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

Metalworking Patent Leaders in 2023 2023

Primary CPC class B21 · 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 711 patents in 1999.peak 7111996: 473 patents19961997: 531 patents1998: 624 patents1999: 711 patents19992000: 636 patents2001: 629 patents2002: 532 patents20022003: 528 patents2004: 497 patents2005: 386 patents20052006: 557 patents2007: 450 patents2008: 362 patents20082009: 337 patents2010: 402 patents2011: 417 patents20112012: 523 patents2013: 562 patents2014: 487 patents20142015: 524 patents2016: 549 patents2017: 599 patents20172018: 507 patents2019: 628 patents2020: 582 patents20202021: 594 patents2022: 641 patents2023: 612 patents20232024: 529 patents2025: 502 patents2025

Top Inventors

Rank ↑ Inventor ↕ Patents ↕ Primary Company ↕
1 Ian Kenneth Scholey 9 Stolle Machinery Company
2 Alois Seilinger 5 Primetals Technologies Austria Gmbh
3 Joel T. Pyper 5 Standard Lifters
#4 Scott M. Breen 5 Standard Lifters
#5 Tao Wang 5 BOE
#6 ANTONIUS WOLKING 4 Federal-Mogul Valvetrain Gmbh
#7 Joseph Gambino 4 Rogue Fabrication
#8 Karl S. Fleischer 4 Stolle Machinery Company
#9 Masayuki Ishizuka 4 Sumitomo Heavy Industries
#10 Norieda Ueno 4 Sumitomo Heavy Industries
#11 Peter J. Davies 4 Milwaukee Electric Tool
#12 Qingxue Huang 4 Taiyuan University Of Technology
#13 Russell Bauer 4 Stolle Machinery Company
#14 Shijian Yuan 4 Dalian University Of Technology
#15 Toyohisa Shinmiya 4 Jfe Steel
#16 Yuji Yamasaki 4 Jfe Steel
#17 Yusuke Yoshida 4 Nidec
#18 Zhongkai Ren 4 Taiyuan University Of Technology
#19 Alexander Gohr 3 Sms Group Gmbh
#20 Atsushi Ishii 3 Sharp Kabushiki Kaisha
#21 August Sprock 3 Sms Group Gmbh
#22 Christoph HASSEL 3 Sms Group Gmbh
#23 Daisuke Nikkuni 3 Nippon Steel
#24 Erich Opitz 3 Primetals Technologies Austria Gmbh
#25 Eric D. Smith 3 Keystone Tower Systems
#26 Gregory H. Butcher 3 Stolle Machinery Company
#27 GUIDO BAYARD 3 Federal-Mogul Valvetrain Gmbh
#28 Hiroto Miyake 3 Japan Display
#29 Jianchao Han 3 Taiyuan University Of Technology
#30 Johannes Alken 3 Sms Group Gmbh
#31 Kei Yamauchi 3 Sumitomo Heavy Industries
#32 Kimihiro Nogiwa 3 Sumitomo Heavy Industries
#33 Klaus Weinzierl 3 Siemens Aktiengesellschaft
#34 Le Zhang 3 Sap Se
#35 Lukas Pichler 3 Primetals Technologies Austria Gmbh
#36 Masayuki Saika 3 Sumitomo Heavy Industries
#37 Richard James Edward Mercer 3 Stolle Machinery Company
#38 Shiro Hayashi 3 Toyota Industries
#39 Thorsten Matthias 3 Federal-Mogul Valvetrain Gmbh
#40 Aaron E. Carstens 2 Stolle Machinery Company
#41 Akihiro Ide 2 Daihen
#42 Akira Kasahara 2 Max Co.
#43 Alan W. Cleveland 2 Stolle Machinery Company
#44 Alan S. Draper 2 The Boeing
#45 Alfredo Jose Gerosa 2 The Boeing
#46 Allen Guernsey 2 Accurpress America
#47 Alfred Haselboeck 2 Trumpf Maschinen Austria
#48 Amanda Kay Freis 2 Ford
#49 Anton Holzhauer 2 Robert Bosch Gmbh
#50 Anthony D. Schwartz 2 Wilson Tool International
#51 Bhaven Chakravarti 2 Lummus Crest
#52 Byung Gil Yoo 2 Hyundai Steel
#53 Cameron Banga 2 Contitech Usa
#54 Christoph Eusterwiemann 2 Broetje-Automation Gmbh
#55 Chee Woong Song 2 Hyundai Steel
#56 Dapeng Duan 2 Penn Engineering & Manufacturing
#57 Davide Antonio Olivieri 2 Aktiebolaget Skf
#58 Dandan Zhang 2 Tyco Electronics (Shanghai) Co.
#59 Dajun Zhou 2 Fca Us Llc.
#60 Denis FACCENDA 2 Komax Holding Ag
#61 Dongping He 2 Taiyuan University Of Technology
#62 Do Hak Kim 2 Hyundai Steel
#63 Edvin List Clausen 2 Benteler Automobiltechnik Gmbh
#64 Elliot Jones 2 Atlas Copco Ias Uk Limited
#65 Evangelos Liasi 2 Ford
#66 Felix L. Sorkin 2 Generate Technologies
#67 Fengyu Xu 2 Nanjing University Of Posts And Telecommunications
#68 Friedrich Moser 2 Robert Bosch Gmbh
#69 George Barton 2 Keter Plastic
#70 Gengliang Liu 2 Yanshan University
#71 Gerald Meador 2 Belvac Production Machinery
#72 Giorgio Del Fabro 2 M.E.P. Macchine Elettroniche Piegatrici S. P.A.
#73 Guoping Jiang 2 Nanjing University Of Posts And Telecommunications
#74 Guofen Luo 2 —
#75 Harinder S. Oberoi 2 The Boeing
#76 Hailong Zhang 2 Cisco
#77 Hirokatsu Akiba 2 Honda Motor Co.
#78 Hideyuki FUJISAWA 2 Noritz
#79 Hirotaka Miwa 2 Nissan Motor Co.
#80 Hideki Okada 2 Kyocera Document Solutions
#81 Hongyan Guo 2 BOE
#82 Hongchao Li 2 Panasonic
#83 Hyeong Hyeop Do 2 Hyundai Steel
#84 Ichiro Kusakari 2 Max Co.
#85 James A. McClung 2 Stolle Machinery Company
#86 Jeffrey Lawrence Miller 2 The Boeing
#87 Jizhe Quan 2 Baoshan Iron & Steel Co.
#88 Jiaxuan Yang 2 Yanshan University
#89 Jonathan Dube 2 9172-9863 Quebec
#90 Joachim Holzhauer 2 —
#91 Jose Lozano Bonet 2 Lapmaster Wolters Gmbh
#92 Karl Badegruber 2 Trumpf Maschinen Austria
#93 Kaiping Li 2 Cypress Semiconductor
#94 Kabir Secibovic 2 Trumpf Maschinen Austria
#95 Kazuma Yamaguchi 2 Denso
#96 Kenichi Arai 2 Olympus
#97 Kevin Marion Barrick 2 The Boeing
#98 KEITARO FUJII 2 Panasonic
#99 Kei Matsumoto 2 Komatsu Electronic Metals Co.
#100 Kenji Matsutani 2 Nintendo Co.

Top Companies

Rank ↑ Company ↕ Patents ↕
1 Nippon Steel 19
2 Sms Group Gmbh 18
3 Stolle Machinery Company 14
#4 Jfe Steel 13
#5 The Boeing 10
#6 Toyota 10
#7 Milwaukee Electric Tool 9
#8 Primetals Technologies Austria Gmbh 9
#9 General Motors 8
#10 Honda Motor Co. 7
#11 Max Co. 7
#12 Sumitomo Heavy Industries 7
#13 Amada Co. 6
#14 Atlas Copco Ias Uk Limited 6
#15 Danieli & C. Officine Meccaniche S.P.A. 6
#16 Ford 6
#17 Aida Engineering 5
#18 Baoshan Iron & Steel Co. 5
#19 Hyundai Motor 5
#20 Mitsubishi Electric 5
#21 Primetals Technologies Germany Gmbh 5
#22 Standard Lifters 5
#23 Taiyuan University Of Technology 5
#24 Te Connectivity Co. 5
#25 Unknown 5
#26 Yanshan University 5
#27 Aktiebolaget Skf 4
#28 Belvac Production Machinery 4
#29 Citic Dicastal Co. 4
#30 Federal-Mogul Valvetrain Gmbh 4
#31 Hyundai Steel 4
#32 Keystone Tower Systems 4
#33 Nsk 4
#34 Rogue Fabrication 4
#35 Taiyuan University Of Science And Technology 4
#36 Asmag-Holding Gmbh 3
#37 Benteler Automobiltechnik Gmbh 3
#38 Kia Motors 3
#39 Komax Holding Ag 3
#40 M.E.P. Macchine Elettroniche Piegatrici S. P.A. 3
#41 Penn Engineering & Manufacturing 3
#42 Posco Co. 3
#43 Sandvik Intellectual Property Ab 3
#44 Toshiba Mitsubishi-Electric Industrial Systems 3
#45 Trumpf Maschinen Austria 3
#46 Accurpress America 2
#47 Airbus Operations Limited 2
#48 Autotech Engineering S.L. 2
#49 BMW 2
#50 Blue Solutions Canada 2
#51 Bnsf Railway 2
#52 Broetje-Automation Gmbh 2
#53 Contitech Usa 2
#54 Dalian University Of Technology 2
#55 Fca Us Llc. 2
#56 Grammer Interior Components Gmbh 2
#57 Hitachi 2
#58 Hydro Extruded Solutions As 2
#59 Kawasaki 2
#60 Kia 2
#61 Kunshan League Automechanism Co. 2
#62 Lapmaster Wolters Gmbh 2
#63 Lisi Aerospace 2
#64 Magnesium Products Of America 2
#65 Makita 2
#66 Mbk Maschinenbau Gmbh 2
#67 Nanjing University Of Posts And Telecommunications 2
#68 Newfrey 2
#69 Nexans 2
#70 Nhk Spring Co. 2
#71 Nissan Motor Co. 2
#72 Noritz 2
#73 Northwestern University 2
#74 Primetals Technologies Usa 2
#75 Proterial 2
#76 Robert Bosch Gmbh 2
#77 Saudi Arabian Oil 2
#78 Sintokogio 2
#79 Tata Steel Nederland Technology B.V. 2
#80 Tyco Electronics (Shanghai) Co. 2
#81 Wilson Tool International 2
#82 BOE 2
#83 Panasonic 2
#84 Abb Schweiz Ag 1
#85 Accelerated Systems 1
#86 Adval Tech Holding Ag 1
#87 Agathon Ag, Maschinenfabrik 1
#88 Airbus Operations Sas 1
#89 Aisin Aw Co. 1
#90 Aisin Keikinzoku Co. 1
#91 Alcoa 1
#92 Allfast Fastening Systems 1
#93 Allgaier Werke Gmbh 1
#94 American Axle & Manufacturing 1
#95 Aperam 1
#96 A. Raymond Et Cie 1
#97 Arcelormittal 1
#98 Ardagh Mp Group Netherlands B.V. 1
#99 Arnold Umformtechnik Gmbh & Co. Kg 1
#100 Asahi-Seiki Manufacturing Co. 1