & Co. Kg 1
#86 Medela Holding Ag 1
#87 Miner Enterprises 1
#88 Mirle Automation 1
#89 Mitsubishi Heavy Industries Engineering 1
#90 Nevis Industries 1
#91 Omnitek Partners 1
#92 Pennsy 1
#93 Protran Technology 1
#94 Rolls-Royce Plc 1
#95 Schaeffler 1
#96 Süddeutsche Gelenkscheibenfabrik Gmbh & Co. Kg; 1
#97 Siemens Aktiengesellschaft 1
#98 Ssi Schäfer Automation Gmbh (At) 1
#99 Stc 1
#100 Strato 1