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Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
Home › Technologies › Separation and mixing

Separation and mixing Patent Leaders All Time

Primary CPC class B01 · Section B

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 4,008 patents in 2020.peak 4,0081996: 1,961 patents19961997: 2,063 patents1998: 2,413 patents1999: 2,566 patents19992000: 2,499 patents2001: 2,600 patents2002: 2,467 patents20022003: 2,480 patents2004: 2,185 patents2005: 2,002 patents20052006: 2,059 patents2007: 1,942 patents2008: 2,013 patents20082009: 2,101 patents2010: 2,885 patents2011: 2,862 patents20112012: 3,039 patents2013: 3,344 patents2014: 3,430 patents20142015: 3,481 patents2016: 3,419 patents2017: 3,494 patents20172018: 3,497 patents2019: 3,883 patents2020: 4,008 patents20202021: 3,910 patents2022: 3,982 patents2023: 3,677 patents20232024: 3,822 patents2025: 3,736 patents2025

Top Inventors

Rank ↑ Inventor ↕ Patents ↕ Primary Company ↕
1 Charles A. Drake 101 Phillips Petroleum
2 Max P. McDaniel 100 Chevron
3 Clarence D. Chang 99 ExxonMobil
#4 Steven Scott Gieseke 98 Donaldson Company
#5 Richard W. Baker 88 Membrane Technology And Research
#6 Barry M. Verdegan 85 Cummins Filtration Ip
#7 Hai-Ying Chen 79 Johnson Matthey Public Limited
#8 An-hsiang Wu 78 Phillips Petroleum
#9 Benny K. Nelson 78 Donaldson Company
#10 Chunqing Liu 77 Uop
#11 Anna Lee Tonkovich 76 Velocys
#12 Hiroshi Tanaka 76 Fujitsu Limited
#13 Kalyan Handique 76 Handylab
#14 Paul Richard Phillips 76 Johnson Matthey Public Limited
#15 Stacey I. Zones 76 Chevron
#16 David A. Weitz 73 Harvard University
#17 Wayne R. W. Bishop 71 Donaldson Company
#18 Joseph Michael Fedeyko 70 Johnson Matthey Public Limited
#19 Stuart L. Soled 69 ExxonMobil
#20 Joseph C. Dettling 66 Basf Se
#21 Marvin M. Johnson 66 Phillips Petroleum
#22 Peter K. Herman 66 Cummins Filtration Ip
#23 Masaki Iijima 65 Mitsubishi Electric
#24 Christian Monereau 64 L'Air Liquide, Societe Anonyme Pour L'Etude Et L'Exploitation Des Procedes Georges Claude
#25 Kazushige Ohno 63 Ibiden Co.
#26 Timothy Christopher Golden 62 Air Products And Chemicals
#27 Daniel E. Adamek 61 Donaldson Company
#28 John R. Hacker 61 Donaldson Company
#29 Omer Refa Koseoglu 60 Saudi Arabian Oil
#30 Tatsuya Tsujiuchi 59 Mitsubishi Electric
#31 Benjamin Bikson 58 Praxair Technology
#32 Paul A. Sechrist 58 Uop
#33 Takuya Hirata 58 Mitsubishi Electric
#34 Takashi Kamijo 58 Mitsubishi Electric
#35 Andrew Francis Chiffey 57 Johnson Matthey Public Limited
#36 David J. Edlund 57 Idatech
#37 Susumu Okino 57 Mitsubishi Electric
#38 Arta Motadel 56 Biotix
#39 Christopher E. Holm 56 Cummins Filtration Ip
#40 Pascaline Tran 56 Basf Se
#41 Richard Osendorf 56 Donaldson Company
#42 Thomas D. Raether 56 Donaldson Company
#43 Zhanping Xu 56 Uop
#44 Harry W. Deckman 55 ExxonMobil
#45 Hiromasa Suzuki 55 Toyota
#46 Alexander E. Kuperman 54 Chevron
#47 Christopher A. Pohl 54 Dionex
#48 Marshall Medoff 54 Xyleco
#49 Paolo Palmas 54 Uop
#50 Joshua T. Smith 53 IBM
#51 R. Lee Roberts 53 Rg Delaware
#52 Benjamin H. Wunsch 52 IBM
#53 James F. Brazdil 52 The Standard Oil
#54 Rayford G. Anthony 52 H R D
#55 Raj Rao Rajaram 52 Johnson Matthey Public Limited
#56 Stephen N. Vaughn 52 ExxonMobil
#57 Wenyih F. Lai 51 ExxonMobil
#58 William J. Koros 51 Georgia Tech Research
#59 Abbas Hassan 50 H R D
#60 Dong Hyun Ko 50 LG
#61 Ismail C. Bagci 50 Cummins Filtration Ip
#62 Mark J. Hampden-Smith 50 Cabot
#63 Stephen J. Miller 50 Chevron
#64 Ahmad Moini 49 Basf Se
#65 Aziz Hassan 49 H R D
#66 Gerard Malgorn 49 Cummins Filtration Ip
#67 Mark V. Holzmann 49 Cummins Filtration Ip
#68 Ravi Prasad 49 Praxair Technology
#69 Yong Wang 49 Battelle Memorial Institute
#70 Heiko Weiner 48 —
#71 Joseph N. Miale 48 ExxonMobil
#72 Scott W. Schwartz 48 Cummins Filtration Ip
#73 Thomas J. Pinnavaia 48 Board Of Trustees Operating Michigan State University
#74 Johannes G. Wijmans 47 Membrane Technology And Research
#75 Kevin Ness 47 10X Genomics
#76 Lynn H. Slaugh 47 Shell Oil Compny
#77 Toivo T. Kodas 47 Cabot
#78 Brian W. Schwandt 46 Cummins Filtration Ip
#79 Douglas T. Gjerde 46 Transgenomic
#80 Egbert Lox 46 Umicore Ag & Co. Kg
#81 Emmanuel Delamarche 46 IBM
#82 Kevin Schrage 46 Donaldson Company
#83 Mordeki Drori 46 Unknown
#84 Thomas C. Gsell 46 Danaher
#85 Dimitris Ioannis Collias 45 The Procter & Gamble
#86 Pierre Cote 45 Zenon Environmental
#87 Ulrich Mueller 45 Basf Se
#88 Ulrich Müller 45 Basf Se
#89 Zemin Jiang 45 Cummins Filtration Ip
#90 Alexander Govyadinov 44 HP
#91 Alfred Hagemeyer 44 Symyx Technologies
#92 Jeffrey R. Ries 44 Caterpillar
#93 Sabato Miseo 44 ExxonMobil
#94 Tsuyoshi Oishi 44 Mitsubishi Electric
#95 Victor J. Johnston 44 —
#96 Gregory Reichter 43 Donaldson Company
#97 Hye Kyung Cho Timken 43 Chevron
#98 Kenneth R. Clem 43 ExxonMobil
#99 Masahide Miura 43 Toyota
#100 Rolf Brück 43 Emitec Gesellschaft Fuer Emissionstechnologie Mbh

Top Companies

Rank ↑ Company ↕ Patents ↕
1 ExxonMobil 2,574
2 Uop 1,572
3 Basf Se 1,398
#4 Chevron 1,129
#5 Donaldson Company 980
#6 Unknown 948
#7 E.I. Du Pont De Nemours And 945
#8 Phillips Petroleum 881
#9 GE 880
#10 Shell Oil Compny 862
#11 Danaher 606
#12 Toyota 597
#13 3M 596
#14 LG 566
#15 Ngk Insulators 557
#16 Mann+Hummel Gmbh 535
#17 Air Products And Chemicals 500
#18 Institut Francais Du Petrole 475
#19 Mitsubishi Electric 466
#20 Samsung 456
#21 University of California 441
#22 Saudi Arabian Oil 432
#23 Johnson Matthey Public Limited 401
#24 Honeywell 398
#25 Corning Incorporated 365
#26 L'Air Liquide, Societe Anonyme Pour L'Etude Et L'Exploitation Des Procedes Georges Claude 363
#27 Cummins Filtration Ip 359
#28 Praxair Technology 359
#29 Bayer Healthcare 354
#30 Dow Global Technologies 347
#31 Ifp Energies Nouvelles 327
#32 Becton, Dickinson And 288
#33 IBM 284
#34 KFUPM 278
#35 General Motors 262
#36 Hitachi 259
#37 Toray Industries 253
#38 Engelhard 234
#39 MIT 234
#40 Millipore 224
#41 Ford 223
#42 Honda Motor Co. 215
#43 Umicore Ag & Co. Kg 215
#44 KAIST 214
#45 The Standard Oil 212
#46 CNRS 210
#47 Sumitomo Chemical 206
#48 Battelle Memorial Institute 205
#49 HP 205
#50 BOE 203
#51 The Boc Group Limited 198
#52 Union Carbide 197
#53 W.R. Grace & Co.-Conn. 194
#54 Eastman Kodak 189
#55 Degussa Ag 187
#56 Haldor Topsøe A/S 187
#57 Hoechst Gmbh 185
#58 Caterpillar 184
#59 Nippon Shokubai Co. 183
#60 Thermo Fisher 183
#61 Caltech 182
#62 Monsanto Technology 181
#63 Agilent Technologies 180
#64 China Petroleum & Chemical 179
#65 CEA 179
#66 Cataler 178
#67 Canon 178
#68 Bio-Rad Laboratories 174
#69 Nitto Denko 170
#70 Linde Gmbh 168
#71 Rohm And Haas 168
#72 US Dept of Energy 166
#73 Fujifilm 164
#74 Mitsubishi Chemical 164
#75 Amoco 163
#76 Parker-Hannifin 162
#77 Hamilton Sundstrand 161
#78 Mitsubishi Mining 161
#79 Celanese Gmbh 158
#80 Kabushiki Kaisha Toshiba 158
#81 US Air Force 158
#82 Council Of Scientific And Industrial Research 157
#83 ITRI 155
#84 Union Oil Company Of California 155
#85 Emd Millipore 154
#86 RTX (Raytheon) 152
#87 Illumina 151
#88 ICI 151
#89 Waters Technologies 151
#90 Abbott 150
#91 Alstom Technology 150
#92 Entegris 146
#93 Harvard University 143
#94 Ibiden Co. 142
#95 Korea Institute Of Science And Technology 141
#96 Siemens Aktiengesellschaft 139
#97 Merck 138
#98 Panasonic 138
#99 Membrane Technology And Research 137
#100 Ebara 136