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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 687 patents in 2019.peak 6871996: 264 patents19961997: 251 patents1998: 335 patents1999: 332 patents19992000: 325 patents2001: 407 patents2002: 340 patents20022003: 321 patents2004: 339 patents2005: 342 patents20052006: 415 patents2007: 300 patents2008: 205 patents20082009: 231 patents2010: 305 patents2011: 295 patents20112012: 330 patents2013: 350 patents2014: 340 patents20142015: 368 patents2016: 418 patents2017: 556 patents20172018: 598 patents2019: 687 patents2020: 608 patents20202021: 586 patents2022: 551 patents2023: 483 patents20232024: 546 patents2025: 522 patents2025

Top Inventors

Rank Inventor Patents Primary Company
1 Madhusudan K. Iyengar 5 IBM
2 Akira Ishibashi 4 Mitsubishi Electric
3 Chun-Ming Wu 4 Asia Vital Components Co.
#4 Levi A. Campbell 4 IBM
#5 Lowell L. Wood, JR. 4 The Invention Science Fund I
#6 Masanori Jindou 4 Daikin Industries
#7 Michael J. Ellsworth, Jr. 4 IBM
#8 Paul Garret 4 Valeo Systemes Thermiques
#9 Roger R. Schmidt 4 IBM
#10 Sangmu Lee 4 Mitsubishi Electric
#11 Takuya Matsuda 4 Mitsubishi Electric
#12 Yoshio Oritani 4 Daikin Industries
#13 Christian Riondet 3 Valeo Systemes Thermiques
#14 Doug Vanderwees 3 Dana Canada
#15 Eldon F. Mockry 3 Spx Cooling Technologies
#16 Hsiu-Wei Yang 3 Asia Vital Components Co.
#17 Jae Yeon Kim 3 Hyundai Motor
#18 Jean-Marc Lesueur 3 Valeo Systemes Thermiques
#19 Jianlong Jiang 3 Sanhua (Hangzhou) Micro Channel Heat Exchanger Co.
#20 Jordin T. Kare 3 Intellectual Ventures
#21 Linjie Huang 3 Hangzhou Sanhua Research Institute Co.
#22 Milnes P. David 3 IBM
#23 Richard C. Chu 3 IBM
#24 Roderick A. Hyde 3 Intellectual Ventures
#25 Robert E. Simons 3 IBM
#26 Stefan Hirsch 3 Mahle International Gmbh
#27 Tomas Dahlberg 3 Swep International Ab
#28 Wan Je Cho 3 Hyundai Motor
#29 Achim Wiebelt 2 Mahle International Gmbh
#30 Bruno Agostini 2 Abb Schweiz Ag
#31 Brian E. Cheadle 2 Dana Canada
#32 Branislav Korenic 2 Baltimore Aircoil Company
#33 Brian Merklein 2 Modine Manufacturing
#34 Clarence T. Tegreene 2 Intellectual Ventures
#35 David Andrew Aaron 2 Baltimore Aircoil Company
#36 Duane Krehbiel 2 Spx Cooling Technologies
#37 Edward M. Silverman 2
#38 Ercan Mehmet Dede 2 Stanford University
#39 Eric G. Landre 2 The Boeing
#40 Eric Piniarski 2 Valeo Systemes Thermiques
#41 Feng Wang 2 Dometic Sweden Ab
#42 Fredrik Blomgren 2 Alfa Laval Corporate Ab
#43 Franciscus M. G. Van Den Kerkhof 2 Océ-Technologies B.V.
#44 Gerrit P. J. Du Buf 2 Océ-Technologies B.V.
#45 George Lucas 2 Prime Datum
#46 Glenn David Comisac 2 Baltimore Aircoil Company
#47 Gregory Michael Lowman 2 Baltimore Aircoil Company
#48 Gregg D. Olson 2 Modine Manufacturing
#49 Guohai Liu 2
#50 Heiko Neff 2 Mahle International Gmbh
#51 Hsiao-Hu Peng 2
#52 Huazhao Liu 2 Sanhua (Hangzhou) Micro Channel Heat Exchanger Co.
#53 Jer-Sheng Hwang 2 Enermax Technology
#54 Jesse B. Tice 2
#55 Jochen Orso 2 Modine Manufacturing
#56 John Edward Rule 2 Baltimore Aircoil Company
#57 John A. Starkovich 2
#58 Jorg Wille 2 Modine Manufacturing
#59 Joachim Wollmershäuser 2 Modine Manufacturing
#60 Junichi Hamadate 2 Daikin Industries
#61 Juhyok KIM 2 LG
#62 Kazuhiko Yamazaki 2 IBM
#63 Kuei-Feng Chiang 2 Asia Vital Components Co.
#64 Lin-Jie Huang 2 Delphi Technologies
#65 Liu Huazhao 2 Danfoss A/S
#66 Margo H. J. Beurskens-Linssen 2 Océ-Technologies B.V.
#67 Martin Holm 2 Alfa Laval Corporate Ab
#68 Mark Kazikowski 2 Modine Manufacturing
#69 Michael Bardeleben 2 Dana Canada
#70 Michael A. Martin 2 Dana Canada
#71 Michel Vouche 2 Spx Cooling Technologies
#72 Muriel Y. Ishikawa 2 The Invention Science Fund I
#73 Muhammad Umar Siddiqui 2 KFUPM
#74 Nathan P. Myhrvold 2 The Invention Science Fund I
#75 Paul Hink 2 Spx Cooling Technologies
#76 Paul F. Nehlen, III 2 Blue Skies Global
#77 Patrick M. Rollins 2 Prime Datum
#78 Pannalal Vimalchand 2
#79 Philippe Faille 2 Valeo Systemes Thermiques
#80 Philip Hollander 2 Baltimore Aircoil Company
#81 Preston Blay 2 Baltimore Aircoil Company
#82 Randall W. Powell 2 Spx Cooling Technologies
#83 Roy J. Ingold 2 Modine Manufacturing
#84 Sangyeul Lee 2 LG
#85 Scott M. Maurer 2 Lockheed Martin
#86 Shyy-Woei Chang 2 Asia Vital Components Co.
#87 Sheng-Huang Lin 2 Asia Vital Components Co.
#88 Shun Yoshioka 2 Daikin Industries
#89 Sven Andersson 2 Swep International Ab
#90 Svante Hoberg 2 Swep International Ab
#91 Syed Ahmed Mohammad Said 2 KFUPM
#92 Takuya Kazusa 2 Daikin Industries
#93 Takashi Yamashita 2 Ushio Denki Kabushiki Kaisha
#94 Takeshi Yoshida 2 Seiko Epson
#95 Teng-Kai Chang 2 Enermax Technology
#96 Tetsuya Ide 2 Sharp Kabushiki Kaisha
#97 Thomas A. Weaver 2 The Invention Science Fund I
#98 Timothy J. Kane 2 Crossford International
#99 Tomas Kovacs 2 Alfa Laval Corporate Ab
#100 WanWang Peng 2

Top Companies

Rank Company Patents
1 Asia Vital Components Co. 15
2 Mahle International Gmbh 11
3 Mitsubishi Electric 11
#4 Valeo Systemes Thermiques 9
#5 LG 9
#6 Alfa Laval Corporate Ab 8
#7 Daikin Industries 8
#8 Danfoss A/S 7
#9 Denso 7
#10 Sanhua (Hangzhou) Micro Channel Heat Exchanger Co. 7
#11 IBM 7
#12 Dana Canada 6
#13 Modine Manufacturing 6
#14 Spx Cooling Technologies 6
#15 Toyota 5
#16 CEA 4
#17 Hyundai Motor 4
#18 Intellectual Ventures 3
#19 Foxconn Technology Group Co. 3
#20 Kobe Steel 3
#21 Sharp Kabushiki Kaisha 3
#22 Swep International Ab 3
#23 The Boeing 3
#24 Huawei 3
#25 Abb Research 2
#26 Baltimore Aircoil Company 2
#27 Delphi Technologies 2
#28 Enermax Technology 2
#29 F.F. Seeley Nominees Pty 2
#30 Fujitsu Limited 2
#31 Furui Precise Component (Kunshan) Co. 2
#32 Hamilton Sundstrand 2
#33 Kabushiki Kaisha Toshiba 2
#34 Keihin Thermal Technology 2
#35 KFUPM 2
#36 Kyocera 2
#37 Linde Gmbh 2
#38 Mitsubishi Aluminum Co. 2
#39 Neptune Benson 2
#40 Nippon Light Metal Company 2
#41 Northrop Grumman 2
#42 Océ-Technologies B.V. 2
#43 Prime Datum 2
#44 Sandia 2
#45 Saudi Arabian Oil 2
#46 Shell Oil Compny 2
#47 Southern Company Services 2
#48 Tencent 2
#49 Thermal 2
#50 Trane International 2
#51 Caterpillar 2
#52 John Deere 2
#53 Ford 2
#54 GE 2
#55 Google 2
#56 Lockheed Martin 2
#57 Apple 1
#58 Applied Materials 1
#59 7Ac Technologies 1
#60 Aavid Thermalloy 1
#61 Abb Technology Ag 1
#62 Acer Incorporated 1
#63 Aerco International 1
#64 Ail Research 1
#65 Airbus Operations Sas 1
#66 Aleris Rolled Products Germany Gmbh 1
#67 Alfa Laval Vicarb 1
#68 Alstom Technology 1
#69 Basf Se 1
#70 Battelle Memorial Institute 1
#71 Biofilm Ip 1
#72 Brentwood Industries 1
#73 Brinkmann Pumpen K.H. Brinkmann Gmbh & Co. Kg 1
#74 Calsonic Kansei 1
#75 Carrier 1
#76 Cft S.P.A. 1
#77 Chaun-Choung Technology 1
#78 Chroma Ate 1
#79 Conductix Wampfler France 1
#80 Cool Energy 1
#81 Cooler Master Development 1
#82 Coolit Systems 1
#83 Cooper Technologies 1
#84 Cray 1
#85 Crom 1
#86 Crossford International 1
#87 Dcns 1
#88 Denso International America 1
#89 Denso Marston 1
#90 Dpoint Technologies 1
#91 Drexel University 1
#92 Dri-Steem 1
#93 Eberspächer Exhaust Technology Gmbh 1
#94 Emitec Gesellschaft Fuer Emissionstechnologie Mbh 1
#95 Energy Technologies Institute Llp 1
#96 Eni S.P.A. 1
#97 Evapco 1
#98 Finisar 1
#99 Fujitsu General Limited 1
#100 Gea Egi Energiagazdalkodasi Zrt. 1