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Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
Home › Technologies › Nuclear technology

Nuclear technology Patent Leaders in 2021 2021

Primary CPC class G21 · Section G

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 427 patents in 2014.peak 4271996: 255 patents19961997: 253 patents1998: 322 patents1999: 264 patents19992000: 185 patents2001: 257 patents2002: 263 patents20022003: 272 patents2004: 233 patents2005: 205 patents20052006: 188 patents2007: 174 patents2008: 200 patents20082009: 201 patents2010: 217 patents2011: 194 patents20112012: 244 patents2013: 335 patents2014: 427 patents20142015: 353 patents2016: 344 patents2017: 388 patents20172018: 353 patents2019: 354 patents2020: 395 patents20202021: 296 patents2022: 357 patents2023: 254 patents20232024: 288 patents2025: 269 patents2025

Top Inventors

Rank ↑ Inventor ↕ Patents ↕ Primary Company ↕
1 Krishna P. Singh 12 Holtec International
2 Anselmo T. Cisneros, Jr. 5 Terrapower
3 Edward J. Lahoda 5 Westinghouse Electric
#4 Eric P. Loewen 5 Ge-Hitachi Nuclear Energy Americas
#5 Michael D. Heibel 5 Westinghouse Electric
#6 Henry Crichlow 4 —
#7 Peng Xu 4 IBM
#8 Seth Ryan Paul Strege 4 Ge-Hitachi Nuclear Energy Americas
#9 Alexey Glebovich Morozov 3 Thorium Power
#10 Andrew C. Whitten 3 Bwxt Mpower
#11 Blair P. Bromley 3 Atomic Energy Of Canada Limited
#12 David W. Webber 3 Ge-Hitachi Nuclear Energy Americas
#13 Jeffrey L. Arndt 3 Westinghouse Electric
#14 Jeffery F. Latkowski 3 Terrapower
#15 Jorge V. Carvajal 3 Westinghouse Electric
#16 Kevin Kramer 3 Terrapower
#17 Matthew W. Ales 3 Bwxt Mpower
#18 Maria E. Pfeffer 3 Ge-Hitachi Nuclear Energy Americas
#19 Michael J. Edwards 3 Bwxt Mpower
#20 Micah J. Hackett 3 Terrapower
#21 Richard A. Muller 3 Deep Isolation
#22 Robert L. Oelrich, Jr. 3 Westinghouse Electric
#23 Ryan Abbott 3 Terrapower
#24 Salvatore Moricca 3 Australian Nuclear Science And Technology Organisation
#25 Scott L. Pfeffer 3 Ge-Hitachi Nuclear Energy Americas
#26 Scott J. Shargots 3 Bwxt Mpower
#27 Sergey Mikhailovich Bashkirtsev 3 Thorium Power
#28 Tamas Liszkai 3 Nuscale Power
#29 Aaron Totemeier 2 Thorium Power
#30 Akintunde I. Akinwande 2 MIT
#31 Barbara Ulreich 2 —
#32 Betsy J. Guffey 2 —
#33 Berthold Klaus Paul Horn 2 MIT
#34 Brian Abeysekera 2 Best Theratronics
#35 Cathy Cottrell 2 Atomic Energy Of Canada Limited
#36 Charles W. BULLARD, II 2 Holtec International
#37 Charles Gregory Freeman 2 Terrapower
#38 Charles M. Rankin 2 ITRI
#39 George Barbastathis 2 MIT
#40 Glenn McRae 2 Best Theratronics
#41 Gregory Wayne Clarkson 2 Nuscale Power
#42 Han Gon KIM 2 Korea Hydro & Nuclear Power Co.
#43 Hui Un Ha 2 Korea Hydro & Nuclear Power Co.
#44 James B. Inman 2 Bwxt Nuclear Energy
#45 Jason Pottorf 2 Nuscale Power
#46 Jean Arsenault 2 —
#47 Jesse R. Cheatham, III 2 Terrapower
#48 Jean-Marc Inglese 2 Carestream Health
#49 John Linus Grimsich 2 Deep Isolation
#50 John D. Malloy, III 2 Bwxt Mpower
#51 Joseph Rajkumar 2 Smr Inventec
#52 Kevin J. Foley 2 Westinghouse Electric
#53 Lawrence D. Folts 2 —
#54 Lidia Matei 2 Best Theratronics
#55 Luciano Cinotti 2 Hydromine Nuclear Energy S.A.R.L.
#56 Mark G. Shilton 2 Qsa Global
#57 Martin van Staden 2 X-Energy
#58 Mark W. Vose 2 Qsa Global
#59 Michl W. Binderbauer 2 University of California
#60 Mustapha Boubcher 2 Atomic Energy Of Canada Limited
#61 Normand Boiteau 2 —
#62 Palvannanathan Ganesan 2 —
#63 Peter Cabauy 2 City Labs
#64 Peter Pappano 2 X-Energy
#65 Rajiv Gupta 2 —
#66 Rei Kimura 2 Kabushiki Kaisha Toshiba
#67 Richard Ray Johnson 2 Best Theratronics
#68 Richard C. Lanza 2 MIT
#69 Roger D. Ridgeway 2 Bwxt Mpower
#70 Ronald B. Sharpless 2 Koniniklijke Philips N.V.
#71 Rufino Ayala 2 Nuscale Power
#72 Sang H. Choi 2 NASA
#73 Samuel A. Cohen 2 Princeton University
#74 Sang Won Lee 2 Samsung
#75 Satoshi Wada 2 Canon
#76 Seshadri Jagannathan 2 Eastman Kodak
#77 Sermet Kuran 2 Atomic Energy Of Canada Limited
#78 Seung Jae Lee 2 Samsung
#79 Shawn C. Stafford 2 Westinghouse Electric
#80 Thierry Beck 2 CEA
#81 Thomas Koehler 2 Koniniklijke Philips N.V.
#82 Valery Host 2 Institut National Des Radioeléménts
#83 William Z. Gelbart 2 Best Theratronics
#84 Yonghee Kim 2 Samsung
#85 Zuoyi Zhang 2 Tsinghua University
#86 Abdullah M. Al-Otaibi 1 Saudi Arabian Oil
#87 Adam J. Duzik 1 —
#88 Adam Holifield 1 Ge-Hitachi Nuclear Energy Americas
#89 Adolf Inneman 1 Bede Scientific Instruments
#90 Akira Higuchi 1 Denso
#91 Akihiro Itou 1 Panasonic
#92 Akira Konoma 1 Hitachi-Ge Nuclear Energy
#93 Akihiro Matsubara 1 Sumitomo Electric Industries
#94 Akihiro Shin 1 Hitachi Zosen
#95 Akiyuki Tsuchiya 1 Hitachi-Ge Nuclear Energy
#96 Akinobu Yoshida 1 Tokyo Electric Power Company Holdings, Incorporated
#97 Ali Basheer Azeez 1 King Abdulaziz City For Science And Technology
#98 Alain Billard 1 Etienne Lacroix Tous Artifices S.A.
#99 Alexander Dunaevsky 1 Tae Technologies
#100 Aleksandr Grigoryevich Gerasimenko 1 Joint Stock Company “Atomenergoproekt”

Top Companies

Rank ↑ Company ↕ Patents ↕
1 Westinghouse Electric 22
2 Ge-Hitachi Nuclear Energy Americas 11
3 Bwxt Mpower 10
#4 Terrapower 10
#5 Holtec International 8
#6 Nuscale Power 7
#7 Atomic Energy Of Canada Limited 6
#8 CEA 6
#9 Framatome 6
#10 Kepco Nuclear Fuel Co. 6
#11 Smr Inventec 5
#12 Tae Technologies 5
#13 Koniniklijke Philips N.V. 4
#14 Korea Hydro & Nuclear Power Co. 4
#15 Atomic Energy Of Canada Limited/Ènergie Atomique Du Canada Limitèe 3
#16 Battelle Energy Alliance 3
#17 Deep Isolation 3
#18 Global Nuclear Fuel-Americas 3
#19 Kabushiki Kaisha Toshiba 3
#20 Korea Atomic Energy Research Institute 3
#21 Mitsubishi Electric 3
#22 Siemens Healthcare Limited 3
#23 State Atomic Energy Corporation “Rosatom” Acts On Behalf Of The Russian Federation 3
#24 NASA 3
#25 Thorium Power 3
#26 Toshiba Energy Systems & Solutions 3
#27 Asml Netherlands B.V. 2
#28 Best Theratronics 2
#29 Bwxt Nuclear Energy 2
#30 Electricite De France 2
#31 Hitachi-Ge Nuclear Energy 2
#32 Hitachi Zosen 2
#33 Hydromine Nuclear Energy S.A.R.L. 2
#34 Institut National Des Radioeléménts 2
#35 KAIST 2
#36 MIT 2
#37 National Technology & Engineering Solutions Of Sandia 2
#38 Qsa Global 2
#39 Société Technique Pour L'Energie Atomique 2
#40 The Boeing 2
#41 Princeton University 2
#42 Triad National Security 2
#43 Tsinghua University 2
#44 Unknown 2
#45 Westinghouse Electric Sweden Ab 2
#46 X-Energy 2
#47 GE 2
#48 3M 1
#49 Abb Power Grids Switzerland Ag 1
#50 American Isostatic Presses 1
#51 Analogic 1
#52 Analysis And Measurement Services 1
#53 Ariat Innovations 1
#54 Australian Nuclear Science And Technology Organisation 1
#55 Bracco Diagnostics 1
#56 Brilliant Light Power 1
#57 Bwxt Canada 1
#58 Bwxt Technical Services Group 1
#59 Carbon Free Holdings 1
#60 Central Research Institute Of Electric Power Industry 1
#61 City Labs 1
#62 Clear 1
#63 Curium Us 1
#64 Department Of Energy 1
#65 Dominion Engineering 1
#66 Eco Cath-Lab Systems 1
#67 Elbit Systems Of America 1
#68 Flowserve Management 1
#69 General Atomics 1
#70 General Fusion 1
#71 Georgia Tech Research 1
#72 Getinge La Calhene 1
#73 Hamamatsu Photonics K.K. 1
#74 Hitachi 1
#75 Howe Industries 1
#76 Ihi 1
#77 Imagine Scientific 1
#78 Itm Isotopen Technologien München Ag 1
#79 Japan Atomic Energy Agency 1
#80 Joint Stock Company “Akme-Engineering” 1
#81 Joint Stock Company “Atomenergoproekt” 1
#82 Joint Stock Company “Science And Innovations” 1
#83 Joint-Stock Company Scientific Research And Design Institute For Energy Technologies Atomproekt 1
#84 Jubilant Draximage 1
#85 Kepco Engineering & Construction Company 1
#86 King Abdulaziz City For Science And Technology 1
#87 Lantheus Medical Imaging 1
#88 Mitsubishi Chemical 1
#89 Neutron Therapeutics 1
#90 Nippon Chemical Industrial Co. 1
#91 Orano Med 1
#92 Osaka University 1
#93 Ottawa Heart Institute Research 1
#94 Our United 1
#95 Phoenix 1
#96 P M B 1
#97 Radiaction 1
#98 Rigaku 1
#99 Rolls-Royce Power Engineering Plc 1
#100 Rwe Power Aktiengesellschaft 1