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

Nuclear technology Patent Leaders in 2019 2019

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 14 Holtec International
2 Keung Koo Kim 6 Korea Atomic Energy Research Institute
3 Alfred Y. Wong 5 Alpha Ring International Limited
#4 Edward J. Lahoda 5 Westinghouse Electric
#5 Michl W. Binderbauer 5 University of California
#6 Tae Wan Kim 5 Samsung
#7 Young In Kim 5 LG
#8 Bernd Eckardt 4 Siemens Aktiengesellschaft
#9 Eric P. Loewen 4 Ge-Hitachi Nuclear Energy Americas
#10 Jae Joo Ha 4 Korea Atomic Energy Research Institute
#11 Jesse R. Cheatham, III 4 Terrapower
#12 Jose N. Reyes, Jr. 4 Nuscale Power
#13 Ju Hyeon Yoon 4 Korea Atomic Energy Research Institute
#14 Matthew W. Ales 4 Bwxt Mpower
#15 M. Sheldon Hansen 4 —
#16 Norbert Losch 4 Framatome
#17 Tamas Liszkai 4 Nuscale Power
#18 Charles L. Arvin 3 IBM
#19 Eusebio Garate 3 University of California
#20 John Rogers Gilleland 3 Terrapower
#21 Michael S. Gordon 3 IBM
#22 Norman Rostoker 3 University of California
#23 Ross Snuggerud 3 Nuscale Power
#24 Stephen J. Agace 3 Holtec International
#25 Yasir Arafat 3 Westinghouse Electric
#26 Aaron Totemeier 2 Thorium Power
#27 Alexander Thomas Burke 2 RTX (Raytheon)
#28 Alexey Glebovich Morozov 2 Thorium Power
#29 Aleksey Nikolaevich Storozhenko 2 Joint Stock Company “Akme-Engineering”
#30 Anselmo T. Cisneros, Jr. 2 Terrapower
#31 Artem N. Smirnov 2 Tae Technologies
#32 Benjamin Chazot 2 Areva Np
#33 Brett Campbell 2 Kurion
#34 Brett T. Goodyear 2 Bwxt Nuclear Operations Group
#35 Charles E. Ahlfeld 2 Terrapower
#36 Christopher J. Johns 2 Terrapower
#37 Cheon Tae Park 2 Korea Atomic Energy Research Institute
#38 Christian Sorel 2 CEA
#39 Charles Whitmer 2 Intellectual Ventures
#40 David Kingham 2 Tokamak Energy
#41 Dae Hee Lee 2 Samsung
#42 David G. McAlees 2 Terrapower
#43 Elodie Mery De Montigny 2 Areva Np
#44 Francesco Venneri 2 Ultra Safe Nuclear
#45 Frank Zehe 2 Framatome
#46 Gilles Bernier 2 CEA
#47 Gregory W. Morton 2 Analysis And Measurement Services
#48 Gustaaf Christian Brons 2 Malvern Panalytical B.V.
#49 Hashem M. Hashemian 2 Analysis And Measurement Services
#50 Han Ok Kang 2 Korea Atomic Energy Research Institute
#51 Hans Widegren 2 Westinghouse Electric Sweden Ab
#52 Hubert Salaün 2 Areva Np
#53 Isao Ueno 2 Clear
#54 Jae Seon Lee 2 KAIST
#55 Jason P. Mazzoccoli 2 Westinghouse Electric
#56 Jeffrey T. Dederer 2 Westinghouse Electric
#57 Jérémy Galpin 2 Areva Np
#58 Jesús Lacalle Bayo 2 Ingenieria Y Marketing, S.A.
#59 Jeffrey M. McCarty 2 Westinghouse Electric
#60 John D. Griffiths 2 Holtec International
#61 Jong Wook Kim 2 LG
#62 Jong Min Kim 2 Samsung
#63 Jon D. McWhirter 2 Terrapower
#64 Joseph Rajkumar 2 Smr Inventec
#65 Jurie Van Wyk 2 Westinghouse Electric
#66 Keiji Matsumoto 2 Canon
#67 Kevin J. Stambaugh 2 Bwxt Mpower
#68 Konstantin Dmitrievich Ivanov 2 Joint Stock Company “Akme-Engineering”
#69 Kyu Wan Kim 2 Kepco Engineering & Construction Company
#70 Lewis A. Walton 2 Bwxt Mpower
#71 Lowell L. Wood, JR. 2 The Invention Science Fund I
#72 Luke T. Perkins 2 Schlumberger Technology
#73 Manuel Miguirditchian 2 CEA
#74 Martin Pärnaste 2 GE
#75 Martin A. Stuart 2 —
#76 Michael J. Edwards 2 Bwxt Mpower
#77 Mikhail Gryaznevich 2 Tokamak Energy
#78 Michael D. Heibel 2 Westinghouse Electric
#79 Michael Keller 2 Dialog Semiconductor
#80 Michel Tuszewski 2 Tae Technologies
#81 Mitsuru Yokoyama 2 Konica Minolta
#82 Muriel Y. Ishikawa 2 The Invention Science Fund I
#83 Myoung Goo Lee 2 Kepco Engineering & Construction Company
#84 Nathan P. Myhrvold 2 The Invention Science Fund I
#85 Nathan J. Payne 2 Westinghouse Electric
#86 Nicolas Goreaud 2 Areva Np
#87 Nicholas Francis O'Neill 2 —
#88 Osao Sumita 2 Clear
#89 Paul K. DeSantis 2 Bwxt Nuclear Operations Group
#90 Peter Cabauy 2 City Labs
#91 Petronella Emerentiana Hegeman 2 Malvern Panalytical B.V.
#92 Petr Nikiforovich Martynov 2 Joint Stock Company “Akme-Engineering”
#93 Peter Wraight 2 Schlumberger Technology
#94 Peng Xu 2 IBM
#95 P. Harley Park 2 Terrapower
#96 Robert Burke 2 Micron
#97 Roderick A. Hyde 2 Intellectual Ventures
#98 Samuel Caylor 2 Analysis And Measurement Services
#99 Sang Gyoon Chang 2 Kepco Engineering & Construction Company
#100 Said Mirfaisovich Sharikpulov 2 Joint Stock Company “Akme-Engineering”

Top Companies

Rank ↑ Company ↕ Patents ↕
1 Westinghouse Electric 25
2 Ge-Hitachi Nuclear Energy Americas 14
3 Holtec International 13
#4 Nuscale Power 13
#5 Korea Atomic Energy Research Institute 10
#6 Framatome 8
#7 Terrapower 8
#8 Bwxt Mpower 7
#9 Mitsubishi Electric 7
#10 GE 6
#11 CEA 5
#12 Joint Stock Company “Akme-Engineering” 5
#13 Kepco Engineering & Construction Company 5
#14 Orano Cycle 5
#15 University of California 5
#16 U.S. Department Of Energy 5
#17 Westinghouse Electric Sweden Ab 5
#18 Areva Np 4
#19 Hitachi-Ge Nuclear Energy 4
#20 Kabushiki Kaisha Toshiba 4
#21 Tn International 4
#22 Uchicago Argonne 4
#23 Utah Green Energy Technologies 4
#24 Alpha Ring International Limited 3
#25 Atomic Energy Of Canada Limited 3
#26 Kepco Nuclear Fuel Co. 3
#27 Kurion 3
#28 Shimadzu 3
#29 Siemens Healthcare Limited 3
#30 Unknown 3
#31 IBM 3
#32 Analysis And Measurement Services 2
#33 Asml Netherlands B.V. 2
#34 China General Nuclear Power Group 2
#35 Clear 2
#36 Hitachi 2
#37 Ingenieria Y Marketing, S.A. 2
#38 Institute Of Nuclear Energy Research, Atomic Energy Council 2
#39 Konica Minolta 2
#40 Lantheus Medical Imaging 2
#41 Malvern Panalytical B.V. 2
#42 Mhe Technologies 2
#43 Qsa Global 2
#44 Riken 2
#45 Savannah River Nuclear Solutions 2
#46 Schlumberger Technology 2
#47 Tae Technologies 2
#48 Tokamak Energy 2
#49 Tsinghua University 2
#50 Varian Medical Systems 2
#51 Applied Materials 1
#52 Adaptix 1
#53 Advanced Accelerator Applications International Sa 1
#54 Advanced Reactor Concepts 1
#55 Analogic 1
#56 Atomic Energy Of Canada Limited/Ènergie Atomique Du Canada Limitèe 1
#57 Michigan State University 1
#58 Brookhaven Science Associates 1
#59 Bwxt Nuclear Operations Group 1
#60 Cammenga Company 1
#61 Carestream Health 1
#62 Changjiang Survey Planning Design And Research Co. 1
#63 China Nuclear Power Engineering Co. 1
#64 China Nuclear Power Technology Research Institute Co. 1
#65 City Labs 1
#66 Colorado School Of Mines 1
#67 Consolidated Nuclear Security 1
#68 Council Of Scientific And Industrial Research 1
#69 Crucible Intellectual Property 1
#70 Curium Us 1
#71 Dcns 1
#72 Deutsches Krebsforschungszentrum 1
#73 Ebara 1
#74 Ecole Polytechnique 1
#75 Electricite De France 1
#76 Electric Power Research Institute 1
#77 Electric Power Systems 1
#78 Enbw Energie Baden-Württemberg Ag 1
#79 Euclid Techlabs 1
#80 Fmi Medical Systems Co. 1
#81 Fujifilm 1
#82 Globalfoundries 1
#83 Global Nuclear Fuel-Americas 1
#84 Globe Composite Solutions 1
#85 Halliburton Energy Services 1
#86 Hamilton Sundstrand 1
#87 Hanseo University Academic Cooperation Foundation 1
#88 Imatrex 1
#89 Infineon Technologies Ag 1
#90 Information Systems Laboratories 1
#91 Innoven Energy 1
#92 Institut National Des Radioeléménts 1
#93 Ion Beam Applications 1
#94 Ir-Tec International 1
#95 Jefferson Science Associates 1
#96 Jtekt 1
#97 Kaercher Futuretech Gmbh 1
#98 Kaneka 1
#99 Konecranes Global 1
#100 Koniniklijke Philips N.V. 1