Railways Patent Leaders 2021 | Patent Leaderboard

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: 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025

Patents per Year

Top Inventors

Rank ↑	Inventor ↕	Patents ↕	Primary Company ↕
1	Fumikazu Kounoike	6	Kawasaki
2	Haiyang Yu	6	Dow Global Technologies
3	Takehiro Nishimura	6	Kawasaki
#4	Thierry Le Moigne	6	Aktiebolaget Skf
#5	Yoshi Sato	6	Kawasaki
#6	Yukitaka Taga	6	Kawasaki
#7	Gautier Jenart	5	Aktiebolaget Skf
#8	Honglei TIAN	5	Crrc Qingdao Sifang Co.
#9	Keiichiro Kamura	5	Kawasaki
#10	Ludovic Fenayon	5	Aktiebolaget Skf
#11	Peter M. Bartek	5	—
#12	Takaya Ono	5	Kawasaki
#13	Ajith Kuttannair Kumar	4	GE
#14	Atsushi Takami	4	Mitsubishi Electric
#15	Harry Kirk Mathews, Jr.	4	GE
#16	Jared Klineman Cooper	4	GE
#17	Jeffrey Michael Fries	4	Alstom Transport Technologies
#18	Jerry W. Vande Sande	4	Trinity North American Freight Car
#19	Kenneth W. Huck	4	Trinity North American Freight Car
#20	Lin Ren	4	Byd Company Limited
#21	Mitchell Beard	4	Palantir Technologies
#22	Tomonori Itagaki	4	Kyosan Electric Mfg. Co.
#23	Anju Bind	3	GE
#24	Andrew J. Morin	3	Standard Car Truck
#25	Chunhai Gao	3	Traffic Control Technology Co.
#26	Daniel Filion	3	—
#27	Dattaraj Jagdish Rao	3	GE
#28	Emmanuel KONDYRA	3	Alstom Transport Technologies
#29	Fanghong Peng	3	Byd Company Limited
#30	Giuseppe Conte	3	General Motors
#31	Hannes Peer	3	Siemens Mobility Gmbh
#32	Hao Zeng	3	Byd Company Limited
#33	James D. Brooks	3	GE
#34	James Robert Mischler	3	GE
#35	Jeremy Jovenall	3	Cattron North America
#36	Jeffrey B. Skweres	3	—
#37	Jerry Wade Specht	3	Bnsf Railway
#38	Joseph Forrest Noffsinger	3	GE
#39	Junjie Liu	3	Byd Company Limited
#40	Kenji Mizuno	3	Kyosan Electric Mfg. Co.
#41	Kent Robert Shue	3	Bnsf Railway
#42	Kyle R. Coston	3	Trinity Rail Group
#43	Longxi Liu	3	Crrc Qingdao Sifang Co.
#44	Masashi Asuka	3	Mitsubishi Electric
#45	Masayuki Mitsue	3	Kawasaki
#46	Manuel Tavares	3	Pennsy
#47	Nidhi Naithani	3	GE
#48	Ralph E. Young	3	Bnsf Railway
#49	Robert Erik Grip	3	The Boeing
#50	Shaun Richmond	3	Thrall Car Manufacturing
#51	Sreyashi Dey Chaki	3	GE
#52	Tamotsu Yokoyama	3	Kyosan Electric Mfg. Co.
#53	Toshifumi Nishi	3	Kyosan Electric Mfg. Co.
#54	Wataru Tsujita	3	Mitsubishi Electric
#55	William Cherrick Schoonmaker	3	GE
#56	Yukihiro Sano	3	Sony
#57	Zachary Ryan Brook	3	Pennsy
#58	Aaron Stern	2	Pennsy
#59	Adrian Gorski	2	GE
#60	Aiqin TIAN	2	Crrc Qingdao Sifang Co.
#61	Akihisa Kawauchi	2	Mitsubishi Electric
#62	Alexander Pinkerton	2	Aktiebolaget Skf
#63	Anthony C. Scoville	2	Sst Systems
#64	Andre Stojc	2	—
#65	Anders Westman	2	Dellner Couplers Ab
#66	Badar K. Khan	2	Siemens Mobility Gmbh
#67	Baolei Wang	2	Asclepius (Suzhou) Technology Company Group Co.
#68	Bo SONG	2	Crrc Qingdao Sifang Co.
#69	Brant R. McGhee	2	Trinity North American Freight Car
#70	Bret Dwayne Worden	2	GE
#71	Carlos Del Pozo	2	Siemens Mobility Gmbh
#72	Caglar Ozerdim	2	Trinity North American Freight Car
#73	Cesar Domingos	2	Transportation Ip Holdings
#74	Chuqiang Tang	2	Crrc Yangtze Group Co.
#75	Chaoquan Tang	2	China University Of Mining And Technology
#76	Corey Dash	2	Focused Technology Solutions
#77	David Allen Eldredge	2	GE
#78	Daolin Li	2	Byd Company Limited
#79	Daniel Edward Loringer	2	GE
#80	David D. Van Dorpe	2	Rockwell Automation
#81	Donghua Wu	2	Crrc Qingdao Sifang Co.
#82	Fan Jiang	2	China University Of Mining And Technology
#83	Fengwei Liu	2	Huawei
#84	Gary William Mason	2	GE
#85	Glenn Robert Shaffer	2	GE
#86	Gongbo Zhou	2	China University Of Mining And Technology
#87	Guenther Proell	2	Siemens Mobility Gmbh
#88	Haizhi Yu	2	Crrc Qingdao Sifang Co.
#89	Hiroyuki Kono	2	Mitsubishi Electric
#90	Hideki Kubo	2	Canon
#91	Hong Li	2	Crrc Qingdao Sifang Co.
#92	Hongwei Tang	2	China University Of Mining And Technology
#93	Igor Abrosimov	2	Acuid Corporation (Guernsey) Limited
#94	James L. Fenske	2	—
#95	James A. Oswald	2	—
#96	Jeffrey D. Kernwein	2	—
#97	Jens-Harro Oechsner	2	Siemens Aktiengesellschaft
#98	Jerome Stubler	2	Freyssinet International (Stup)
#99	Jianying LIANG	2	Crrc Qingdao Sifang Co.
#100	Jingjun Zhang	2	GE

Top Companies

Rank ↑	Company ↕	Patents ↕
1	Siemens Mobility Gmbh	30
2	Transportation Ip Holdings	30
3	Westinghouse Air Brake	17
#4	Alstom Transport Technologies	15
#5	Kawasaki	15
#6	Mitsubishi Electric	13
#7	Crrc Qingdao Sifang Co.	12
#8	Aktiebolaget Skf	8
#9	Bnsf Railway	7
#10	Trinity Rail Group	7
#11	Bombardier Transportation Gmbh	6
#12	Byd Company Limited	6
#13	Siemens Mobility Austria Gmbh	5
#14	Standard Car Truck	5
#15	Amsted Rail Company	4
#16	Harsco	4
#17	Kyosan Electric Mfg. Co.	4
#18	Leitner S.P.A.	4
#19	Cattron North America	3
#20	Crrc Qingdao Sifang Rolling Stock Research Institute Co.	3
#21	Gunderson	3
#22	Hitachi	3
#23	Murata Machinery	3
#24	Pennsy	3
#25	Protran Technology	3
#26	The Boeing	3
#27	Traffic Control Technology Co.	3
#28	Trinity North American Freight Car	3
#29	Unknown	3
#30	China University Of Mining And Technology	2
#31	Crrc Tangshan Co.	2
#32	Crrc Yangtze Group Co.	2
#33	Daifuku Co.	2
#34	Dellner Couplers Ab	2
#35	Hübner Gmbh & Co. Kg	2
#36	Hitachi Rail Sts Usa	2
#37	Innova Patent Gmbh	2
#38	International Electronic Machines	2
#39	Liebherr-Transportation Systems Gmbh & Co. Kg	2
#40	Mitsubishi Heavy Industries Engineering	2
#41	Rail Vision	2
#42	Rockwell Automation	2
#43	Sperry Rail	2
#44	Sst Systems	2
#45	Stadler Rail Ag	2
#46	Strato	2
#47	Thales Management & Services Deutschland Gmbh	2
#48	The Island Radar	2
#49	Toshiba Digital Solutions	2
#50	IBM	2
#51	Panasonic	2
#52	Avante International Technology	1
#53	Bayer Cropscience	1
#54	Bnsf Logistics	1
#55	Carrier	1
#56	Central Japan Railway Comany	1
#57	Clone667	1
#58	Cngmotive	1
#59	Crrc Nanjing Puzhen Co.	1
#60	East China Jiaotong University	1
#61	Eaton Intelligent Power Limited	1
#62	Enersul	1
#63	Ensco	1
#64	Florida Institute Of Technology	1
#65	Globiz Co.	1
#66	Glydways	1
#67	Grow Solutions Tech	1
#68	Hdr	1
#69	Hitachi Kokusai Electric	1
#70	Hutchinson	1
#71	Hyperloop Technologies	1
#72	Icomera Ab	1
#73	Ireco	1
#74	Italdesign Giugiaro S.P.A.	1
#75	Japan Petroleum Exploration Co.	1
#76	Kabushiki Kaisha Toshiba	1
#77	Knorr-Bremse Gesellschaft Mit Beschränkter Haftung	1
#78	Knorr-Bremse Systeme Für Schienenfahrzeuge Gmbh	1
#79	Korea Railroad Research Institute	1
#80	L.B. Foster Rail Technologies	1
#81	Liebherr-Aerospace Toulouse Sas	1
#82	Loram Maintenance Of Way	1
#83	Mcconway & Torley	1
#84	Mi-Jack Products	1
#85	Mitsubishi Electric	1
#86	Nabtesco	1
#87	National Railroad Passenger	1
#88	National Steel Car Limited	1
#89	Optasense Holdings Limited	1
#90	Poma	1
#91	Qingdao University Of Technology	1
#92	Railserve	1
#93	Robel Bahnbaumaschinen Gmbh	1
#94	Rolls-Royce Plc	1
#95	Sejin-Igb Co.	1
#96	Sharp Kabushiki Kaisha	1
#97	Speedinnov	1
#98	Sumitomo Riko Company Limited	1
#99	Taiyuan University Of Technology	1
#100	Televic Rail Nv	1

Railways Patent Leaders in 2021 2021

Patents per Year

Top Inventors

Top Companies