Metalworking 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	Joel T. Pyper	57	Standard Lifters
2	Scott M. Breen	57	Standard Lifters
3	Giorgio Del Fabro	55	M.E.P. Macchine Elettroniche Piegatrici S. P.A.
#4	James A. McClung	55	Stolle Machinery Company
#5	Vladimir B. Ginzburg	46	International Rolling Mill
#6	Ian Kenneth Scholey	45	Stolle Machinery Company
#7	Alfredo Poloni	42	Danieli & C. Officine Meccaniche S.P.A.
#8	Thomas Flehmig	39	Thyssenkrupp Steel Europe Ag
#9	Sergey Fedorovich Golovashchenko	38	Ford
#10	T. Michael Shore	38	Morgan Construction
#11	Jürgen Seidel	37	Sms Schloemann-Siemag
#12	Karl Keller	37	Sms Schloemann-Siemag
#13	Yoshiaki Nakazawa	37	Nippon Steel
#14	Yuji Yamasaki	37	Jfe Steel
#15	Alessandro Caporusso	34	Cml International S.P.A.
#16	Joseph D. Bulso, Jr.	34	Redicon
#17	Toshiyuki Kajiwara	34	Hitachi
#18	Toyohisa Shinmiya	33	Jfe Steel
#19	Shigeru Ogawa	32	Nippon Steel
#20	Fausto Drigani	31	Danieli & C. Officine Meccaniche S.P.A.
#21	Stuart Edmund Blacket	31	Henrob Limited
#22	Andreas Noe	30	Bwg Bergwerk—Und Walzwerk—Maschinenbau Gmbh
#23	Gregory H. Butcher	30	Stolle Machinery Company
#24	Kazuhiro Shimoda	30	Sumitomo Metal Industries
#25	Tomio Yamakawa	30	Sumitomo Metal Industries
#26	Alois Seilinger	29	Primetals Technologies Austria Gmbh
#27	Harinder S. Oberoi	29	The Boeing
#28	Wojciech Gostylla	29	Henrob Limited
#29	Gerhard Ritter	28	Evg Entwicklungs—U. Verwertungs-Gesellschaft M.B.H.
#30	Klaus Ritter	28	Evg Entwicklungs—U. Verwertungs-Gesellschaft M.B.H.
#31	Takashi Miyagi	28	Nippon Steel
#32	Bernard J. Wallis	27	Livernois Research & Development
#33	Branko Sarh	27	The Boeing
#34	Hans Hofele	26	Schuler Pressen Gmbh
#35	Karl S. Fleischer	26	Stolle Machinery Company
#36	Masayuki Ishizuka	26	Sumitomo Heavy Industries
#37	William T. Saunders	26	Weirton Steeel
#38	Edwin G. Sawdon	25	Btm Company
#39	Norieda Ueno	25	Sumitomo Heavy Industries
#40	Pei-Chung Wang	25	General Motors
#41	S. George Luckey, Jr.	25	Ford
#42	Yasuharu Tanaka	25	Nippon Steel
#43	Aaron E. Carstens	24	Stolle Machinery Company
#44	Atsushi Tomizawa	24	Nippon Steel & Sumitomo Metal
#45	Ettore Cernuschi	24	Danieli & C. Officine Meccaniche S.P.A.
#46	James T. Killop	24	Anderson-Cook
#47	Takeharu Yamamoto	24	Sumitomo Electric Industries
#48	Chihiro Hayashi	23	Sumitomo Metal Industries
#49	Franco Sartorio	23	Amada Co.
#50	Georg Engel	23	Sms Schloemann-Siemag
#51	George W. Tippins	23	Tippins Incorporated
#52	Karl Thudium	23	Schuler Pressen Gmbh
#53	Kiyokazu Baba	23	Komatsu Shisakusho
#54	Marcello Del Fabro	23	M.E.P. Macchine Elettroniche Piegatrici S. P.A.
#55	Masayuki Saika	23	Sumitomo Heavy Industries
#56	Peter A. Friedman	23	Ford
#57	Toshiaki Kanemitsu	23	Kanemitsu
#58	Toshiya Suzuki	23	Nippon Steel
#59	Yasuyuki Kohno	23	Aida Engineering
#60	Johannes C. W. Bakermans	22	Amp
#61	Junichi Okubo	22	Nippon Steel
#62	Reinhold Opper	22	Newfrey
#63	Andrey M. Ilinich	21	Ford
#64	Gary A. Kruger	21	General Motors
#65	Johannes Alken	21	Sms Group Gmbh
#66	John W. Turley	21	T. Sendzimir
#67	Kazuyuki HIRATA	21	Toyota
#68	Klaus Weinzierl	21	Siemens Aktiengesellschaft
#69	Mike M. Ghiran	21	General Motors
#70	Misao Ogawa	21	Nippon Steel
#71	Ray Arbesman	21	Gripmetal Limited
#72	Rolf Noe	21	Bwg Bergwerk—Und Walzwerk—Maschinenbau Gmbh
#73	Teruaki Yogo	21	Opton Co.
#74	Arthur B. Chubb	20	Tapco International
#75	Gary A. Knudson	20	Unknown
#76	Gianpietro Benedetti	20	Danieli & C. Officine Meccaniche S.P.A.
#77	Hisanobu Kanamaru	20	Hitachi
#78	Jeffrey Lawrence Miller	20	The Boeing
#79	John E. Thomas	20	—
#80	Kazuto Kobayashi	20	Fujikoki
#81	Kenji Tamura	20	Honda Motor Co.
#82	Masaaki Mizumura	20	Nippon Steel
#83	Masaaki Sato	20	Canon
#84	Nobuyuki Hagiwara	20	Nsk
#85	Shijian Yuan	20	Dalian University Of Technology
#86	Takaaki Toyooka	20	Kawasaki Steel
#87	Tomoaki Kimura	20	Hitachi
#88	Yoshio Takakura	20	Hitachi
#89	Antonio Codatto	19	Sapim Amada S.P.A.
#90	Andrea De Luca	19	Flusso Limited
#91	Harold James Marshall	19	Belvac Production Machinery
#92	Kanji Hayashi	19	Mitsubishi Mining
#93	Rigobert Schwarze	19	—
#94	Richard L. Timp	19	Wilson Tool International
#95	Tohru Yoshida	19	Nippon Steel
#96	Egbert Frenken	18	Gustav Klauke Gmbh
#97	Giuseppe Bordignon	18	Danieli & C. Officine Meccaniche S.P.A.
#98	Gregory C. Givler	18	The Boeing
#99	Hideyuki Nikaido	18	Kawasaki Steel
#100	Ichiro Itaya	18	Kabushiki Kaisha Itaya Seisaku Sho

Top Companies

Rank ↑	Company ↕	Patents ↕
1	The Boeing	311
2	Nippon Steel	302
3	Sms Schloemann-Siemag	294
#4	General Motors	273
#5	Unknown	223
#6	Ford	218
#7	Danieli & C. Officine Meccaniche S.P.A.	204
#8	Toyota	204
#9	Amada Co.	194
#10	Honda Motor Co.	192
#11	Hitachi	191
#12	Nippon Steel & Sumitomo Metal	161
#13	Sms Group Gmbh	154
#14	Jfe Steel	152
#15	Sumitomo Metal Industries	141
#16	Kawasaki Steel	137
#17	Mannesmann Ag	132
#18	Stolle Machinery Company	122
#19	Mitsubishi Electric	117
#20	Sms Demag	113
#21	Siemens Aktiengesellschaft	96
#22	Sms Siemag Ag	94
#23	Morgan Construction	93
#24	GE	89
#25	Aida Engineering	84
#26	Aluminum Company Of America	81
#27	Newfrey	78
#28	Nsk	74
#29	Komatsu	72
#30	Kobe Steel	71
#31	Trumpf Maschinen Austria	71
#32	Ball	67
#33	Primetals Technologies Austria Gmbh	66
#34	Trumpf Werkzeugmaschinen Gmbh + Co. Kg	64
#35	Komatsu Shisakusho	63
#36	Nissan Motor Co.	60
#37	Thyssenkrupp Steel Europe Ag	60
#38	Toyo Seikan Co.	57
#39	Sumitomo Heavy Industries	56
#40	Wilson Tool International	56
#41	Hyundai Motor	55
#42	Standard Lifters	55
#43	M.E.P. Macchine Elettroniche Piegatrici S. P.A.	53
#44	Benteler Automobiltechnik Gmbh	52
#45	Crown Packaging Technology	52
#46	Daimlerchrysler Ag	52
#47	National Machine	52
#48	Rolls-Royce Plc	51
#49	Kobe Steel	50
#50	Kocks Technik Gmbh & Co Kg	50
#51	Carrier	49
#52	Denso	48
#53	Magna International	48
#54	Emhart	47
#55	Schuler Pressen Gmbh	46
#56	Dana Limited	45
#57	L. Schuler Gmbh	45
#58	Illinois Tool Works	44
#59	Belvac Production Machinery	42
#60	Rockwell Automation	42
#61	Sms Meer Gmbh	42
#62	Mitsubishi Mining	41
#63	RTX (Raytheon)	41
#64	Alcoa	40
#65	Primetals Technologies Germany Gmbh	40
#66	Henrob Limited	39
#67	Btm Company	38
#68	Westinghouse Electric	38
#69	Caterpillar	38
#70	Crown Cork & Seal Technologies	37
#71	Kabushiki Kaisha Toshiba	37
#72	Nkk Co.	37
#73	Sumitomo Electric Industries	37
#74	Usui Kokusai Sangyo Kaisha Limited	35
#75	Adolph Coors	34
#76	Hidaka Seiki Kabushiki Kaisha	34
#77	Showa Denko K.K.	34
#78	Amada Metrecs Co.	33
#79	Bwg Bergwerk—Und Walzwerk—Maschinenbau Gmbh	33
#80	Redicon	33
#81	Wafios Aktiengesellschaft	33
#82	Anderson-Cook	32
#83	The Bradbury Co.	32
#84	Toshiba Mitsubishi-Electric Industrial Systems	32
#85	Elpatronic Ag	31
#86	L&P Property Management	31
#87	Usm Holding Ag	31
#88	Kawasaki	30
#89	Kia Motors	30
#90	Novelis	30
#91	Schuler Pressen	30
#92	Siemens Industry	30
#93	United States Surgical	30
#94	American Can	29
#95	Kanemitsu	29
#96	Nisshin Steel Co.	29
#97	Hatebur Umformmaschinen Ag	28
#98	Nhk Spring Co.	28
#99	BMW	27
#100	International Rolling Mill	27

Metalworking Patent Leaders All Time

Patents per Year

Top Inventors

Top Companies