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Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
Home › Technologies › Fluid pumps

Fluid pumps Patent Leaders in 2021 2021

Primary CPC class F04 · 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 1,903 patents in 2019.peak 1,9031996: 734 patents19961997: 633 patents1998: 725 patents1999: 734 patents19992000: 1,125 patents2001: 1,188 patents2002: 1,162 patents20022003: 1,169 patents2004: 940 patents2005: 728 patents20052006: 831 patents2007: 717 patents2008: 684 patents20082009: 699 patents2010: 804 patents2011: 903 patents20112012: 1,363 patents2013: 1,203 patents2014: 1,230 patents20142015: 1,296 patents2016: 1,267 patents2017: 1,564 patents20172018: 1,580 patents2019: 1,903 patents2020: 1,831 patents20202021: 1,678 patents2022: 1,787 patents2023: 1,577 patents20232024: 1,792 patents2025: 1,624 patents2025

Top Inventors

Rank ↑ Inventor ↕ Patents ↕ Primary Company ↕
1 Chi-Feng Huang 17 Microjet Technology Co.
2 Hao-Jan Mou 15 Microjet Technology Co.
3 Yung-Lung Han 14 Microjet Technology Co.
#4 Byeongchul Lee 10 LG
#5 Cheolhwan Kim 9 LG
#6 Wei-Ming Lee 9 Microjet Technology Co.
#7 Kenichiro Iwakiri 8 Mitsubishi Heavy Industries Engine & Turbocharger
#8 Roy J. Doepker 8 Emerson Climate Technologies
#9 Shih-Chang Chen 8 Microjet Technology Co.
#10 Akihiro Nakaniwa 7 Mitsubishi Heavy Industries Compressor
#11 Edward J. Gallagher 7 RTX (Raytheon)
#12 Hajime Sato 7 Canon
#13 Jia Xu 7 Gree Electric Appliances, Inc. Of Zhuhai
#14 Seokhwan Moon 7 LG
#15 Takahide Ito 7 Mitsubishi Electric
#16 Yoshiyuki Sakaguchi 7 Edwards Japan Limited
#17 Christopher Todd Barnett 6 Kerr Machine
#18 Hsuan-Kai Chen 6 Microjet Technology Co.
#19 Joseph C. Straccia 6 RTX (Raytheon)
#20 Kate Hudon 6 RTX (Raytheon)
#21 Kelcy Jake Foster 6 Kerr Machine
#22 Lisa I. Brilliant 6 RTX (Raytheon)
#23 Liping Ren 6 Gree Electric Appliances, Inc. Of Zhuhai
#24 Mark S. Nowell 6 Kerr Machine
#25 Mark A. Stephens 6 RTX (Raytheon)
#26 Makoto Takeuchi 6 Mitsubishi Electric
#27 Shun-Chen Chang 6 Delta Electronics
#28 Stanley J. Balamucki 6 RTX (Raytheon)
#29 Taekyoung Kim 6 LG
#30 Tomokazu Matsui 6 Mitsubishi Electric
#31 Wen-San Chou 6 Unik World Industrial Co.
#32 Yoshiyuki Kimata 6 Mitsubishi Electric
#33 Yuji Takamura 6 Mitsubishi Electric
#34 Cheng-Wen Hsieh 5 Acer Incorporated
#35 Chao-Fu Yang 5 Delta Electronics
#36 James Fochtman 5 Siemens Automotive
#37 Joseph A. Beisel 5 Halliburton Energy Services
#38 John Walters 5 —
#39 Kangwook Lee 5 LG
#40 Michael Eugene May 5 Kerr Machine
#41 Michael M. Perevozchikov 5 Emerson Climate Technologies
#42 Ryouta Nakai 5 Daikin Industries
#43 Shuichi Yamashita 5 Dr. Ing. H.C. F. Porsche Ag
#44 Takahide Tadokoro 5 Mitsubishi Electric
#45 Takuma YAMASHITA 5 Mitsubishi Electric
#46 Tyler Craven 5 —
#47 Vishnu M. Sishtla 5 Carrier
#48 Wen-Neng Liao 5 Acer Incorporated
#49 Yasuo MIZUSHIMA 5 Daikin Industries
#50 Yasuhiro Murakami 5 Daikin Industries
#51 Yusheng Hu 5 Gree Electric Appliances, Inc. Of Zhuhai
#52 Alex Horng 4 Sunonwealth Electric Machine Industry Co.
#53 Alexandre Perrier 4 Sensile Medical Ag
#54 Bernd Guntermann 4 Hanon Systems
#55 Bobby Neal Norwood 4 Hunter Fan
#56 Bumdong Sa 4 LG
#57 Charles William Botkin 4 Hunter Fan
#58 Chang-Yen Tsai 4 Microjet Technology Co.
#59 David Milton Eslinger 4 Schlumberger Technology
#60 Daisuke Hirata 4 Mitsubishi Heavy Industries Compressor
#61 Derek R. Hochstetler 4 Hamilton Sundstrand
#62 Donghan Kim 4 Samsung
#63 Duane C. Johnson 4 Hamilton Sundstrand
#64 Franz Pawellek 4 Nidec Gpm Gmbh
#65 Glenn C. Lemmers, Jr. 4 Hamilton Sundstrand
#66 Hui Huang 4 Gree Electric Appliances, Inc. Of Zhuhai
#67 Jeong Cheol Jang 4 New Motech Co.
#68 Jia-Yu Liao 4 Microjet Technology Co.
#69 Justin Lee Hurst 4 Halliburton Energy Services
#70 Kazuki Tsugihashi 4 Kobe Steel
#71 Katsuyuki Yamamoto 4 Mitsubishi Electric
#72 Keita KITAGUCHI 4 Mitsubishi Electric
#73 Kirill M. Ignatiev 4 Emerson Climate Technologies
#74 Kiyoul Noh 4 LG
#75 Koichiro Hashimoto 4 Kobe Steel
#76 Kohei TATSUWAKI 4 Mitsubishi Electric
#77 Kweon Soo Lim 4 Hanon Systems
#78 Manuele Bigi 4 Nuovo Pignone Srl
#79 Masanao KOTANI 4 Hitachi
#80 Michael Nesteroff 4 —
#81 Micheal Cole Thomas 4 Kerr Machine
#82 Paul V. Cooper 4 Molten Metal Equipment Innovations
#83 Richard S. Henderson 4 Pyrotek
#84 Ricardo Rodriguez-Ramon 4 Bj Energy Solutions
#85 Ryosuke YUMOTO 4 Ihi
#86 Seiji Nakashima 4 Mitsubishi Electric
#87 Sen Yang 4 Yu Jing Technology Co.
#88 Shebing Liang 4 Gree Electric Appliances, Inc. Of Zhuhai
#89 Shinichiro Tokuyama 4 Mitsubishi Heavy Industries Compressor
#90 Soo Cheol Jeong 4 Hanon Systems
#91 Takuya OZASA 4 Ihi
#92 Takuya TERAMOTO 4 Mitsubishi Electric
#93 Takeshi Tsuchiya 4 Hitachi Industrial Equipment Systems Co.
#94 Ted A. Martin 4 Hamilton Sundstrand
#95 Thomas Afshari 4 Project Phoenix
#96 Tony Yeung 4 Bj Energy Solutions
#97 Yohei Hotta 4 Mitsubishi Heavy Industries Thermal Systems
#98 Zhongcheng Du 4 Gree Electric Appliances, Inc. Of Zhuhai
#99 Adrian Marica 3 National Oilwell Varco
#100 Akinobu Kanai 3 Toyota Industries

Top Companies

Rank ↑ Company ↕ Patents ↕
1 LG 74
2 RTX (Raytheon) 38
3 Mitsubishi Electric 32
#4 Mitsubishi Heavy Industries Compressor 26
#5 Emerson Climate Technologies 23
#6 Daikin Industries 20
#7 Hamilton Sundstrand 20
#8 Delta Electronics 19
#9 Hanon Systems 17
#10 Microjet Technology Co. 17
#11 Kobe Steel 16
#12 Mitsubishi Heavy Industries Engine & Turbocharger 16
#13 Nidec 16
#14 Grundfos Holding A/S 15
#15 Halliburton Energy Services 15
#16 Denso 14
#17 Graco Minnesota 14
#18 Toyota Industries 14
#19 Robert Bosch Gmbh 14
#20 Edwards Japan Limited 13
#21 Rolls-Royce Plc 13
#22 Pierburg Pump Technology Gmbh 12
#23 Trane International 12
#24 GE 12
#25 Atlas Copco Airpower, Naamloze Vennootschap 11
#26 Ihi 11
#27 Ebm-Papst Mulfingen 10
#28 Hitachi Industrial Equipment Systems Co. 10
#29 Nuovo Pignone Srl 10
#30 Schlumberger Technology 10
#31 Carrier 9
#32 Edwards Limited 9
#33 Hyundai Motor 9
#34 Mitsubishi Heavy Industries Thermal Systems 9
#35 Regal Beloit America 9
#36 Safran Aircraft Engines 9
#37 Shimadzu 9
#38 Samsung 9
#39 Gree Electric Appliances, Inc. Of Zhuhai 8
#40 Kia Motors 8
#41 Murata Manufacturing Co. 8
#42 Nuovo Pignone Tecnologie S.R.L. 8
#43 Ford 8
#44 Panasonic 8
#45 Johnson Controls Technology 7
#46 Unknown 7
#47 Toyota 7
#48 Asia Vital Components Co. 6
#49 Danfoss A/S 6
#50 Hunter Fan 6
#51 Ingersoll-Rand Industrial U.S. 6
#52 Kerr Machine 6
#53 Honeywell 6
#54 Acer Incorporated 5
#55 Eaton Intelligent Power Limited 5
#56 Hitachi Automotive Systems 5
#57 Siemens Energy Global 5
#58 Sulzer Management Ag 5
#59 Zf Cv Systems Europe Bv 5
#60 General Motors 5
#61 Aisin Seiki Kabushiki Kaisha 4
#62 Asustek Computer 4
#63 Bitzer Kühlmaschinenbau Gmbh 4
#64 Bj Energy Solutions 4
#65 Brose Fahrzeugteile Gmbh & Co. Kommanditgesellschaft 4
#66 Continental Automotive Gmbh 4
#67 Cooler Master Co. 4
#68 Ebara 4
#69 Ecp Entwicklungsgesellschaft Mbh 4
#70 Gree Green Refrigeration Technology Center Co., Ltd. Of Zhuhai 4
#71 Hitachi 4
#72 Illinois Tool Works 4
#73 Iwaki Co. 4
#74 Koniniklijke Philips N.V. 4
#75 Mahle International Gmbh 4
#76 Minebea Mitsumi 4
#77 Molten Metal Equipment Innovations 4
#78 New Motech Co. 4
#79 Nidec Gpm Gmbh 4
#80 Project Phoenix 4
#81 Pyrotek 4
#82 Sensile Medical Ag 4
#83 St9 Gas And Oil 4
#84 Sunonwealth Electric Machine Industry Co. 4
#85 The Boeing 4
#86 Weatherford Technology Holdings 4
#87 Ziehl-Abegg Se 4
#88 John Deere 4
#89 Agilent Technologies 3
#90 Amotech Co. 3
#91 Artemis Intelligent Power Limited 3
#92 Baker Hughes Esp 3
#93 Baker Hughes Holdings 3
#94 Cummins 3
#95 Dell Products 3
#96 Delta T 3
#97 Denso Ten Limited 3
#98 Eagle Industry Co. 3
#99 Emerson Climate Technologies (Suzhou) Co. 3
#100 Energy Recovery 3