Metal casting Patent Leaders 2020

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	John Joseph Marcin	8	RTX (Raytheon)
2	Changhai Li	6	Citic Dicastal Co.
3	Grant O. Cook, III	6	Halliburton Energy Services
#4	Misao Fujikawa	6	Sodick Co.
#5	Srikanth Chandrudu Kottilingam	6	GE
#6	Steven J. Bullied	6	RTX (Raytheon)
#7	Douglas Gerard Konitzer	5	GE
#8	Emanuel M. Sachs	5	Desktop Metal
#9	Gregory Terrence Garay	5	GE
#10	Ngadia Taha Niane	5	Safran
#11	Richard Remo Fontana	5	Desktop Metal
#12	Brian Lee Tollison	4	GE
#13	David Grange	4	Safran
#14	Dexi Du	4	Citic Dicastal Co.
#15	Martin Hosek	4	Persimmon Technologies
#16	Mark Kevin Meyer	4	GE
#17	Ryan C. Breneman	4	RTX (Raytheon)
#18	Said Boukerma	4	Safran
#19	Sergey Mironets	4	RTX (Raytheon)
#20	Shinichi Fukunaga	4	Krosakiharima
#21	Shuji Okazaki	4	Sodick Co.
#22	Tadashi Nishida	4	Sintokogio
#23	William Thomas Carter	4	GE
#24	Yan Cui	4	GE
#25	Aaron T. Nardi	3	RTX (Raytheon)
#26	Adrien Bernard Vincent Rollinger	3	Safran
#27	Andrew Sherman	3	Terves
#28	Arnaud Ballu	3	Constellium Issoire
#29	Bernard Valentin	3	Constellium Issoire
#30	Clayton A. Ownby	3	Halliburton Energy Services
#31	Daniel Brendan Voglewede	3	Halliburton Energy Services
#32	Frederick A. Flitsch	3	Johnson & Johnson
#33	James Tilsley Auxier	3	RTX (Raytheon)
#34	Jeffrey G. Thomas	3	—
#35	Joan McKiever	3	GE
#36	Joseph P. Schramm	3	Caltech
#37	Joseph Toussaint Tami Lizuzu	3	Safran Aircraft Engines
#38	Justin Mamrak	3	GE
#39	Kazuyuki Tsutsumi	3	Kobe Steel
#40	Kaiqing Wang	3	Citic Dicastal Co.
#41	Kenichi Inoue	3	Hitachi
#42	Marios D. Demetriou	3	Caltech
#43	Michael Andrew Gibson	3	Desktop Metal
#44	Orlando Rios	3	Ut-Battelle
#45	Ramzi Bohli	3	Safran
#46	Robert A. Flitsch	3	Unknown
#47	Robert Bruce Wagstaff	3	Novelis
#48	Scott Alan Gold	3	GE
#49	Soizic Blais	3	Constellium Issoire
#50	Sripati Sah	3	Persimmon Technologies
#51	Toshiyuki Hyodo	3	Sintokogio
#52	William L. Johnson	3	Caltech
#53	Xianyi Xu	3	Citic Dicastal Co.
#54	Zhiyue Xu	3	—
#55	Adam F. Gross	2	Hrl Laboratories
#56	Alexander Staroselsky	2	RTX (Raytheon)
#57	Andrew David Deal	2	GE
#58	Anastasios John Hart	2	MIT
#59	Andrew J. Heidloff	2	Iowa State University
#60	Andrea Pezzoli	2	—
#61	Arito Mizobe	2	Krosakiharima
#62	Atsushi Ebara	2	Dowa Electronics Materials Co.
#63	Bernard Patrick Bewlay	2	GE
#64	Brian Michael Ellis	2	GE
#65	Christoffer Bay	2	Disa Industries A/S
#66	Christian Höckling	2	Thyssenkrupp Steel Europe Ag
#67	Cheol Park	2	Samsung
#68	Chie Sugama	2	Showa Denko Materials Co.
#69	Cheng-Kuan Wu	2	TSMC
#70	Claude Estournes	2	CNRS
#71	David Richard Barnhart	2	GE
#72	Dai Ishikawa	2	Asm Ip Holding B.V.
#73	Daniel V. Viens	2	RTX (Raytheon)
#74	Denis B. Christopherson, JR.	2	—
#75	Diana Giulietti	2	Hamilton Sundstrand
#76	Didier Maurice Marceau Guerche	2	Safran
#77	Diether Koch	2	Ask Chemicals Gmbh
#78	Dilip M. Shah	2	RTX (Raytheon)
#79	Donnell Eugene Crear	2	GE
#80	Dustin W. Davis	2	RTX (Raytheon)
#81	Etienne Blanchet	2	Compagnie Generale Des Etablissements Michelin
#82	Fumihiro Maezawa	2	Sanyo Special Steel Co.
#83	Garrett T. Olsen	2	Halliburton Energy Services
#84	Geoffroy CHEVALLIER	2	CNRS
#85	Gilles L'Esperance	2	—
#86	Gilles Martin	2	Disney
#87	Gregory Thomas Mark	2	Markforged
#88	Hak Soo Kim	2	Hyundai Motor
#89	Harry Lester Kington	2	Honeywell
#90	Herbert Hanrieder	2	Mtu Aero Engines Ag
#91	Hidetaka KATOGI	2	Mitsubishi Electric
#92	Hiroshi Morikawa	2	Honda Motor Co.
#93	Hideo Nakako	2	Hitachi Chemical Company
#94	Hidefumi NAKAMURA	2	Seiko Epson
#95	Hideki Ohara	2	Sumitomo Metal Mining Co.
#96	Hirotoshi SAITO	2	Dowa Holdings Co.
#97	Hideo Sakai	2	Mitsui Toatsu Chemicals, Incorporated
#98	Hou T. Ng	2	HP
#99	Hyo-Moon Joo	2	Hyundai Motor
#100	Ian W. Donaldson	2	Gkn Sinter Metals

Top Companies

Rank ↑	Company ↕	Patents ↕
1	GE	50
2	RTX (Raytheon)	32
3	Safran Aircraft Engines	16
#4	Sodick Co.	12
#5	Toyota	12
#6	Sintokogio	10
#7	Hitachi	9
#8	Safran	9
#9	Citic Dicastal Co.	8
#10	Desktop Metal	8
#11	Halliburton Energy Services	7
#12	Honeywell	7
#13	Mitsubishi Materials	6
#14	Ford	6
#15	Hyundai Motor	5
#16	Jfe Steel	5
#17	Nemak, S.A.B. De C.V.	5
#18	Rolls-Royce Plc	5
#19	Siemens Aktiengesellschaft	5
#20	General Motors	5
#21	Baker Hughes Holdings	4
#22	BMW	4
#23	Constellium Issoire	4
#24	Diamet	4
#25	Fujiwa Denki Co.	4
#26	Kia Motors	4
#27	Krosakiharima	4
#28	Mitsubishi Electric	4
#29	Murata Manufacturing Co.	4
#30	Persimmon Technologies	4
#31	Seiko Epson	4
#32	Sms Group Gmbh	4
#33	Sumitomo Metal Mining Co.	4
#34	Tbs Engineering Limited	4
#35	Tdk	4
#36	Ask Chemicals Gmbh	3
#37	Compagnie Generale Des Etablissements Michelin	3
#38	Danieli & C. Officine Meccaniche S.P.A.	3
#39	Dowa Electronics Materials Co.	3
#40	Gkn Sinter Metals	3
#41	Glassimetal Technology	3
#42	Hamilton Sundstrand	3
#43	Hitachi Chemical Company	3
#44	Iowa State University	3
#45	Kennametal	3
#46	Kobe Steel	3
#47	Mtu Aero Engines Ag	3
#48	Mueller International	3
#49	Novelis	3
#50	Sandvik Intellectual Property Ab	3
#51	Sanyo Special Steel Co.	3
#52	Sumitomo Electric Industries	3
#53	Terves	3
#54	University Of Texas System	3
#55	Ut-Battelle	3
#56	LG	3
#57	Apple	2
#58	Applied Materials	2
#59	Abb Schweiz Ag	2
#60	Almex Usa	2
#61	Amastan Technologies	2
#62	CNRS	2
#63	Disa Industries A/S	2
#64	Eos Gmbh Electro Optical Systems	2
#65	Esco Group	2
#66	Gkn Sinter Metals Engineering Gmbh	2
#67	H.C. Starck	2
#68	Höganäs Ab (Publ)	2
#69	Hrl Laboratories	2
#70	Hüttenes-Albertus Chemische Werke Gesellschaft Mit Beschränkter Haftung	2
#71	Ihi	2
#72	Iljin Electric Co.	2
#73	King Saud University	2
#74	Magna International	2
#75	Markforged	2
#76	Miba Sinter Austria Gmbh	2
#77	Michelin	2
#78	Minebea Mitsumi	2
#79	Molten Metal Equipment Innovations	2
#80	Nippon Steel	2
#81	Nippon Steel Stainless Steel	2
#82	North University Of China	2
#83	Ntn	2
#84	Nucor	2
#85	Osaka University	2
#86	Oskar Frech Gmbh + Co. Kg	2
#87	Plansee Se	2
#88	Refractory Intellectual Property	2
#89	Sulzer Management Ag	2
#90	Sumitomo Electric Hardmetal	2
#91	Tanaka Kikinzoku Kogyo K.K.	2
#92	Tenneco Automotive Operating Company	2
#93	US Army	2
#94	Thyssenkrupp Steel Europe Ag	2
#95	Universite Paul Sabatier—Toulouse Iii	2
#96	University Of Yamanashi	2
#97	Caterpillar	2
#98	AT&T	1
#99	5N Plus	1
#100	Advanced Research For Manufacturing Systems	1

Metal casting Patent Leaders in 2020 2020

Patents per Year

Top Inventors

Top Companies