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Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025

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 13 Holtec International
2 Cheon-Woo Kim 5 Korea Hydro & Nuclear Power Co.
3 Michael D. Heibel 5 Westinghouse Electric
#4 Seok-Ju Hwang 5 Korea Hydro & Nuclear Power Co.
#5 Young Hwan Hwang 5 Korea Hydro & Nuclear Power Co.
#6 Benjamin D. Fisher 4 Bwxt Advanced Technologies
#7 Craig D. GRAMLICH 4 Bwxt Advanced Technologies
#8 Eric P. Loewen 4 Ge-Hitachi Nuclear Energy Americas
#9 Guanghui Su 4 Xi'An Jiaotong University
#10 Joshua C. Walter 4 Terrapower
#11 Stephen J. Agace 4 Holtec International
#12 Suizheng Qiu 4 Xi'An Jiaotong University
#13 Troy Michael Howe 4 Howe Industries
#14 Wenxi Tian 4 Xi'An Jiaotong University
#15 Brian Regna 3 Curium Us
#16 Craig Brunkhorst 3 Curium Us
#17 David Pipes 3 Curium Us
#18 Jesse R. Cheatham, III 3 Terrapower
#19 Lauren Radford 3 Curium Us
#20 Mi-Hyun Lee 3 Samsung
#21 Mingjun Wang 3 Xi'An Jiaotong University
#22 Peter Cabauy 3 City Labs
#23 Scott J. Shargots 3 Bwxt Mpower
#24 William Uhland 3 Curium Us
#25 Allyson Callaway 2 Nuscale Power
#26 Alex Levinsky 2 Westinghouse Electric
#27 Anthonius Cornelis Rodenburg 2 Terrestrial Energy
#28 Ben Bristol 2 Nuscale Power
#29 Bret J. Elkind 2 City Labs
#30 Chong Chen 2 Gree Electric Appliances, Inc. Of Zhuhai
#31 Charles L. Heck 2 Ge-Hitachi Nuclear Energy Americas
#32 Christopher Martin 2 Palantir Technologies
#33 Christopher S. Roper 2 Hrl Laboratories
#34 Claudio Filippone 2 Carbon Free Holdings
#35 David Gates 2 Princeton University
#36 Danny Kim 2 Fullarmor
#37 David Leblanc 2 Terrestrial Energy
#38 David Taro Morikawa 2 Ats
#39 Dirk Blavius 2 Areva Np
#40 Edward J. Lahoda 2 Westinghouse Electric
#41 Felix Schmitt 2 Huels Aktiengesellschaft
#42 Franck Morin 2 Amplitude Systemes
#43 Gert Seybert 2 Framatome
#44 Gilles Avakian 2 CEA
#45 Guoxi Lian 2
#46 Haiquan Zhang 2 Auxora (Shenzhen)
#47 Hongke Li 2 Tsinghua University
#48 Ian Counts 2 Hrl Laboratories
#49 Immanuel Bloch 2 Max-Planck-Gesellschaft Zur Föderung Der Wissenschaften E.V.
#50 Jared William Schwede 2 Spark Thermionics
#51 Jeffrey L. Arndt 2 Westinghouse Electric
#52 Jennifer Ellis 2 Hrl Laboratories
#53 Jesse Grant 2 Abl Ip Holding
#54 Jens Schaefer 2 Schaeffler
#55 Jiguo Liu 2 Shandong Madic Technology Co.
#56 Jing Zhang 2 Hefei Core Storage Electronic Limited
#57 Joonhyung Choi 2 Westinghouse Electric
#58 John D. Griffiths 2 Holtec International
#59 John H. Kutsch 2 Medline Industries, Lp
#60 John R. SALASIN 2 Bwxt Advanced Technologies
#61 Jonathan Witter 2 Capital One Services
#62 Junfeng Nie 2 Tsinghua University
#63 Juan Sun 2 Tencent
#64 Julien Torgue 2 Orano Med
#65 Ken Czerwinski 2 Terrapower
#66 Kevin Kramer 2 Terrapower
#67 Kenneth Rooks 2 Nuscale Power
#68 Kouji Hiraiwa 2 Kabushiki Kaisha Toshiba
#69 Koroush Shirvan 2
#70 Kun Lu 2 Hefei Institutes Of Physical Sciences, Chinese Academy Of Sciences
#71 Kyana Van Houten 2 Spark Thermionics
#72 Larry Linik 2 Nuscale Power
#73 Larry C. Olsen 2 City Labs
#74 Lewis A. Walton 2 Bwxt Mpower
#75 Lucas Heinrich Hess 2 Spark Thermionics
#76 Matthew W. Ales 2 Bwxt Mpower
#77 Mark Johannesson 2 Ats
#78 Mehul Shah 2 T-Mobile Usa
#79 Michl W. Binderbauer 2 University of California
#80 Michael Alexander Brown 2 Uchicago Argonne
#81 Rémy Dureau 2 Orano Med
#82 Rei Kimura 2 Kabushiki Kaisha Toshiba
#83 Rida MILANY 2
#84 Robert A. Corbin 2 Terrapower
#85 Robert C. Petroski 2 Intellectual Ventures
#86 Robert Stowers Reid 2 Triad National Security
#87 Ryan Z. Ziegler 2 Bwxt Nuclear Energy
#88 Sean T Mosier 2 Terrapower
#89 Steven D. Howe 2 Howe Industries
#90 Szilard Kovacs 2 Framatome
#91 Toshiki Tajima 2 Tae Technologies
#92 Travis Autry 2 Hrl Laboratories
#93 William Graves 2 Clearmotion
#94 Xin Wang 2 Fujitsu Limited
#95 Xuebing PENG 2 Hefei Institutes Of Physical Sciences, Chinese Academy Of Sciences
#96 Xuyang Wu 2 Huawei
#97 Yang Gao 2 Huawei
#98 Yifu An 2
#99 Yuriy Aleshin 2 Westinghouse Electric
#100 Yujie Dong 2 Tsinghua University

Top Companies

Rank Company Patents
1 Westinghouse Electric 20
2 Holtec International 11
3 Framatome 10
#4 Terrapower 10
#5 Ge-Hitachi Nuclear Energy Americas 8
#6 Nuscale Power 7
#7 Bwxt Advanced Technologies 6
#8 Korea Hydro & Nuclear Power Co. 6
#9 Uchicago Argonne 6
#10 Tae Technologies 5
#11 Bwxt Mpower 4
#12 Curium Us 4
#13 Howe Industries 4
#14 Quantinuum 4
#15 Xi'An Jiaotong University 4
#16 Asml Netherlands B.V. 3
#17 City Labs 3
#18 Hitachi-Ge Nuclear Energy 3
#19 Kabushiki Kaisha Toshiba 3
#20 Kepco Nuclear Fuel Co. 3
#21 Korea Atomic Energy Research Institute 3
#22 MIT 3
#23 Max-Planck-Gesellschaft Zur Föderung Der Wissenschaften E.V. 3
#24 Triad National Security 3
#25 Arizona Board Of Regents For And On Behalf Of Arizona State University 2
#26 Ats 2
#27 Battelle Energy Alliance 2
#28 Bwxt Nuclear Energy 2
#29 Carbon Free Holdings 2
#30 CNRS 2
#31 CEA 2
#32 Global Nuclear Fuel-Americas 2
#33 Hefei Institutes Of Physical Sciences, Chinese Academy Of Sciences 2
#34 Hrl Laboratories 2
#35 Jubilant Draximage 2
#36 Orano Med 2
#37 Riken 2
#38 Schlumberger Technology 2
#39 Smr Inventec 2
#40 Spark Thermionics 2
#41 Terrestrial Energy 2
#42 Princeton University 2
#43 Tokamak Energy 2
#44 Toshiba Energy Systems & Solutions 2
#45 Ultra Safe Nuclear 2
#46 Unknown 2
#47 Ut-Battelle 2
#48 Varian Medical Systems 2
#49 Westinghouse Electric Sweden Ab 2
#50 WARF 2
#51 X-Energy 2
#52 Abc Transfer 1
#53 Australian Nuclear Science And Technology Organisation 1
#54 Avantech 1
#55 Battelle Savannah River Alliance 1
#56 Bracco Diagnostics 1
#57 Bruker Nano 1
#58 Bwxt Isotope Technology Group 1
#59 Bwxt Technical Services Group 1
#60 Carestream Health 1
#61 Carl Zeiss X-Ray Microscopy 1
#62 Cerium Laboratories 1
#63 Cornell University 1
#64 Curtiss-Wright Flow Control 1
#65 Dana-Farber Cancer Institute 1
#66 Electricite De France 1
#67 Energy, United States Department Of 1
#68 Fei 1
#69 Flowserve Pte. 1
#70 General Atomics 1
#71 Harbin Engineering University 1
#72 Hitachi Energy 1
#73 Illinois Tool Works 1
#74 Infineon Technologies Austria Ag 1
#75 Innoven Energy 1
#76 Institute Of High Energy Physics, Chinese Academy Of Sciences 1
#77 Joint Stock Company “Atomenergoproekt” 1
#78 King Abdullah University Of Science And Technology 1
#79 Koniniklijke Philips N.V. 1
#80 Lawrence Livermore National Security 1
#81 Metrolaser 1
#82 Moxtek 1
#83 Neutron Therapeutics 1
#84 Nihon Medi-Physics Co. 1
#85 NTT 1
#86 North Carolina State University 1
#87 Harvard University 1
#88 Qsa Global 1
#89 Radiaction 1
#90 Rad Technology Medical Systems 1
#91 Rigaku 1
#92 Robotic Technologies Limited 1
#93 Rochester Institute Of Technology 1
#94 Sciencons As 1
#95 Shanghai Nuclear Engineering Research & Design Institute Co. 1
#96 Shanghai United Imaging Healthcare Co. 1
#97 Shine Technologies 1
#98 Société Technique Pour L'Energie Atomique 1
#99 Southern University Of Science And Technology 1
#100 Southwest University Of Science And Technology 1