Ceramics and cement Patent Leaders

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	Jiten Chatterji	71	Halliburton Energy Services
2	Marc S. Newkirk	68	Lanxide Technology
3	Akira Yamakawa	60	Sumitomo Electric Industries
#4	Michael K. Aghajanian	56	Lanxide Technology
#5	Bobby J. King	53	Halliburton Energy Services
#6	Lance E. Brothers	51	Halliburton Energy Services
#7	Aleksander J. Pyzik	48	Dow Global Technologies
#8	Gregory Albert Merkel	48	Corning Incorporated
#9	Wayde R. Schmidt	48	RTX (Raytheon)
#10	Satoru Kukino	46	Sumitomo Electric Hardmetal
#11	Terry D. Claar	43	Lanxide Technology
#12	Dilip K. Chatterjee	42	Eastman Kodak
#13	Yuji Katsuda	41	Ngk Insulators
#14	D. Chad Brenneis	40	Halliburton Energy Serives
#15	Glen Harold Kirby	40	GE
#16	Krishan Lal Luthra	40	GE
#17	B. Raghava Reddy	39	Saudi Arabian Oil
#18	Douglas Munroe Beall	36	Corning Incorporated
#19	Patrick David Tepesch	36	Corning Incorporated
#20	Mohammed Maslehuddin	35	KFUPM
#21	Thomas Jason Pisklak	35	Halliburton Energy Services
#22	Andrew J. Lazur	34	—
#23	Danny R. White	34	Lanxide Technology
#24	Jainagesh A. Sekhar	34	Moltech Invent S.A.
#25	Andrew W. Urquhart	33	Lanxide Technology
#26	Harunobu Sano	33	Murata Manufacturing Co.
#27	Paul Sheedy	33	RTX (Raytheon)
#28	Syamal K. Ghosh	33	Eastman Kodak
#29	Craig W. Roddy	32	Halliburton Energy Services
#30	Michael David Hill	32	Skyworks Solutions
#31	Roger S. Cromwell	32	Halliburton Energy Services
#32	Tsuyoshi Hirata	32	Nippon Shokubai Co.
#33	Christopher R. Kennedy	31	Lanxide Technology
#34	Jennifer Y. Sun	31	Applied Materials
#35	Katsumi Okamura	31	Sumitomo Electric Hardmetal
#36	Michiyasu Komatsu	31	Kabushiki Kaisha Toshiba
#37	Qiang Yu	31	United States Gypsum
#38	Richard Wesley Jackson	31	RTX (Raytheon)
#39	Xia Tang	31	RTX (Raytheon)
#40	Ashok Santra	30	Halliburton Energy Services
#41	Ellis Gartner	30	W.R. Grace & Co.-Conn.
#42	Romeo Ilarian Ciuperca	30	—
#43	Samuel J. Lewis	30	Halliburton Energy Services
#44	Irene Spitsberg	29	GE
#45	Tsutomu Nanataki	29	Ngk Insulators
#46	Vahit Atakan	29	Solidia Technologies
#47	Cressie E. Holcombe, Jr.	28	Martin Marietta Energy Systems
#48	Kang N. Lee	28	—
#49	Shinji Kawasaki	28	Ngk Insulators
#50	Ashish Dubey	27	United States Gypsum
#51	Neal S. Berke	27	W.R. Grace & Co.-Conn.
#52	Ratnesh K. Dwivedi	27	Lanxide Technology
#53	Sungbo Shim	27	Rolls-Royce High Temperature Composites
#54	Thomas M. Vickers, Jr.	27	Construction Research & Technology Gmbh
#55	Akira Sato	26	Tdk
#56	Andreas Kienzle	26	Sgl Carbon Ag
#57	Gerhard Albrecht	26	Construction Research & Technology Gmbh
#58	Kenneth M. Cowan	26	Shell Oil Compny
#59	William B. Johnson	26	Lanxide Technology
#60	Andre Ezis	25	Ford
#61	Brent R. Constantz	25	Noria
#62	John M. Guynn	25	Roman Cement
#63	Koichi Niihara	25	Unknown
#64	Olivier Citti	25	Saint-Gobain Ceramics & Plastics
#65	Brett Allen Boutwell	24	GE
#66	Eric Bouillon	24	Safran Ceramics
#67	Masaya Miyake	24	Sumitomo Electric Industries
#68	Sergej-Tomislav Buljan	24	Gte Laboratories Incorporated
#69	Vittorio de Nora	24	Moltech Invent S.A.
#70	Yasushi Noguchi	24	Ngk Insulators
#71	Horst Herchenbach	23	Klockner-Humboldt-Deutz Ag
#72	Hongyu Wang	23	GE
#73	Jacques Thebault	23	Societe Europenne De Propulsion
#74	Julin Wan	23	GE
#75	Milivoj Konstantin Brun	23	GE
#76	Russell L. Yeckley	23	Kennametal
#77	Teddy M. Keller	23	US Air Force
#78	Theodor Burge	23	Sika Ag, Vorm. Kaspar Winkler &
#79	Tsuneaki Ohashi	23	Ngk Insulators
#80	Armin Pfeil	22	Hilti Aktiengesellschaft
#81	Chien-Ping Ju	22	Calcitec
#82	Jay A. Morrison	22	Siemens Energy
#83	Jiin-Huey Chern Lin	22	Calcitec
#84	Qingxia Liu	22	United States Gypsum
#85	Robert Angelo Mercuri	22	Grafttech
#86	Yukio Sakabe	22	Murata Manufacturing Co.
#87	Akihiko Tsuge	21	Kabushiki Kaisha Toshiba
#88	Arthur H. Gerber	21	Borden
#89	Charles D. Greskovich	21	GE
#90	Franz Wombacher	21	Sika Technology Ag
#91	Leslie A. Jardine	21	W.R. Grace & Co.-Conn.
#92	Masakazu Watanabe	21	Ngk Spark Plug Co.
#93	Mitsuo Kinoshita	21	Takemoto Yushi
#94	Robert C. Kantner	21	Lanxide Technology
#95	Tomonori Takahashi	21	Ngk Insulators
#96	Tsutomu Yuasa	21	Nippon Shokubai Co.
#97	Vinod K. Sarin	21	Gte Laboratories Incorporated
#98	Yoshimasa Kobayashi	21	Ngk Insulators
#99	Gary B. Merrill	20	Siemens Energy
#100	Gerhard H. Schiroky	20	Lanxide Technology

Top Companies

Rank ↑	Company ↕	Patents ↕
1	Ngk Insulators	579
2	GE	457
3	Corning Incorporated	369
#4	Halliburton Energy Services	355
#5	Sumitomo Electric Industries	329
#6	RTX (Raytheon)	274
#7	Murata Manufacturing Co.	240
#8	E.I. Du Pont De Nemours And	227
#9	Lanxide Technology	226
#10	Tdk	215
#11	United States Gypsum	200
#12	Unknown	193
#13	3M	187
#14	Ngk Spark Plug Co.	175
#15	US Air Force	163
#16	W.R. Grace & Co.-Conn.	160
#17	Kyocera	154
#18	Hitachi	130
#19	Kabushiki Kaisha Toshiba	129
#20	Honeywell	128
#21	Basf Se	127
#22	Dow Corning	122
#23	Construction Research & Technology Gmbh	119
#24	Sika Technology Ag	103
#25	US Dept of Energy	92
#26	IBM	90
#27	Saint-Gobain Centre De Recherches Et D'Etudes Europeen	89
#28	University of California	89
#29	Wacker Chemie Ag	88
#30	Hoechst Gmbh	86
#31	Rolls-Royce Plc	83
#32	Ibiden Co.	80
#33	Mitsubishi Materials	80
#34	Samsung	73
#35	Bayer Healthcare	72
#36	Shin-Etsu Chemical Co.	72
#37	Ube Industries	72
#38	Saint-Gobain Ceramics & Plastics	69
#39	Dow Global Technologies	66
#40	KFUPM	66
#41	The Boeing	66
#42	Saudi Arabian Oil	65
#43	CEA	61
#44	Gte Laboratories Incorporated	58
#45	Norton	58
#46	Agency Of Industrial Science And Technology	58
#47	Shell Oil Compny	56
#48	CNRS	55
#49	Lafarge	55
#50	Goodrich	53
#51	Taiyo Yuden Co.	53
#52	NASA	53
#53	Schlumberger Technology	52
#54	Eastman Kodak	51
#55	Applied Materials	50
#56	Denki Kagaku Kogyo	50
#57	Nichia	50
#58	Nippon Shokubai Co.	50
#59	Sandvik Ab	49
#60	Ford	49
#61	Asahi Glass Co.	48
#62	Rohm And Haas	48
#63	Denso	47
#64	Kennametal	46
#65	Rolls-Royce High Temperature Composites	46
#66	Toshiba Ceramics Co.	46
#67	Canon	46
#68	Mbt Holding Ag	44
#69	Gte Products	43
#70	Tosoh	43
#71	Kao	42
#72	MIT	42
#73	Nippon Steel	42
#74	Societe Europenne De Propulsion	42
#75	Corning Glass Works	41
#76	US Army	41
#77	Dresser Industries	40
#78	U.S. Philips	40
#79	Degussa Ag	39
#80	Hilti Aktiengesellschaft	39
#81	Korea Institute Of Science And Technology	39
#82	Safran Ceramics	39
#83	ICI	38
#84	Siemens Aktiengesellschaft	38
#85	ExxonMobil	37
#86	Lockheed Martin	37
#87	Carborundum	36
#88	Moltech Invent S.A.	36
#89	Aluminum Company Of America	35
#90	Honda Motor Co.	35
#91	James Hardie Technology Limited	35
#92	Max-Planck-Gesellschaft Zur Föderung Der Wissenschaften E.V.	35
#93	Sumitomo Electric Hardmetal	35
#94	Toyota Central R&D Labs	34
#95	Robert Bosch Gmbh	34
#96	Skyworks Solutions	34
#97	Sumitomo Chemical	34
#98	Council Of Scientific And Industrial Research	33
#99	Refractory Intellectual Property	33
#100	Shinagawa Refractories Co.	33

Ceramics and cement Patent Leaders All Time

Patents per Year

Top Inventors

Top Companies