{"@context": "https://schema.org", "@type": "BreadcrumbList", "itemListElement": [{"@type": "ListItem", "position": 1, "name": "Home", "item": "https://www.patentleaderboard.com/"}, {"@type": "ListItem", "position": 2, "name": "Technologies", "item": "https://www.patentleaderboard.com/technologies"}, {"@type": "ListItem", "position": 3, "name": "Nuclear technology", "item": "https://www.patentleaderboard.com/technology/nuclear-technology"}]}
Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
Home › Technologies › Nuclear technology

Nuclear technology Patent Leaders in 2022 2022

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 18 Holtec International
2 Michael D. Heibel 6 Westinghouse Electric
3 James B. Inman 5 Bwxt Nuclear Energy
#4 Alfred Y. Wong 4 Alpha Ring International Limited
#5 Benjamin D. Fisher 4 Bwxt Advanced Technologies
#6 Cheon-Woo Kim 4 Korea Hydro & Nuclear Power Co.
#7 Charles C. Rinzler 4 Foro Energy
#8 David A. Woodbury 4 Alpha Ring International Limited
#9 Eric P. Loewen 4 Ge-Hitachi Nuclear Energy Americas
#10 Henry Crichlow 4 —
#11 Jeffery F. Latkowski 4 Terrapower
#12 Jorge V. Carvajal 4 Westinghouse Electric
#13 John D. Griffiths 4 Holtec International
#14 Jon D. McWhirter 4 Terrapower
#15 Salvatore Moricca 4 Australian Nuclear Science And Technology Organisation
#16 Simon Middleburgh 4 Westinghouse Electric Sweden Ab
#17 Thomas G. Onderwater 4 Bwxt Isotope Technology Group
#18 Young Hwan Hwang 4 Korea Hydro & Nuclear Power Co.
#19 Adrian M. Mistreanu 3 Ge-Hitachi Nuclear Energy Americas
#20 Allyson Callaway 3 Nuscale Power
#21 Aleksandr Stalevich SIDOROV 3 Joint Stock Company “Atomenergoproekt”
#22 Anselmo T. Cisneros, Jr. 3 Terrapower
#23 Ben Bristol 3 Nuscale Power
#24 Claudio Filippone 3 Carbon Free Holdings
#25 Craig D. GRAMLICH 3 Bwxt Advanced Technologies
#26 David L. Major 3 Ge-Hitachi Nuclear Energy Americas
#27 Edward J. Lahoda 3 Westinghouse Electric
#28 Gerald A. Deaver 3 GE
#29 Kevin Kramer 3 Terrapower
#30 Kenneth Rooks 3 Nuscale Power
#31 Larry Linik 3 Nuscale Power
#32 Luciano Cinotti 3 Hydromine Nuclear Energy S.A.R.L.
#33 Randy M. Brown 3 Ge-Hitachi Nuclear Energy Americas
#34 Robert C. Petroski 3 Intellectual Ventures
#35 Scott J. Shargots 3 Bwxt Mpower
#36 Seok-Ju Hwang 3 Korea Hydro & Nuclear Power Co.
#37 Youngin Kim 3 Korea Atomic Energy Research Institute
#38 Aleksey Dmitrievich Krotov 2 Joint Stock Company “Science And Innovations”
#39 Anthony J. Mastopietro 2 Westinghouse Electric
#40 Ashok Odedra 2 Terrapower
#41 Bassem S. El-Dasher 2 Lawrence Livermore National Security
#42 Ba Leum Kim 2 Kepco Nuclear Fuel Co.
#43 Bonghyun CHO 2 King Abdullah City For Atomic & Renewable Energy (K.A. Care)
#44 Brian S. Hunt 2 Ge-Hitachi Nuclear Energy Americas
#45 Brian C. Kelleher 2 Terrapower
#46 Charles Russell Buchanan 2 Siemens Medical Solutions Usa
#47 Cheongbong CHANG 2 King Abdullah City For Atomic & Renewable Energy (K.A. Care)
#48 Charles Gregory Freeman 2 Terrapower
#49 Christian Topf 2 Framatome
#50 Daniel Flowers 2 Terrapower
#51 David H. Hinds 2 Ge-Hitachi Nuclear Energy Americas
#52 David Bruce Rhodes 2 Atomic Energy Of Canada Limited
#53 David A. Rotsch 2 Uchicago Argonne
#54 Dong Seok Kim 2 LG
#55 Dong-Joo Kim 2 Korea Atomic Energy Research Institute
#56 Eric M. Benacquista 2 Westinghouse Electric
#57 Eric W. Cornell 2 Innoven Energy
#58 Eric Van Abel 2 Shine Technologies
#59 Fumikazu Ogata 2 Mitsubishi Electric
#60 Gary W. Neeley 2 Bwxt Advanced Technologies
#61 George C. Carver 2 Nac International
#62 Gilles Andre Poyaud 2 Areva Np
#63 Gideon Waterman 2 Stemrad
#64 Gregory Piefer 2 Shine Technologies
#65 Hunsik Han 2 King Abdullah City For Atomic & Renewable Energy (K.A. Care)
#66 HYUNJUN CHO 2 Samsung
#67 Indresh Rampall 2 Holtec International
#68 James J. Hamill 2 Siemens Medical Solutions Usa
#69 Jae Ho Yang 2 Korea Atomic Energy Research Institute
#70 Jeffrey L. Arndt 2 Westinghouse Electric
#71 Jeffrey M. McCarty 2 Westinghouse Electric
#72 Jerry A. Nolen, Jr. 2 Uchicago Argonne
#73 Jinglan Han 2 —
#74 Jin Seok Park 2 Samsung
#75 Joshua J. Bergman 2 Bwxt Nuclear Energy
#76 Joo Hong Chun 2 Kepco Nuclear Fuel Co.
#77 John Rogers Gilleland 2 Terrapower
#78 Joo Hyun Kang 2 Korea Institute Of Radiological & Medical Sciences
#79 John D. Malloy, III 2 Bwxt Mpower
#80 Joohyung MOON 2 Korea Atomic Energy Research Institute
#81 Joshua C. Walter 2 Terrapower
#82 Jong Sung Yoo 2 Kepco Nuclear Fuel Co.
#83 Junewoo Kee 2 King Abdullah City For Atomic & Renewable Energy (K.A. Care)
#84 Julius M. Ullmann 2 Bwxt Mpower
#85 Ju-Young Yoon 2 Samsung
#86 Ken Czerwinski 2 Terrapower
#87 Kenneth A. Morgan 2 Ge-Hitachi Nuclear Energy Americas
#88 Koichi Tanimoto 2 Mitsubishi Electric
#89 Kyo Chul Lee 2 Korea Institute Of Radiological & Medical Sciences
#90 Lars Hallstadius 2 Westinghouse Electric Sweden Ab
#91 Lewis A. Walton 2 Bwxt Mpower
#92 Liyao Sun 2 Beijing Dajia Internet Information Technology Co.
#93 Luca MACIOCCO 2 Advanced Accelerator Applications Sa
#94 Luis Sempere Belda 2 —
#95 Mark A. Havstad 2 Terrapower
#96 Mary W. Johnson 2 Bwxt Mpower
#97 Mathew T. Kinlaw 2 Battelle Energy Alliance
#98 Matthew J. O'Hara 2 Battelle Memorial Institute
#99 Mattias Puide 2 Seco Tools Ab
#100 Mathew S. Snow 2 Battelle Energy Alliance

Top Companies

Rank ↑ Company ↕ Patents ↕
1 Westinghouse Electric 25
2 Ge-Hitachi Nuclear Energy Americas 23
3 Holtec International 17
#4 Framatome 12
#5 Korea Atomic Energy Research Institute 11
#6 Terrapower 9
#7 Joint Stock Company “Science And Innovations” 8
#8 Kepco Nuclear Fuel Co. 7
#9 Bwxt Advanced Technologies 6
#10 Korea Hydro & Nuclear Power Co. 6
#11 Nuscale Power 6
#12 Battelle Energy Alliance 5
#13 Bwxt Mpower 5
#14 Hitachi-Ge Nuclear Energy 5
#15 Tae Technologies 5
#16 Alpha Ring International Limited 4
#17 King Abdullah City For Atomic & Renewable Energy (K.A. Care) 4
#18 Lawrence Livermore National Security 4
#19 Mitsubishi Electric 4
#20 Uchicago Argonne 4
#21 Unknown 4
#22 Westinghouse Electric Sweden Ab 4
#23 Atomic Energy Of Canada Limited 3
#24 Bwxt Isotope Technology Group 3
#25 Carbon Free Holdings 3
#26 Joint Stock Company “Atomenergoproekt” 3
#27 Joint Stock Company “Rosenergoatom” 3
#28 Kepco Engineering & Construction Company 3
#29 Nac International 3
#30 Tokamak Energy 3
#31 Triad National Security 3
#32 Advanced Accelerator Applications Sa 2
#33 Battelle Memorial Institute 2
#34 City Labs 2
#35 Curium Us 2
#36 Deep Isolation 2
#37 Gigaphoton 2
#38 Global Nuclear Fuel-Americas 2
#39 Innoven Energy 2
#40 Joint-Stock Company Scientific Research And Design Institute For Energy Technologies Atomproekt 2
#41 Korea Institute Of Radiological & Medical Sciences 2
#42 Our United 2
#43 Siemens Medical Solutions Usa 2
#44 Smr Inventec 2
#45 Stemrad 2
#46 The Boeing 2
#47 Tn International 2
#48 Tsinghua University 2
#49 Ultra Safe Nuclear 2
#50 Ut-Battelle 2
#51 Admap 1
#52 Aosense 1
#53 Areva Nc 1
#54 Australian Nuclear Science And Technology Organisation 1
#55 Board Of Supervisors Of Louisiana State University And Agricultural And Mechanical College 1
#56 Bruker Nano 1
#57 Bwxt Nuclear Energy 1
#58 Carl Zeiss Smt Gmbh 1
#59 Carnegie Mellon University 1
#60 CNRS 1
#61 Coldquanta 1
#62 CEA 1
#63 Consolidated Nuclear Security 1
#64 Curtiss-Wright Flow Control 1
#65 Dalian University Of Technology 1
#66 Dominion Engineering 1
#67 Electricite De France 1
#68 Fujifilm 1
#69 General Fusion 1
#70 Global Energy Research Associates 1
#71 Gns Gesellschafft Fuer Nuklear-Service Mbh 1
#72 Grand Abyss 1
#73 Hefei Institutes Of Physical Sciences, Chinese Academy Of Sciences 1
#74 Foxconn 1
#75 Hydromine Nuclear Energy S.A.R.L. 1
#76 Indian Institute Of Science 1
#77 Inentec 1
#78 Infineon Technologies Ag 1
#79 Ingecid, Investigacion Y Desarrollo De Proyectos, S.L. 1
#80 Institut National Des Radioeléménts 1
#81 Ion Beam Applications 1
#82 Jeol 1
#83 Jubilant Draximage 1
#84 Kabushiki Kaisha Toshiba 1
#85 Kaneka 1
#86 King Abdulaziz University 1
#87 Koniniklijke Philips N.V. 1
#88 KAIST 1
#89 Korea Institute Of Civil Engineering And Building Technology 1
#90 Kurita Water Industries 1
#91 Kyocera 1
#92 Lemer Pax 1
#93 Mayo Foundation 1
#94 Nanjing Forestry University 1
#95 National Institutes For Quantum Science And Technology 1
#96 National Technology & Engineering Solutions Of Sandia 1
#97 Nordson 1
#98 Nuctech Company Limited 1
#99 Nugen 1
#100 Operative Medical Solutions 1