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

Nuclear technology Patent Leaders in 2023 2023

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 11 Holtec International
2 Cheon-Woo Kim 9 Korea Hydro & Nuclear Power Co.
3 Seok-Ju Hwang 7 Korea Hydro & Nuclear Power Co.
#4 Young Hwan Hwang 7 Korea Hydro & Nuclear Power Co.
#5 Michael D. Heibel 5 Westinghouse Electric
#6 Mi-Hyun Lee 5 Samsung
#7 Ju-Young Yoon 4 Samsung
#8 Yuriy Aleshin 4 Westinghouse Electric
#9 Anselmo T. Cisneros, Jr. 3 Terrapower
#10 Austin Lo 3 —
#11 Benjamin D. Fisher 3 Bwxt Advanced Technologies
#12 Charles Gregory Freeman 3 Terrapower
#13 Craig D. GRAMLICH 3 Bwxt Advanced Technologies
#14 James B. Inman 3 Bwxt Nuclear Energy
#15 Joshua J. Bergman 3 Bwxt Nuclear Energy
#16 John D. Griffiths 3 Holtec International
#17 Jonathan Witter 3 Capital One Services
#18 Sang H. Choi 3 NASA
#19 Stuart Kellner 3 Westinghouse Electric
#20 Thomas G. Onderwater 3 Bwxt Isotope Technology Group
#21 Adam J. Duzik 2 —
#22 Alex Levinsky 2 Westinghouse Electric
#23 Alexandre MICHAU 2 CEA
#24 Aleksandr Stalevich SIDOROV 2 Joint Stock Company “Atomenergoproekt”
#25 Anthony J. Mastopietro 2 Westinghouse Electric
#26 Azat Yumadilovich Galimov 2 Nuscale Power
#27 Brian Regna 2 Curium Us
#28 Byeonghee Lee 2 Korea Atomic Energy Research Institute
#29 Christer N. Dahlgren 2 Ge-Hitachi Nuclear Energy Americas
#30 Craig Brunkhorst 2 Curium Us
#31 Danny Galicki 2 Bwxt Nuclear Energy
#32 David H. Hinds 2 Ge-Hitachi Nuclear Energy Americas
#33 David L. Major 2 Ge-Hitachi Nuclear Energy Americas
#34 David Pipes 2 Curium Us
#35 Derek Bass 2 Ge-Hitachi Nuclear Energy Americas
#36 Dennis M. Bushnell 2 —
#37 Eli Moll 2 Shine Technologies
#38 Eric A. Barringer 2 Ceramics Process Systems
#39 Eric M. Benacquista 2 Westinghouse Electric
#40 Etienne LEFORT 2 Jubilant Draximage
#41 Evan Sengbusch 2 Phoenix
#42 Fernando Lomello 2 CEA
#43 Frederick Botha 2 Nuscale Power
#44 Francis Maury 2 CEA
#45 Frédéric SCHUSTER 2 CEA
#46 George C. Carver 2 Nac International
#47 Hanok Kang 2 Korea Atomic Energy Research Institute
#48 Jackson Keppen 2 Nuscale Power
#49 Jeffrey L. Arndt 2 Westinghouse Electric
#50 Jeremy L. GUSTAFSON 2 Bwxt Nuclear Energy
#51 Jeffery F. Latkowski 2 Terrapower
#52 Jihan Chun 2 Korea Atomic Energy Research Institute
#53 Jin Ho Song 2 Korea Atomic Energy Research Institute
#54 Jorge V. Carvajal 2 Westinghouse Electric
#55 John T. Groome 2 Nuscale Power
#56 Jose N. Reyes, Jr. 2 Nuscale Power
#57 John E. Truax 2 Terrapower
#58 Kevin Kramer 2 Terrapower
#59 Kenneth A. Morgan 2 Ge-Hitachi Nuclear Energy Americas
#60 Kwang Soon Ha 2 Korea Atomic Energy Research Institute
#61 Kyungjun Kang 2 Korea Atomic Energy Research Institute
#62 Lauren Radford 2 Curium Us
#63 Matt Ales 2 Bwxt Nuclear Energy
#64 Matt Krecicki 2 Bwxt Nuclear Energy
#65 Michel Brun 2 Société Technique Pour L'Energie Atomique
#66 Mikhail Yuryevich Kudryavtsev 2 State Atomic Energy Corporation “Rosatom” Acts On Behalf Of The Russian Federation
#67 Michel Pons 2 CEA
#68 Mihail Aleksandrovich Roshchin 2 Joint Stock Company “Atomenergoproekt”
#69 Pavel Hejzlar 2 Terrapower
#70 Raphaël Boichot 2 CEA
#71 Randy M. Brown 2 Ge-Hitachi Nuclear Energy Americas
#72 Richard A. Muller 2 Deep Isolation
#73 Robert A. Corbin 2 Terrapower
#74 Ross Radel 2 Phoenix
#75 Robert William Riddoch 2 Jubilant Draximage
#76 Roger D. Ridgeway 2 Bwxt Mpower
#77 Ronald B. Sharpless 2 Koniniklijke Philips N.V.
#78 Russell R. Jensen 2 Bwxt Nuclear Energy
#79 Ryan T. Swanson 2 Bwxt Advanced Technologies
#80 Seung Jae Lee 2 Samsung
#81 Shawn C. Stafford 2 Westinghouse Electric
#82 Sung-Hoon Hong 2 Samsung
#83 Sung-Il Kim 2 Samsung
#84 Tatyana Yaropolkovna Dzbanovskaya 2 Joint Stock Company “Atomenergoproekt”
#85 William Earl Russell, II 2 Ge-Hitachi Nuclear Energy Americas
#86 William Uhland 2 Curium Us
#87 Yong Mann Song 2 Korea Atomic Energy Research Institute
#88 Abdellatif M. Yacout 1 Uchicago Argonne
#89 ADAM S. GOLDBERG 1 Unknown
#90 Adrian M. Mistreanu 1 Ge-Hitachi Nuclear Energy Americas
#91 Adrian D. Nunn 1 Bracco International Bv
#92 Ako ISHIHARA 1 The University Of Chicago
#93 Akimitsu KANDA 1 Osaka University
#94 Ali A. Abbasi 1 Unknown
#95 Alain Grossetete 1 Areva Np
#96 Alexander Michalik 1 Rolls-Royce North America
#97 Alexey Glebovich Morozov 1 Thorium Power
#98 Alessandro PANTANO 1 CEA
#99 Alex Renner 1 Oklo
#100 Aleksey Borisovich Shevchenko 1 State Atomic Energy Corporation “Rosatom” Acts On Behalf Of The Russian Federation

Top Companies

Rank ↑ Company ↕ Patents ↕
1 Westinghouse Electric 21
2 Holtec International 11
3 Ge-Hitachi Nuclear Energy Americas 10
#4 Korea Hydro & Nuclear Power Co. 10
#5 Terrapower 10
#6 Korea Atomic Energy Research Institute 8
#7 Nuscale Power 7
#8 Framatome 5
#9 Unknown 5
#10 Bwxt Advanced Technologies 4
#11 CEA 4
#12 NASA 4
#13 Battelle Memorial Institute 3
#14 Bwxt Mpower 3
#15 Bwxt Nuclear Energy 3
#16 Jubilant Draximage 3
#17 Kepco Nuclear Fuel Co. 3
#18 King Abdullah City For Atomic & Renewable Energy (K.A. Care) 3
#19 Lawrence Livermore National Security 3
#20 Shanghai United Imaging Healthcare Co. 3
#21 Shine Technologies 3
#22 State Atomic Energy Corporation “Rosatom” Acts On Behalf Of The Russian Federation 3
#23 Battelle Energy Alliance 2
#24 Bwxt Isotope Technology Group 2
#25 Curium Us 2
#26 Deep Isolation 2
#27 Hitachi-Ge Nuclear Energy 2
#28 Joint Stock Company “Atomenergoproekt” 2
#29 Mitsubishi Electric 2
#30 Nac International 2
#31 National Technology & Engineering Solutions Of Sandia 2
#32 Riken 2
#33 Société Technique Pour L'Energie Atomique 2
#34 Uchicago Argonne 2
#35 Ultra Safe Nuclear 2
#36 Ut-Battelle 2
#37 American Ceramic Technology 1
#38 Arizona Board Of Regents For And On Behalf Of Arizona State University 1
#39 Asml Netherlands B.V. 1
#40 Atomic Energy Of Canada Limited/Ènergie Atomique Du Canada Limitèe 1
#41 Battelle Savannah River Alliance 1
#42 Bayer Healthcare 1
#43 Bracco Diagnostics 1
#44 Brilliant Light Power 1
#45 Bwxt Canada 1
#46 Carbon Free Holdings 1
#47 Carl Zeiss Smt Gmbh 1
#48 Carl Zeiss X-Ray Microscopy 1
#49 CNRS 1
#50 Chang'An University 1
#51 City Labs 1
#52 Coldquanta 1
#53 Contemporary Amperex Technology Co., Limited 1
#54 Corning Incorporated 1
#55 Council Of Scientific And Industrial Research An Indian Registered Body Incorporated Under The Regn. Of Soc. Act (Act Xxi Of 1860) 1
#56 Dana-Farber Cancer Institute 1
#57 Doosan Enerbility Co. 1
#58 Electricite De France 1
#59 Empyrean Medical Systems 1
#60 Esol 1
#61 Focus-Ebeam Technology (Beijing) Co. 1
#62 Giftedness And Creativity 1
#63 Global Energy Research Associates 1
#64 Global Nuclear Fuel-Americas 1
#65 Gns Gesellschafft Fuer Nuklear-Service Mbh 1
#66 US Dept of Commerce 1
#67 Hirosaki University 1
#68 Howe Industries 1
#69 Hunan University 1
#70 Innosense 1
#71 Ion Beam Applications 1
#72 Japan Atomic Energy Agency 1
#73 Joint Stock Company “Science And Innovations” 1
#74 Kaneka 1
#75 Kansas State University 1
#76 Kepco Engineering & Construction Company 1
#77 King Saud University 1
#78 MIT 1
#79 Medi-Physics 1
#80 Moxtek 1
#81 Nanyang Technological University 1
#82 NTT 1
#83 Oklo 1
#84 Orano Ds—Démantèlement Et Services 1
#85 Osaka University 1
#86 Ottawa Heart Institute Research 1
#87 Pactec 1
#88 Paul Scherrer Institut 1
#89 Polynt Composites France 1
#90 Qsa Global 1
#91 Radiaction 1
#92 Rad Technology Medical Systems 1
#93 Rolls-Royce North America 1
#94 Schaeffler 1
#95 Shanghai Nuclear Engineering Research & Design Institute Co. 1
#96 Shimadzu 1
#97 Stemrad 1
#98 Strong Force Iot Portfolio 2016 1
#99 Sumitomo Heavy Industries 1
#100 Tae Technologies 1