{"@context": "https://schema.org", "@type": "BreadcrumbList", "itemListElement": [{"@type": "ListItem", "position": 1, "name": "Home", "item": "https://www.patentleaderboard.com/"}, {"@type": "ListItem", "position": 2, "name": "Technologies", "item": "https://www.patentleaderboard.com/technologies"}, {"@type": "ListItem", "position": 3, "name": "Control systems", "item": "https://www.patentleaderboard.com/technology/control-systems"}]}
Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
Home › Technologies › Control systems

Control systems Patent Leaders in 2021 2021

Primary CPC class G05 · Section G

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 3,447 patents in 2019.peak 3,4471996: 765 patents19961997: 747 patents1998: 965 patents1999: 1,008 patents19992000: 961 patents2001: 1,042 patents2002: 1,064 patents20022003: 1,162 patents2004: 1,204 patents2005: 1,096 patents20052006: 1,432 patents2007: 1,150 patents2008: 1,003 patents20082009: 1,107 patents2010: 1,362 patents2011: 1,382 patents20112012: 1,431 patents2013: 1,641 patents2014: 1,743 patents20142015: 1,864 patents2016: 1,987 patents2017: 2,322 patents20172018: 2,669 patents2019: 3,447 patents2020: 3,327 patents20202021: 3,043 patents2022: 3,219 patents2023: 3,183 patents20232024: 2,961 patents2025: 2,979 patents2025

Top Inventors

Rank ↑ Inventor ↕ Patents ↕ Primary Company ↕
1 Charles Howard Cella 42 Strong Force Iot Portfolio 2016
2 Gerald William Duffy, Jr. 42 Strong Force Iot Portfolio 2016
3 Jeffrey P. McGuckin 42 Strong Force Iot Portfolio 2016
#4 Mehul Desai 32 Strong Force Iot Portfolio 2016
#5 Elizabeth J. Main 10 Enel X North America
#6 Michael J. Wenzel 10 Johnson Controls Technology
#7 Joseph W. Forbes, Jr. 9 Causam Energy
#8 Ali Ebrahimi Afrouzi 8 Ai Incorporated
#9 Cong Zhao 8 Sz Dji Technology Co.
#10 Wendy Chen 8 Enel X North America
#11 Youjun Xiong 8 Ubtech Robotics Corp
#12 Jiangtao Hu 7 Baidu Usa
#13 Qiang Liu 7 Guangdong University Of Technology
#14 Alvin Chou 6 Gecko Robotics
#15 Andrew R. Stump 6 Rockwell Automation
#16 Christopher W. Como 6 Rockwell Automation
#17 David I. Ferguson 6 Google
#18 Edward A. Bryner 6 Gecko Robotics
#19 Ian Miller 6 Gecko Robotics
#20 Jiewu LENG 6 Guangdong University Of Technology
#21 Joshua Moore 6 Gecko Robotics
#22 Kevin Y. Low 6 Gecko Robotics
#23 Kirk H. Drees 6 Johnson Controls Technology
#24 Liangliang Zhang 6 Baidu Usa
#25 Logan MacKenzie 6 Gecko Robotics
#26 Mamoru Egi 6 Omron
#27 Matthew R. Ericsson 6 Rockwell Automation
#28 Mark Loosararian 6 Gecko Robotics
#29 Ryoutarou TSUNEKI 6 Fanuc
#30 Sharon M. Billi-Duran 6 Rockwell Automation
#31 Tadashi Okita 6 Fanuc
#32 Todd Joslin 6 Gecko Robotics
#33 Yizhu Gu 6 Gecko Robotics
#34 Anthony Carrara 5 Rockwell Automation
#35 Erick Michael Lavoie 5 Ford
#36 Fan Zhu 5 Baidu Usa
#37 Jee Hun Park 5 Doosan Heavy Industries & Construction Co.
#38 Jimmy Iskandar 5 Applied Materials
#39 Jiaming Tao 5 Baidu Usa
#40 Joshua Seth Herbach 5 Google
#41 John M. House 5 Johnson Controls Technology
#42 Junqing Wei 5 Motional Ad
#43 Kaoru Hirata 5 Fujikin Incorporated
#44 Kadir Liano 5 Rockwell Automation
#45 Kenneth Lyle Tyler 5 Continuous Composites
#46 Kouji Nishino 5 Fujikin Incorporated
#47 Mark J. Nixon 5 Fisher-Rosemount Systems
#48 Naoto Sonoda 5 Fanuc
#49 Robert D. Turney 5 Johnson Controls Technology
#50 Ryan Christopher Gariepy 5 Clearpath Robotics
#51 Subhrajit Roychowdhury 5 GE
#52 Timothy I. Salsbury 5 Johnson Controls Technology
#53 Yajia Zhang 5 Baidu Usa
#54 Yifei Jiang 5 Baidu Usa
#55 Young Kyu Lee 5 Its Co.
#56 You Zhou 5 Sz Dji Technology Co.
#57 Yuuki Morita 5 Fanuc
#58 Alexander B. Smith 4 Rockwell Automation
#59 Andrew Lee David Kling 4 —
#60 Andrew John Trenchard 4 Honeywell
#61 Bijan Sayyarrodsari 4 Rockwell Automation
#62 Blake L. Alfson 4 Continuous Composites
#63 Bryan R. Nussbaum 4 State Farm
#64 Christopher M. Lange 4 Graco Minnesota
#65 Daniel Gurdan 4 Intel
#66 David C. Mazur 4 Rockwell Automation
#67 David Turrentine 4 State Farm
#68 Daniel Keith Van Ostrand 4 Sigmasense, Llc.
#69 Deanna L. Stockweather 4 State Farm
#70 Dong Li 4 Baidu Usa
#71 Dongki Noh 4 LG
#72 Ellakate Wagner 4 State Farm
#73 Gail L. Carlson 4 State Farm
#74 Gerhard Isenberg 4 Vorwerk & Co. Interholding Gmbh
#75 Gerald Dale Morrison 4 Sigmasense, Llc.
#76 Hyun Sik Kim 4 Samsung
#77 Jackie O. Jordan, II 4 State Farm
#78 Jayant R. Kalagnanam 4 IBM
#79 James R. Kozloski 4 IBM
#80 Jesse Sol Levinson 4 Zoox
#81 Jeffrey W. Stoiber 4 State Farm
#82 Jennylind Sun 4 State Farm
#83 John Donovan 4 State Farm
#84 Joseph P. Harr 4 State Farm
#85 Katsuyuki Sugita 4 Fujikin Incorporated
#86 Kerstin Markwardt 4 State Farm
#87 Kenta Yamamoto 4 Fanuc
#88 Kyle C. Schiebel 4 State Farm
#89 Lorenz Hillen 4 Vorwerk & Co. Interholding Gmbh
#90 Matthew C. Putman 4 Nanotronics Imaging
#91 Makoto Yasusaka 4 Rohm Co.
#92 Michael Harris, Jr. 4 State Farm
#93 Michael D. Kalan 4 Rockwell Automation
#94 Mohammad N. Elbsat 4 Johnson Controls Tyco Ip Holdings Llp
#95 Nathaniel Fairfield 4 Google
#96 Nicholas A. Pagano 4 Graco Minnesota
#97 Nobukazu Ikeda 4 Fujikin Incorporated
#98 Osamu Nasu 4 Mitsubishi Electric
#99 Reiko Hattori 4 Omron
#100 Richard Stuart Seger, JR. 4 Sigmasense, Llc.

Top Companies

Rank ↑ Company ↕ Patents ↕
1 Fanuc 127
2 Siemens Aktiengesellschaft 62
3 IBM 53
#4 Omron 46
#5 Rockwell Automation 46
#6 GE 44
#7 Strong Force Iot Portfolio 2016 42
#8 Intel 40
#9 Honeywell 37
#10 Johnson Controls Technology 36
#11 Toyota 36
#12 Mitsubishi Electric 33
#13 Sz Dji Technology Co. 33
#14 The Boeing 29
#15 Google 29
#16 LG 29
#17 Panasonic 29
#18 Honda Motor Co. 27
#19 Ford 27
#20 Samsung 25
#21 Hitachi 22
#22 Texas Instruments 22
#23 Amazon 21
#24 Baidu Usa 21
#25 Applied Materials 17
#26 Uatc 17
#27 General Motors 17
#28 Abb Schweiz Ag 16
#29 Zoox 16
#30 Qualcomm 16
#31 Robert Bosch Gmbh 15
#32 TSMC 15
#33 Yokogawa Electric 14
#34 Fisher-Rosemount Systems 13
#35 Hyundai Motor 13
#36 Johnson Controls Tyco Ip Holdings Llp 13
#37 Kia Motors 13
#38 Nec 13
#39 State Farm 13
#40 Unknown 12
#41 Motional Ad 11
#42 Apple 10
#43 Ai Incorporated 10
#44 Enel X North America 10
#45 Fuji 10
#46 Rohm Co. 10
#47 Disney 10
#48 RTX (Raytheon) 10
#49 Causam Enterprises 9
#50 Mitsubishi Electric 9
#51 Textron Innovations 9
#52 Caterpillar 9
#53 John Deere 9
#54 Huawei 9
#55 Gopro 8
#56 ITRI 8
#57 Kubota 8
#58 Rockwell Collins 8
#59 Ubtech Robotics Corp 8
#60 Canon 8
#61 Audi Ag 7
#62 Dell Products 7
#63 Denso 7
#64 Fujitsu Limited 7
#65 Mitsubishi Power 7
#66 Nxp Usa 7
#67 Phoenix Contact 7
#68 Schneider Electric Usa 7
#69 onsemi 7
#70 Siemens Industry Software 7
#71 Stmicroelectronics Sa 7
#72 Micron 7
#73 Microsoft 7
#74 NVIDIA 7
#75 Ablic 6
#76 Alarm.Com Incorporated 6
#77 Autodesk 6
#78 Baker Hughes Holdings 6
#79 Doosan Heavy Industries & Construction Co. 6
#80 Fujifilm Business Innovation 6
#81 Gecko Robotics 6
#82 Guangdong University Of Technology 6
#83 Here Global B.V. 6
#84 Lutron Technology Company 6
#85 Positec Power Tools (Suzhou) Co. 6
#86 Ricoh Company 6
#87 Saudi Arabian Oil 6
#88 Vorwerk & Co. Interholding Gmbh 6
#89 Sony 6
#90 Ademco 5
#91 Agco 5
#92 Alps Alpine Co. 5
#93 Aveva Software 5
#94 Xiaomi 5
#95 Clearpath Robotics 5
#96 Continuous Composites 5
#97 Eaton Intelligent Power Limited 5
#98 Fujikin Incorporated 5
#99 Hamilton Sundstrand 5
#100 Hubbell Incorporated 5