Nuclear technology Patent Leaders

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	Krishna P. Singh	190	Holtec International
2	Roderick A. Hyde	67	Intellectual Ventures
3	Lowell L. Wood, JR.	63	The Invention Science Fund I
#4	William Earl Russell, II	59	Ge-Hitachi Nuclear Energy Americas
#5	Motoo Aoyama	52	Hitachi
#6	Josef Schoening	51	Hochtemperatur-Reaktorbau Gmbh
#7	David Smith	50	Ge-Hitachi Nuclear Energy Americas
#8	Eric B. Johansson	50	GE
#9	Michael D. Heibel	49	Westinghouse Electric
#10	Olov Nylund	49	Abb Atom Ab
#11	Stephen J. Agace	48	Holtec International
#12	Muriel Y. Ishikawa	45	The Invention Science Fund I
#13	John F. Wilson	44	Westinghouse Electric
#14	Nathan P. Myhrvold	43	The Invention Science Fund I
#15	Bruce Matzner	42	GE
#16	Joshua C. Walter	41	Terrapower
#17	Robert K. Gjertsen	40	Westinghouse Electric
#18	Edward J. Lahoda	39	Westinghouse Electric
#19	Scott J. Shargots	37	Bwxt Mpower
#20	Charles Whitmer	36	Intellectual Ventures
#21	Eric P. Loewen	36	Ge-Hitachi Nuclear Energy Americas
#22	Paul Leblans	36	Agfa-Gevaert Nv
#23	Charles E. Ahlfeld	33	Terrapower
#24	William J. Bryan	33	Combustion Engineering
#25	Gerald A. Deaver	32	GE
#26	Jon D. McWhirter	32	Terrapower
#27	Thomas A. Weaver	32	The Invention Science Fund I
#28	George B. Zimmerman	31	Terrapower
#29	Michl W. Binderbauer	31	University of California
#30	Junichi Yamashita	30	Sony
#31	Kenji Takahashi	30	Fujitsu Limited
#32	David G. McAlees	29	Terrapower
#33	Grant Clark Jensen	29	GE
#34	John Geddes Erbes	29	GE
#35	John D. Malloy, III	28	Bwxt Mpower
#36	Clarence T. Tegreene	27	Intellectual Ventures
#37	John Rogers Gilleland	27	Terrapower
#38	Makoto Nagase	27	Seiko Epson
#39	Takashi Nakamura	27	Fujitsu Limited
#40	Bernd Eckardt	26	Siemens Aktiengesellschaft
#41	David Joseph Kropaczek	26	Global Nuclear Fuel-Americas
#42	Edmund E. DeMario	26	Westinghouse Electric
#43	Harold B. King	26	GE
#44	Jack T. Matsumoto	26	GE
#45	John D. Griffiths	26	Holtec International
#46	Norman Rostoker	26	University of California
#47	Robert E. Meuschke	26	Westinghouse Electric
#48	Matthew W. Ales	25	Bwxt Mpower
#49	Robert Bruce Elkins, II	25	Corning Cable Systems
#50	Alexander W. Harkness	24	Westinghouse Electric
#51	Cheon-Woo Kim	24	Korea Hydro & Nuclear Power Co.
#52	Claus Elter	24	Hochtemperatur-Reaktorbau Gmbh
#53	Jorge V. Carvajal	24	Westinghouse Electric
#54	Jose N. Reyes, Jr.	23	Nuscale Power
#55	John M. Shallenberger	23	Westinghouse Electric
#56	Makoto Kikuchi	23	Hitachi
#57	Stephen J. Ferlan	23	Westinghouse Electric
#58	Young Jin Kim	23	Samsung
#59	Albert J. Impink, Jr.	22	Westinghouse Electric
#60	Ashok Odedra	22	Terrapower
#61	Kazushige Ishida	22	Hitachi-Ge Nuclear Energy
#62	Larry E. Fennern	22	GE
#63	Renzo Takeda	22	Hitachi
#64	Satoshi Arakawa	22	Fujitsu Limited
#65	Hans-Joachim Lippert	21	Siemens Aktiengesellschaft
#66	Lewis A. Walton	21	Bwxt Mpower
#67	Michael J. Edwards	21	Bwxt Mpower
#68	Sadao Uchikawa	21	Hitachi
#69	John T. Groome	20	Nuscale Power
#70	Keung Koo Kim	20	Korea Atomic Energy Research Institute
#71	Kyung Ho Yoon	20	Korea Atomic Energy Research Institute
#72	Takashi Sato	20	Kabushiki Kaisha Toshiba
#73	Dong Seok Oh	19	Hyundai Motor
#74	Guy Desfontaines	19	Framatome & Cie.
#75	James A. Sparrow	19	Westinghouse Electric
#76	Luciano Veronesi	19	Westinghouse Electric
#77	Peng Xu	19	IBM
#78	Anselmo T. Cisneros, Jr.	18	Terrapower
#79	Douglas M. Gluntz	18	GE
#80	Jean-Paul Millot	18	Framatome & Cie.
#81	Kun-Woo Song	18	Korea Atomic Energy Research Institute
#82	Perng-Fei Gou	18	GE
#83	Robin D. Sprague	18	Ge-Hitachi Nuclear Energy Americas
#84	Sture Helmersson	18	Westinghouse Electric Sweden Ab
#85	Victoria Y.H. Wood	18	The Invention Science Fund I
#86	Yasunori Bessho	18	Hitachi
#87	Young In Kim	18	LG
#88	Adrian P. Wivagg	17	Combustion Engineering
#89	Boris Verman	17	Osmic
#90	Harry M. Ferrari	17	Westinghouse Electric
#91	Hans-Georg Schwiers	17	Hochtemperatur-Reaktorbau Gmbh
#92	Hideyuki Hosokawa	17	Hitachi-Ge Nuclear Energy
#93	Hyung Kyu Kim	17	Korea Atomic Energy Research Institute
#94	James B. Inman	17	Bwxt Nuclear Energy
#95	Joseph Rajkumar	17	Smr Inventec
#96	Junjiro Nakajima	17	Hitachi
#97	Katsuhiro Kohda	17	Fujitsu Limited
#98	Katsumi Ohsumi	17	Hitachi
#99	Kevan D. Weaver	17	Terrapower
#100	Licai Jiang	17	Rigaku

Top Companies

Rank ↑	Company ↕	Patents ↕
1	Westinghouse Electric	1,243
2	GE	908
3	Hitachi	406
#4	US Dept of Energy	372
#5	CEA	315
#6	Framatome	294
#7	Kabushiki Kaisha Toshiba	284
#8	Siemens Aktiengesellschaft	272
#9	Combustion Engineering	216
#10	Ge-Hitachi Nuclear Energy Americas	197
#11	Mitsubishi Electric	172
#12	Korea Atomic Energy Research Institute	171
#13	Holtec International	161
#14	Fujitsu Limited	128
#15	Terrapower	120
#16	Areva Np	118
#17	Kraftwerk Union	117
#18	British Nuclear Fuels Plc	101
#19	Korea Hydro & Nuclear Power Co.	97
#20	Unknown	90
#21	Global Nuclear Fuel-Americas	88
#22	Hitachi-Ge Nuclear Energy	83
#23	The Babcock & Wilcox	82
#24	Bwxt Mpower	81
#25	University of California	80
#26	Canon	77
#27	Compagnie Generale Des Matieres Nucleaires	76
#28	Nuscale Power	71
#29	Hochtemperatur-Reaktorbau Gmbh	70
#30	Framatome Anp	67
#31	Abb Atom Ab	64
#32	Doryokuro Kakunenryo Kaihatsu Jigyodan	62
#33	Deutsche Gesellschaft Fur Wiederaufarbeitung Von Kernbrennstoffen Mbh	58
#34	Agfa-Gevaert Nv	49
#35	Kernforschungsanlage Lulich Gesellschaft Mit Beschrankter Haftung	48
#36	Kepco Nuclear Fuel Co.	47
#37	Electric Power Research Institute	46
#38	Atomic Energy Of Canada Limited	44
#39	United Kingdom Atomic Energy Authority	44
#40	Kernforschungszentrum Karlsruhe Gmbh	43
#41	Mitsubishi Nuclear Fuel Co.	43
#42	Ab Asea-Atom	41
#43	Siemens Power Corporation	41
#44	Uchicago Argonne	41
#45	US Air Force	41
#46	U.S. Philips	41
#47	Framatome & Cie.	40
#48	Toshiba	40
#49	NASA	39
#50	Westinghouse Electric Sweden Ab	39
#51	Areva Gmbh	38
#52	Hitachi Engineering Co.	37
#53	Cogema	36
#54	Eastman Kodak	35
#55	Department Of Energy	33
#56	Konica Minolta Medical & Graphic	33
#57	E.I. Du Pont De Nemours And	32
#58	General Atomics	32
#59	Sandia	32
#60	Smr Inventec	32
#61	Siemens Medical Solutions Usa	30
#62	Battelle Memorial Institute	29
#63	MIT	29
#64	Tn International	29
#65	Battelle Energy Alliance	28
#66	Japan Atomic Energy Research Institute	28
#67	Varian Medical Systems	28
#68	Carl Zeiss Smt Gmbh	27
#69	Lockheed Martin	26
#70	Fujifilm	25
#71	Lawrence Livermore National Security	25
#72	The Boeing	25
#73	Ut-Battelle	25
#74	Asml Netherlands B.V.	24
#75	Hamamatsu Photonics K.K.	24
#76	Tae Technologies	24
#77	Tsinghua University	24
#78	Areva Nc	23
#79	B&W Fuel	23
#80	Philips	23
#81	Mallinckrodt	22
#82	Novatome	22
#83	Cogema -Compagnie Generale Des Matieres Nucleaires	21
#84	Koniniklijke Philips N.V.	21
#85	Rockwell Automation	21
#86	IBM	20
#87	3M	19
#88	Bwxt Advanced Technologies	19
#89	Gigaphoton	19
#90	ExxonMobil	19
#91	Samsung	19
#92	Bwxt Nuclear Energy	18
#93	Electricite De France	18
#94	Japan Nuclear Cycle Development Institute	18
#95	Kepco Engineering & Construction Company	18
#96	Nac International	18
#97	Nikon	18
#98	Nukem	18
#99	Shimadzu	18
#100	Westinghouse Atom Ab	18

Nuclear technology Patent Leaders All Time

Patents per Year

Top Inventors

Top Companies