Machine tools Patent Leaders | Patent Leaderboard

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: 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025

Patents per Year

Top Inventors

Rank ↑	Inventor ↕	Patents ↕	Primary Company ↕
1	Gil Hecht	156	Iscar
2	Kiyoshi Inoue	156	Inoue-Japax Research Incorporated
3	Steven R. Peters	118	Lincoln Global
#4	Gunter H. Rohm	102	Rohm Co.
#5	Amir Satran	94	Iscar
#6	Richard Martin Hutchison	81	Illinois Tool Works
#7	Franz Haimer	80	Franz Haimer Maschinenbau Kg
#8	Pei-Chung Wang	78	General Motors
#9	Bruce Patrick Albrecht	77	Illinois Tool Works
#10	Dieter Kress	73	Mapal Fabrik Für Präzisionswerkzeuge Dr. Kress Kg
#11	Todd Earl Holverson	72	Illinois Tool Works
#12	Christopher Hsu	70	Illinois Tool Works
#13	David R. Sigler	69	General Motors
#14	James Lee Uecker	65	Illinois Tool Works
#15	Elliott K. Stava	63	Lincoln Global
#16	Robert A. Erickson	63	Kennametal
#17	Koichiro Tanaka	60	Semiconductor Energy Laboratory
#18	Masakuni Ezumi	60	Hitachi
#19	Anongsack Paseuth	59	Sumitomo Electric Hardmetal
#20	Atsuhiro Kawamoto	59	Panasonic
#21	Junji Fujiwara	58	Panasonic
#22	Robert R. Davidson	56	Illinois Tool Works
#23	Keiji Nomaru	54	Disco
#24	Edward A. Enyedy	53	Lincoln Global
#25	Joseph A. Daniel	53	Lincoln Global
#26	Srikanth Chandrudu Kottilingam	52	GE
#27	Shinya Imamura	51	Sumitomo Electric Hardmetal
#28	Hans-Henning Winkler	48	Chiron-Werke Gmbh & Co. Kg
#29	Bernard J. Vogel	47	Illinois Tool Works
#30	Haruki Obara	47	Fanuc
#31	Peter A. Gruber	47	IBM
#32	Steven Edward Barhorst	47	Hobart Brothers
#33	William T. Matthews	47	Lincoln Global
#34	George D. Blankenship	46	Lincoln Global
#35	Akihiro Goto	45	Mitsubishi Electric
#36	Craig Steven Knoener	45	Illinois Tool Works
#37	Friedrich Haberle	45	Mapal Fabrik Für Präzisionswerkzeuge Dr. Kress Kg
#38	Gerald J. Bruck	45	Siemens Energy
#39	Hermann J. Stadtfeld	45	The Gleason Works
#40	Bin Wei	44	GE
#41	Blair E. Carlson	44	General Motors
#42	Susumu Okuno	44	Sumitomo Electric Hardmetal
#43	Takuji Magara	44	Mitsubishi Electric
#44	Yan Cui	44	GE
#45	Hiroshi Morikazu	43	Disco
#46	Michael B. Ball	43	Micron
#47	Hiroyoshi Kawasaki	42	Senju Metal Industry Co.
#48	Howard Mizuhara	42	Gte Products
#49	Tatsuo Arai	42	Mitsubishi Materials
#50	William Joshua Becker	42	Illinois Tool Works
#51	Yoshitaka Aoyama	42	Unknown
#52	Michael J. Karagoulis	41	General Motors
#53	Michael L. O'Banion	41	Black & Decker
#54	Helmut F. Link	40	Index-Werke Gmbh & Co. Kg Hahn & Tessky
#55	Scott M. Packer	40	Smith International
#56	Jean-Luc Dufour	39	Kennametal
#57	Mario Anthony Amata	39	Hobart Brothers
#58	Satoru Kukino	39	Sumitomo Electric Hardmetal
#59	Stephen F. Gass	39	Sd3
#60	David J. Wills	38	Tdy Industries
#61	Hisashi Hori	38	Nippon Light Metal Company
#62	Nobushiro Seo	38	Nippon Light Metal Company
#63	Paul E. Denney	38	Loma Linda University Medical Center
#64	Rinsei Ikeda	38	Jfe Steel
#65	Shunpei Yamazaki	36	Semiconductor Energy Laboratory
#66	Per Hansson	35	—
#67	X. Daniel Fang	35	Tdy Industries
#68	Ahmed Kamel	34	Siemens Energy
#69	Yasuki Kido	34	Sumitomo Electric Hardmetal
#70	Yasushi Mukai	34	Panasonic
#71	Akihiro Satou	33	Hitachi
#72	Anthony Van Bergen Salsich	33	Illinois Tool Works
#73	Brian Lee Tollison	33	GE
#74	Hans-Dieter Mack	33	Rohm Co.
#75	Jae-Woong Nah	33	IBM
#76	Kazuya Hirata	33	Disco
#77	Koichiro Kitamura	33	Kitamura Machinery Co.
#78	Russell J. Steel	33	Megastir Technologies
#79	Daniel Puzio	32	Black & Decker
#80	James N. Buttrick	32	The Boeing
#81	Joseph C. Bundy	32	Hobart Brothers
#82	Ming-Lu Yang	32	Foxconn
#83	Quinn William Schartner	32	Illinois Tool Works
#84	Takeshi Sakamoto	32	Hamamatsu Photonics K.K.
#85	Toshiyuki Kani	32	Makita
#86	Yoshihiro Yamaguchi	32	Kabushiki Kaisha Toshiba
#87	Daniel C. Fosbinder	31	Illinois Tool Works
#88	Etsuo Yamazaki	31	Fanuc
#89	John J. Borzym	31	—
#90	Sergei I. Kuchuk-Yatsenko	31	Institut Elekctrosvarki Imeni E. O. Patona Akademii Mauk Ukrainskoi Ssr
#91	Shinsuke Sugata	31	Horkos
#92	Sture Sjöö	31	Sandvik Intellectual Property Ab
#93	Tsunehiko Yamazaki	31	Yamazaki Mazak
#94	Xinbing Liu	31	Sumitomo Electric Industries
#95	Yuji Kaneko	31	Sodick Co.
#96	Bruce J. Chantry	30	Lincoln Global
#97	Dechao Lin	30	GE
#98	Hirohisa Ishi	30	Kyocera
#99	Marc Lee Denis	30	Illinois Tool Works
#100	Roger D. Neitzell	30	Milwaukee Electric Tool

Top Companies

Rank ↑	Company ↕	Patents ↕
1	Illinois Tool Works	1,276
2	GE	1,096
3	Fanuc	896
#4	Kennametal	791
#5	Mitsubishi Electric	779
#6	The Boeing	767
#7	Lincoln Global	684
#8	Unknown	595
#9	RTX (Raytheon)	575
#10	Robert Bosch Gmbh	562
#11	Honda Motor Co.	532
#12	General Motors	525
#13	Black & Decker	502
#14	Iscar	483
#15	IBM	478
#16	Sumitomo Electric Industries	476
#17	Toyota	342
#18	Sandvik Intellectual Property Ab	313
#19	Kyocera	311
#20	Milwaukee Electric Tool	302
#21	Hitachi	299
#22	Disco	286
#23	Samsung	283
#24	Sandvik Ab	273
#25	Panasonic	269
#26	Rolls-Royce Plc	266
#27	Ford	260
#28	Mitsubishi Materials	246
#29	Sumitomo Electric Hardmetal	234
#30	Westinghouse Electric	225
#31	Senju Metal Industry Co.	210
#32	Siemens Aktiengesellschaft	206
#33	Makita	204
#34	Shinkawa	198
#35	Tungaloy	194
#36	Amada Co.	192
#37	Hilti Aktiengesellschaft	190
#38	Seco Tools Ab	183
#39	Kobe Steel	180
#40	Caterpillar	167
#41	Inoue-Japax Research Incorporated	159
#42	Micron	157
#43	Electro Scientific Industries	152
#44	Foxconn	145
#45	The Gleason Works	142
#46	Kabushiki Kaisha Toshiba	138
#47	Fujitsu Limited	131
#48	Honeywell	128
#49	Nippon Steel	127
#50	Fronius International Gmbh	126
#51	Hyundai Motor	125
#52	Denso	124
#53	Sodick Co.	124
#54	ITRI	122
#55	Kawasaki	121
#56	Toshiba Kikai	121
#57	Applied Materials	120
#58	Trumpf Werkzeugmaschinen Gmbh + Co. Kg	120
#59	Makino Milling Machine Co.	117
#60	Yamazaki Mazak	116
#61	Hypertherm	113
#62	Intel	104
#63	Mtu Aero Engines Ag	103
#64	Okuma	103
#65	Siemens Energy	101
#66	US Air Force	101
#67	Canon	100
#68	Lockheed Martin	99
#69	Hamamatsu Photonics K.K.	98
#70	Mori Seiki Co.	96
#71	Nissan Motor Co.	96
#72	Texas Instruments	96
#73	Citizen Watch Co.	94
#74	Brother Kogyo	91
#75	Mapal Fabrik Für Präzisionswerkzeuge Dr. Kress Kg	88
#76	Hitachi Koki Co.	87
#77	Jfe Steel	86
#78	Kulicke And Soffa Industries	85
#79	Daihen	84
#80	Osg	84
#81	Semiconductor Energy Laboratory	84
#82	Robert Bosch Tool	83
#83	Snecma	82
#84	Chiron-Werke Gmbh & Co. Kg	80
#85	Motorola	80
#86	Power Tool Holders Incorporated	80
#87	Rockwell Automation	80
#88	The Esab Group	80
#89	Esab Ab	78
#90	US Dept of Energy	77
#91	3M	76
#92	Toyoda Koki Kabushiki Kaisha	76
#93	Charmilles Technologies S.A.	75
#94	Mazda Motor	75
#95	NASA	75
#96	Hobart Brothers	74
#97	Corning Incorporated	72
#98	Gte Valenite	72
#99	Dmg Mori Co.	71
#100	Emerson Electric	69

Machine tools Patent Leaders All Time

Patents per Year

Top Inventors

Top Companies