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

Nuclear technology Patent Leaders in 2020 2020

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 22 Holtec International
2 Holloway H. Frost 7 IBM
3 Jorge V. Carvajal 7 Westinghouse Electric
#4 Lin Shao 7 Texas Thorium
#5 Michael D. Heibel 7 Westinghouse Electric
#6 Rodolfo Vaghetto 7 Texas Thorium
#7 Trevor D. Parker 7 Texas Thorium
#8 Yassin A. Hassan 7 Texas Thorium
#9 Keung Koo Kim 6 Korea Atomic Energy Research Institute
#10 Young In Kim 6 LG
#11 Edward J. Lahoda 5 Westinghouse Electric
#12 Eric P. Loewen 5 Ge-Hitachi Nuclear Energy Americas
#13 Hun Sik HAN 5 Korea Atomic Energy Research Institute
#14 Liping Deng 5 Omnivision Technologies
#15 Richard A. Muller 5 Deep Isolation
#16 Anselmo T. Cisneros, Jr. 4 Terrapower
#17 Charles Gregory Freeman 4 Terrapower
#18 David L. Major 4 Ge-Hitachi Nuclear Energy Americas
#19 Gerald A. Deaver 4 GE
#20 Jeffery F. Latkowski 4 Terrapower
#21 Joseph Rajkumar 4 Smr Inventec
#22 Kevin Kramer 4 Terrapower
#23 Luke D. Czerniak 4 Westinghouse Electric
#24 Mark W. Vose 4 Qsa Global
#25 Pavel Tsvetkov 4 Nugen
#26 Randy M. Brown 4 Ge-Hitachi Nuclear Energy Americas
#27 Scott J. Shargots 4 Bwxt Mpower
#28 Stephen K. Rhyne 4 Nugen
#29 Thomas L. Weaver 4 The Boeing
#30 Yasir Arafat 4 Westinghouse Electric
#31 Young Min Bae 4 Korea Atomic Energy Research Institute
#32 Alexander Sykora 3 Framatome
#33 Christopher J. Johns 3 Terrapower
#34 Elizabeth Muller 3 Deep Isolation
#35 Jae Joo Ha 3 Korea Atomic Energy Research Institute
#36 James L. Yankel 3 Westinghouse Electric
#37 Joonhyung Choi 3 Westinghouse Electric
#38 John D. Griffiths 3 Holtec International
#39 John D. Malloy, III 3 Bwxt Mpower
#40 Jon D. McWhirter 3 Terrapower
#41 Ju Hyeon Yoon 3 Korea Atomic Energy Research Institute
#42 Kevin J. Foley 3 Westinghouse Electric
#43 Kenneth A. Morgan 3 Ge-Hitachi Nuclear Energy Americas
#44 Kyung Jun KANG 3 Korea Atomic Energy Research Institute
#45 Lowell L. Wood, JR. 3 The Invention Science Fund I
#46 Matthew W. Ales 3 Bwxt Mpower
#47 Matthew D. McArdle 3 Westinghouse Electric
#48 Mark G. Shilton 3 Qsa Global
#49 Melissa M. Heagy 3 Westinghouse Electric
#50 Muriel Y. Ishikawa 3 The Invention Science Fund I
#51 Richard M. Springman 3 Holtec International
#52 Roderick A. Hyde 3 Intellectual Ventures
#53 Sanghoon Lee 3 Samsung
#54 Soo Jai SHIN 3 Korea Atomic Energy Research Institute
#55 Stephen J. Agace 3 Holtec International
#56 Suhn CHOI 3 Korea Atomic Energy Research Institute
#57 Tae Wan Kim 3 Samsung
#58 Thomas Fabian Richter 3 Framatome
#59 Adrian M. Mistreanu 2 Ge-Hitachi Nuclear Energy Americas
#60 Andreas Fenner 2 Medtronic
#61 Ashok Odedra 2 Terrapower
#62 Bassem S. El-Dasher 2 Lawrence Livermore National Security
#63 Brett J. Dooies 2 Ge-Hitachi Nuclear Energy Americas
#64 Brian S. Hunt 2 Ge-Hitachi Nuclear Energy Americas
#65 Brian C. Kelleher 2 Terrapower
#66 Bulent Alpay 2 Ge-Hitachi Nuclear Energy Americas
#67 Bum Kyoung Seo 2 Korea Atomic Energy Research Institute
#68 Charles R. Barrett 2 Westinghouse Electric
#69 Christer N. Dahlgren 2 Ge-Hitachi Nuclear Energy Americas
#70 Choonyong Lee 2 Doosan Heavy Industries & Construction Co.
#71 Chaeho Nam 2 Doosan Heavy Industries & Construction Co.
#72 Clarence T. Tegreene 2 Intellectual Ventures
#73 Colin F. Kelemen 2 Ge-Hitachi Nuclear Energy Americas
#74 Daniel Flowers 2 Terrapower
#75 Daniel Ingersoll 2 Nuscale Power
#76 David Pipes 2 Curium Us
#77 David A. Ruben 2 Medtronic
#78 David L. Stucker 2 Westinghouse Electric
#79 Francesco Venneri 2 Ultra Safe Nuclear
#80 Gosse Charles De Vries 2 Asml Netherlands B.V.
#81 Han-Kwang Nienhuys 2 Asml Netherlands B.V.
#82 Indresh Rampall 2 Holtec International
#83 James Edward Baciak 2 University of Florida
#84 Jeffrey L. Arndt 2 Westinghouse Electric
#85 Jeffrey J. Taylor 2 Westinghouse Electric
#86 Jin Seok Park 2 Samsung
#87 John S. Bennion 2 Ge-Hitachi Nuclear Energy Americas
#88 John L. Lyons 2 Westinghouse Electric
#89 Joseph Rajkumar 2 Holtec International
#90 Jose N. Reyes, Jr. 2 Nuscale Power
#91 Joshua C. Walter 2 Terrapower
#92 Junichi Nishitani 2 Mitsubishi Electric
#93 June Park 2 Auris Health
#94 Jun Shibuya 2 Mitsubishi Electric
#95 Jurie Van Wyk 2 Westinghouse Electric
#96 Ken Czerwinski 2 Terrapower
#97 Kenji Mashio 2 Mitsubishi Electric
#98 Kyu Man CHO 2 Industry-University Cooperation Foundation Hanyang University
#99 Lars Voss 2 Lawrence Livermore National Security
#100 Leila Jaafar 2 Framatome

Top Companies

Rank ↑ Company ↕ Patents ↕
1 Westinghouse Electric 32
2 Ge-Hitachi Nuclear Energy Americas 19
3 Holtec International 15
#4 Bwxt Mpower 13
#5 Terrapower 13
#6 Korea Atomic Energy Research Institute 11
#7 Framatome 10
#8 Nuscale Power 8
#9 Smr Inventec 8
#10 Texas Thorium 7
#11 CEA 6
#12 State Atomic Energy Corporation “Rosatom” Acts On Behalf Of The Russian Federation 6
#13 Deep Isolation 5
#14 Mitsubishi Electric 5
#15 Sichuan Xingzhi Zhihui Intellectual Property Operation Co. 5
#16 The Boeing 5
#17 Kabushiki Kaisha Toshiba 4
#18 Lawrence Livermore National Security 4
#19 Nugen 4
#20 Qsa Global 4
#21 Tokamak Energy 4
#22 Triad National Security 4
#23 Tsinghua University 4
#24 Asml Netherlands B.V. 3
#25 Battelle Energy Alliance 3
#26 Doosan Heavy Industries & Construction Co. 3
#27 Hitachi 3
#28 Hitachi-Ge Nuclear Energy 3
#29 Joint Stock Company “Akme-Engineering” 3
#30 Koniniklijke Philips N.V. 3
#31 Nuctech Company Limited 3
#32 Shanghai Nuclear Engineering Research & Design Institute Co. 3
#33 Ultra Safe Nuclear 3
#34 University of Florida 3
#35 Westinghouse Electric Sweden Ab 3
#36 Areva Np 2
#37 China General Nuclear Power Group 2
#38 Curium Us 2
#39 Electricite De France 2
#40 Fei 2
#41 Fraunhofer 2
#42 General Fusion 2
#43 Global Nuclear Fuel-Americas 2
#44 Hydromine Nuclear Energy S.A.R.L. 2
#45 Industry-University Cooperation Foundation Hanyang University 2
#46 Kepco Engineering & Construction Company 2
#47 Kla-Tencor 2
#48 Rigaku 2
#49 Secretary, Department Of Atomic Energy 2
#50 Siemens Healthcare Limited 2
#51 Société Technique Pour L'Energie Atomique 2
#52 Tae Technologies 2
#53 NASA 2
#54 Tn International 2
#55 Unknown 2
#56 Varian Medical Systems 2
#57 Viken Detection 2
#58 Medtronic 2
#59 Anritsu Infivis Co. 1
#60 Atomic Energy Of Canada Limited/Ènergie Atomique Du Canada Limitèe 1
#61 Australian Nuclear Science And Technology Organisation 1
#62 Avantech 1
#63 Battelle Memorial Institute 1
#64 Best Theratronics 1
#65 Board Of Supervisors Of Louisiana State University And Agricultural And Mechanical College 1
#66 Bwxt Canada 1
#67 Bwxt Nuclear Operations Group 1
#68 Caltech 1
#69 Ceradyne 1
#70 Cerium Laboratories 1
#71 China Nuclear Power Engineering Co. 1
#72 China Nuclear Power Technology Research Institute Co. 1
#73 City Labs 1
#74 Clemson University 1
#75 Coldquanta 1
#76 Continuum Dynamics 1
#77 Curtiss-Wright Flow Control 1
#78 Decision Sciences International 1
#79 Deutsches Elektronen-Synchrotron Desy 1
#80 Electric Power Research Institute 1
#81 Elekta Limited 1
#82 Euclid Techlabs 1
#83 Fortum Oyj 1
#84 Friedrich-Schiller-Universitat Jena 1
#85 Georgetown Rail Equipment 1
#86 Getinge La Calhene 1
#87 Grand Abyss 1
#88 H3D 1
#89 Hamamatsu Photonics K.K. 1
#90 Hitachi High-Tech Analytical Science Finland Oy 1
#91 Hitachi Zosen 1
#92 Ihi 1
#93 Illinois Tool Works 1
#94 Innoven Energy 1
#95 Institute Of Modern Physics, Chinese Academy Of Sciences 1
#96 Ion Beam Applications 1
#97 Jefferson Science Associates 1
#98 Joint Stock Company “Science And Innovations” 1
#99 Joint-Stock Company Scientific Research And Design Institute For Energy Technologies Atomproekt 1
#100 Kaneka 1