Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
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Engines and machines Patent Leaders in 2018 2018

Primary CPC class F01 · Section F

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 3,340 patents in 2019.peak 3,3401996: 732 patents19961997: 720 patents1998: 950 patents1999: 925 patents19992000: 1,074 patents2001: 1,306 patents2002: 1,314 patents20022003: 1,255 patents2004: 1,172 patents2005: 1,158 patents20052006: 1,283 patents2007: 1,146 patents2008: 1,105 patents20082009: 1,159 patents2010: 1,399 patents2011: 1,562 patents20112012: 2,088 patents2013: 2,075 patents2014: 2,451 patents20142015: 2,399 patents2016: 2,170 patents2017: 2,567 patents20172018: 2,823 patents2019: 3,340 patents2020: 3,328 patents20202021: 2,794 patents2022: 2,594 patents2023: 2,031 patents20232024: 1,817 patents2025: 1,642 patents2025

Top Inventors

Rank ↑ Inventor ↕ Patents ↕ Primary Company ↕
1 Michael G. McCaffrey 24 RTX (Raytheon)
2 Kyoung Pyo Ha 22 Hyundai Motor
3 Back Sik Kim 21 Hyundai Motor
#4 You Sang Son 21 Hyundai Motor
#5 Gabriel L. Suciu 19 RTX (Raytheon)
#6 Ted J. Freeman 18 —
#7 Tracy A. Propheter-Hinckley 18 RTX (Raytheon)
#8 Dominic J. Mongillo 15 RTX (Raytheon)
#9 Paul M. Lutjen 15 RTX (Raytheon)
#10 Brian D. Merry 13 RTX (Raytheon)
#11 Brandon W. Spangler 13 RTX (Raytheon)
#12 David Wayne Weber 12 GE
#13 San Quach 12 RTX (Raytheon)
#14 Xiaogang Zhang 12 Ford
#15 Frederick M. Schwarz 11 RTX (Raytheon)
#16 Gregory Thomas Foster 11 GE
#17 James D. Hill 11 RTX (Raytheon)
#18 Takeo Asahi 11 Aisin Seiki Kabushiki Kaisha
#19 Yuji Noguchi 11 Aisin Seiki Kabushiki Kaisha
#20 David J. Thomas 10 —
#21 Gary Michael Itzel 10 GE
#22 Jonathan Ariel Scott 10 RTX (Raytheon)
#23 Thomas N. Slavens 10 RTX (Raytheon)
#24 Benjamin F. Hagan 9 RTX (Raytheon)
#25 Daniel K. Vetters 9 —
#26 Ken F. Blaney 9 RTX (Raytheon)
#27 Neelesh Nandkumar Sarawate 9 GE
#28 Rohit Chouhan 9 GE
#29 Aaron Ezekiel Smith 8 GE
#30 Anthony P. Cherolis 8 RTX (Raytheon)
#31 Christopher Corcoran 8 RTX (Raytheon)
#32 Christopher W. Strock 8 RTX (Raytheon)
#33 Conway Chuong 8 RTX (Raytheon)
#34 Daniel A. Snyder 8 RTX (Raytheon)
#35 Kiyoung Kwon 8 Hyundai Motor
#36 Scott D. Lewis 8 RTX (Raytheon)
#37 Timothy M. Davis 8 RTX (Raytheon)
#38 Toru Kidokoro 8 Toyota
#39 William G. Sheridan 8 RTX (Raytheon)
#40 Alexander Boeck 7 Mtu Aero Engines Ag
#41 Benoît Hauvespre 7 Aktiebolaget Skf
#42 Benjamin Paul Lacy 7 GE
#43 Brendon James Leary 7 GE
#44 Christopher Benson 7 Rolls-Royce Plc
#45 Ching-Pang Lee 7 GE
#46 Craig M. Beers 7 Hamilton Sundstrand
#47 Darrell Glenn Senile 7 GE
#48 Dmitriy A. Romanov 7 RTX (Raytheon)
#49 Frank Stiehler 7 Mtu Aero Engines Ag
#50 Jorge I. Farah 7 RTX (Raytheon)
#51 Joseph P. Lamusga 7 —
#52 Jonathan Lemoine 7 RTX (Raytheon)
#53 Mark F. Zelesky 7 RTX (Raytheon)
#54 Ryan Alan Waite 7 RTX (Raytheon)
#55 Samuel Viault 7 Aktiebolaget Skf
#56 Steven Bruce Gautschi 7 RTX (Raytheon)
#57 Steven D. Porter 7 RTX (Raytheon)
#58 Victor John Morgan 7 GE
#59 Aaron D. Sippel 6 —
#60 Brandon Wayne Miller 6 GE
#61 Christopher King 6 RTX (Raytheon)
#62 Colin Foster 6 Schaeffler
#63 Daniel Alan Niergarth 6 GE
#64 Debora Manther 6 Schaeffler
#65 Faheem Ahmed 6 Schaeffler
#66 Hiroyuki Hamasaki 6 Renesas Electronics
#67 Jürgen Meusel 6 Thyssenkrupp Presta Teccenter Ag
#68 Lewis Berkley Davis, Jr. 6 GE
#69 Matthew Budnick 6 RTX (Raytheon)
#70 Michelle Jessica Iduate 6 GE
#71 Olaf Boese 6 Schaeffler
#72 Parag Prakash Kulkarni 6 GE
#73 Rahul Mital 6 General Motors
#74 Russell J. Bergman 6 RTX (Raytheon)
#75 Srikanth Chandrudu Kottilingam 6 GE
#76 Takumi Hikichi 6 Panasonic
#77 Thomas B. Hyatt 6 RTX (Raytheon)
#78 Thomas J. Robertson 6 RTX (Raytheon)
#79 Tomohiro Kajita 6 Aisin Seiki Kabushiki Kaisha
#80 Yohei Hosokawa 6 Toyota
#81 Aed M. Dudar 5 Ford
#82 Anders Hoglund 5 Freevalve Ab
#83 Anthony L. Spoor 5 Eaton Intelligent Power Limited
#84 Carl Brian Klinetob 5 RTX (Raytheon)
#85 Chung Han Oh 5 Hyundai Motor
#86 Christopher Treat 5 RTX (Raytheon)
#87 David Waldman 5 Honeywell
#88 Douglas Raymond Martin 5 Ford
#89 Edward F. Pietraszkiewicz 5 RTX (Raytheon)
#90 Eric W. Stratton 5 RTX (Raytheon)
#91 Georges Maguin 5 Continental Automotive Gmbh
#92 Herbert Brandl 5 Alstom Technology
#93 Herbert Chidsey Roberts 5 GE
#94 Jason Edward Albert 5 GE
#95 Jan Hodgson 5 Emitec Gesellschaft Fuer Emissionstechnologie Mbh
#96 Jacob Charles Perry, II 5 GE
#97 Jeffrey R. Levine 5 RTX (Raytheon)
#98 Jeffrey A. Walston 5 —
#99 John Eric Rollinger 5 Ford
#100 Joseph Anthony Weber 5 GE

Top Companies

Rank ↑ Company ↕ Patents ↕
1 RTX (Raytheon) 491
2 GE 273
3 Rolls-Royce Plc 120
#4 Toyota 104
#5 Hyundai Motor 103
#6 Ford 76
#7 Snecma 70
#8 Siemens Aktiengesellschaft 69
#9 General Motors 65
#10 Schaeffler 57
#11 Mtu Aero Engines Ag 44
#12 Borgwarner 36
#13 Rolls-Royce North America 35
#14 Safran Aircraft Engines 30
#15 Honeywell 30
#16 Siemens Energy 28
#17 Caterpillar 28
#18 Honda Motor Co. 27
#19 Cummins Emission Solutions 24
#20 Kia Motors 24
#21 Aisin Seiki Kabushiki Kaisha 23
#22 Rolls-Royce Deutschland 22
#23 Ansaldo Energia Switzerland Ag 20
#24 Mitsubishi Hitachi Power Systems 20
#25 Safran Aero Boosters 20
#26 Denso 19
#27 Robert Bosch Gmbh 19
#28 Hamilton Sundstrand 18
#29 Ansaldo Energia Ip Uk Limited 17
#30 Continental Automotive Gmbh 17
#31 Mahle International Gmbh 15
#32 Tenneco Automotive Operating Company 15
#33 Eaton 14
#34 Ihi 14
#35 Mitsubishi Electric 14
#36 Ngk Insulators 14
#37 Suzuki Motor 13
#38 Mazda Motor 12
#39 Yanmar Holdings Co. 11
#40 Cummins 10
#41 Eberspächer Exhaust Technology Gmbh 10
#42 Otics 10
#43 Thyssenkrupp Presta Teccenter Ag 10
#44 Volvo Truck 10
#45 Delphi Technologies Ip Limited 9
#46 Hitachi Automotive Systems 9
#47 Kawasaki 9
#48 Aktiebolaget Skf 8
#49 Isuzu Motors Limited 8
#50 Rohr 8
#51 Unknown 8
#52 ExxonMobil 8
#53 BMW 7
#54 Daimler Ag 7
#55 Echogen Power Systems 7
#56 Kabushiki Kaisha Toshiba 7
#57 Kubota 7
#58 Mitsubishi Heavy Industries Compressor 7
#59 Panasonic 7
#60 Avl List Gmbh 6
#61 Doosan Heavy Industries & Construction Co. 6
#62 Kobe Steel 6
#63 Ngk Spark Plug Co. 6
#64 Nuovo Pignone Srl 6
#65 The Boeing 6
#66 Audi Ag 5
#67 Cummins Filtration Ip 5
#68 Faurecia Emissions Control Technologies, Usa 5
#69 Freevalve Ab 5
#70 Hino Motors 5
#71 Hitachi 5
#72 Jaguar Land Rover Limited 5
#73 Toyota Industries 5
#74 Nissan Motor Co. 5
#75 Volvo Car 5
#76 Bosch Mahle Turbo Systems Gmbh & Go. Kg 4
#77 Brunswick 4
#78 C.R.F. Societa' Consortile Per Azioni 4
#79 Dresser-Rand 4
#80 Eaton Intelligent Power Limited 4
#81 Emitec Gesellschaft Fuer Emissionstechnologie Mbh 4
#82 Man Truck &Bus Ag 4
#83 Nifco 4
#84 Rolls-Royce High Temperature Composites 4
#85 Safran Helicopter Engines 4
#86 Saudi Arabian Oil 4
#87 Scania Cv Ab 4
#88 Solar Turbines Incorporated 4
#89 Turbomeca 4
#90 Yamaha Motor 4
#91 John Deere 4
#92 3M 3
#93 Aquarius Engines (A.M.) 3
#94 Basf Se 3
#95 Briggs & Stratton 3
#96 Cataler 3
#97 Danfoss A/S 3
#98 Denso International America 3
#99 Eco Holding 1 Gmbh 3
#100 Electratherm 3