Fuels and petroleum 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	Omer Refa Koseoglu	226	Saudi Arabian Oil
2	Andrew G. Horodysky	190	ExxonMobil
3	Hartley Owen	150	ExxonMobil
#4	Stephen J. Miller	132	Chevron
#5	Antonio Gutierrez	122	ExxonMobil
#6	Rodney L. Sung	117	Chevron
#7	Mohsen N. Harandi	110	ExxonMobil
#8	Dennis J. O'Rear	108	Chevron
#9	Robert D. Lundberg	103	ExxonMobil
#10	Jacob Emert	97	ExxonMobil
#11	Ki-Hyouk Choi	90	Saudi Arabian Oil
#12	Abdennour Bourane	84	Saudi Arabian Oil
#13	Richard E. Cherpeck	73	Chevron
#14	John Francis Quanci	71	Suncoke Technology And Development
#15	Hye Kyung Cho Timken	69	Chevron
#16	Tom N. Kalnes	69	Uop
#17	Scott Lee Wellington	67	Shell Oil Compny
#18	Benjamin J. Kaufman	65	Chevron
#19	Jacob J. Habeeb	64	ExxonMobil
#20	Roby Bearden, Jr.	63	ExxonMobil
#21	Matthias Krull	62	Clariant
#22	John M. Rosenbaum	61	Chevron
#23	Tsoung Y. Yan	61	ExxonMobil
#24	Stuart S. Shih	60	ExxonMobil
#25	Richard K. Hoehn	59	Uop
#26	Jerry J. Weers	57	Baker Hughes Holdings
#27	Michel Daage	56	ExxonMobil
#28	Paul J. Berlowitz	56	ExxonMobil
#29	Robert J. Wittenbrink	56	ExxonMobil
#30	Simon G. Kukes	56	Phillips Petroleum
#31	Abhimanyu O. Patil	55	ExxonMobil
#32	Michael Siskin	55	ExxonMobil
#33	Masato Kaneko	54	Idemitsu Kosan Co.
#34	Paul H. Schipper	54	ExxonMobil
#35	Ewan E. Delbridge	53	The Lubrizol
#36	Angeline B. Cardis	52	ExxonMobil
#37	Eric Benazzi	52	Institut Francais Du Petrole
#38	Ibrahim Abba	52	Saudi Arabian Oil
#39	Stephen H. Brown	52	ExxonMobil
#40	Patrick E. Mosier	51	The Lubrizol
#41	Margaret M. Wu	50	ExxonMobil
#42	Paul E. Adams	50	The Lubrizol
#43	William R. S. Barton	50	The Lubrizol
#44	John T. Loper	49	Afton Chemical
#45	Theodore E. Nalesnik	49	Chevron
#46	David A. Lomas	48	Uop
#47	Liehpao O. Farng	48	ExxonMobil
#48	Matthew D. Gieselman	48	The Lubrizol
#49	Richard M. Lange	48	The Lubrizol
#50	Thomas F. Degnan	48	ExxonMobil
#51	Ujjal K. Mukherjee	48	Lummus Technology
#52	George J. Antos	46	Uop
#53	Richard H. Schlosberg	46	ExxonMobil
#54	Saleh Elomari	46	Chevron
#55	Aaron Chi Akah	45	Saudi Arabian Oil
#56	Nai Y. Chen	45	ExxonMobil
#57	Ramesh Varadaraj	45	ExxonMobil
#58	Raymond F. Watts	45	ExxonMobil
#59	David J. Moreton	44	The Lubrizol
#60	Peter Kokayeff	44	Uop
#61	Ricardo Bloch	44	ExxonMobil
#62	Sankara Sri Venkata RAMAKUMAR	44	Indian Oil Corporation Limited
#63	Barry A. Freel	43	Ensyn Renewables
#64	Opinder Kishan Bhan	43	Shell Oil Compny
#65	Paul F. Keusenkothen	43	ExxonMobil
#66	Robert Peter Hodgkins	43	Saudi Arabian Oil
#67	Terry L. Marker	42	Uop
#68	Charles A. Drake	41	Phillips Petroleum
#69	Craig D. Tipton	41	The Lubrizol
#70	Richard C. Stell	41	ExxonMobil
#71	Slavik Kasztelan	41	Institut Francais Du Petrole
#72	Stanley J. Frey	41	Uop
#73	Xin X. Zhu	41	Uop
#74	Cyril A. Migdal	40	Chevron
#75	Jack Ryer	40	ExxonMobil
#76	Qi Xu	40	Saudi Arabian Oil
#77	Rafael Espinoza	40	—
#78	William P. Hettinger, Jr.	40	Ashland Oil
#79	Costandi A. Audeh	39	ExxonMobil
#80	Edward S. Ellis	39	ExxonMobil
#81	Glen B. Brons	39	ExxonMobil
#82	Jianhua Yao	39	—
#83	Thomas F. DeRosa	39	Chevron
#84	William R. Ruhe, Jr.	39	Chevron
#85	William D. Abraham	38	The Lubrizol
#86	Alakananda Bhattacharyya	37	Uop
#87	Gordon F. Stuntz	37	ExxonMobil
#88	Musaed Salem Al-Ghrami	37	—
#89	Scott D. Schwab	37	Afton Chemical
#90	Teng Xu	37	ExxonMobil
#91	Timothy L. Hilbert	37	ExxonMobil
#92	Vasant P. Thakkar	37	Uop
#93	Arno Johannes Maria Oprins	36	Sabic Global Technologies B.V.
#94	Chun Wai Choi	36	Suncoke Technology And Development
#95	Eric D. Morrison	36	Ecolab Usa
#96	Hans Peter Rath	36	Basf Se
#97	James N. McCoy	36	ExxonMobil
#98	Jun Long	36	China Petroleum & Chemical
#99	Marc-Andre Poirier	36	ExxonMobil
#100	Sheldon Herbstman	36	Chevron

Top Companies

Rank ↑	Company ↕	Patents ↕
1	ExxonMobil	4,284
2	Chevron	2,220
3	Uop	1,350
#4	Shell Oil Compny	903
#5	The Lubrizol	815
#6	Saudi Arabian Oil	636
#7	Phillips Petroleum	621
#8	Institut Francais Du Petrole	481
#9	Idemitsu Kosan Co.	442
#10	Basf Se	295
#11	Afton Chemical	290
#12	Unknown	231
#13	Ifp Energies Nouvelles	214
#14	Nippon Oil	209
#15	GE	205
#16	Infineum International Limited	193
#17	Union Oil Company Of California	190
#18	Ethyl	172
#19	Amoco	166
#20	E.I. Du Pont De Nemours And	153
#21	Ecolab Usa	140
#22	Baker Hughes Holdings	131
#23	Jx Nippon Oil & Energy	126
#24	Google	126
#25	Atlantic Richfield	123
#26	Sabic Global Technologies B.V.	120
#27	Standard Oil Company (Indiana)	120
#28	Conoco	118
#29	Intevep, S.A.	107
#30	China Petroleum & Chemical	100
#31	Indian Oil Corporation Limited	97
#32	Lummus Technology	97
#33	Dow Global Technologies	96
#34	Betz Laboratories	94
#35	Eni S.P.A.	88
#36	Total Marketing Services	88
#37	Ashland Oil	86
#38	US Air Force	85
#39	Ciba-Geigy	82
#40	US Dept of Energy	82
#41	Kyodo Yushi Co.	80
#42	Suncoke Technology And Development	79
#43	Ethyl Petroleum Additives	78
#44	Nalco Chemical	76
#45	Krupp Koppers Gmbh	70
#46	Mitsubishi Electric	68
#47	Research Institute Of Petroleum Processing, Sinopec	66
#48	Bp Corporation North America	65
#49	Cosmo Oil Co.	65
#50	Petróleo Brasileiro S.A.—Petrobras	64
#51	Kellogg Brown & Root	62
#52	Toyota	62
#53	Firma Carl Still	58
#54	Stone & Webster Engineering	58
#55	Union Carbide	58
#56	Hitachi	57
#57	W.R. Grace & Co.-Conn.	57
#58	Catalytic Distillation Technologies	56
#59	Sk Innovation Co.	56
#60	Kior	53
#61	Haldor Topsøe A/S	52
#62	Metallgesellschaft Ag	52
#63	Air Products And Chemicals	51
#64	Gulf Research & Development	51
#65	Linde Gmbh	50
#66	Eneos	49
#67	KFUPM	48
#68	Marathon Petroleum Company Lp	48
#69	Petrolite	47
#70	Siemens Aktiengesellschaft	47
#71	Ntn	46
#72	The Standard Oil	46
#73	Clariant	45
#74	Agip Petroli S.P.A.	44
#75	Castrol Limited	44
#76	Henkel Limited	44
#77	ICI	44
#78	Sasol Technology Proprietary Limited	44
#79	Bergwerksverband Gmbh	43
#80	Fluor Technologies	43
#81	Kao	43
#82	Sumitomo Metal Industries	43
#83	Battelle Memorial Institute	42
#84	Dow Corning	42
#85	Innospec Limited	42
#86	Shell Usa	42
#87	Didier Engineering Gmbh	41
#88	Elf France	41
#89	Japan Oil, Gas And Metals National	41
#90	Japan Petroleum Exploration Co.	40
#91	Hoechst Gmbh	39
#92	Inpex	39
#93	Honeywell	39
#94	Dr. C. Otto & Comp. Gmbh	38
#95	Instituto Mexicano Del Petróleo	37
#96	Saudi Basic Industries	37
#97	Tonen	37
#98	Kobe Steel	36
#99	Equistar Chemicals, Lp	35
#100	Henkel Kommanditgesellschaft Auf Aktien	35

Fuels and petroleum Patent Leaders All Time

Patents per Year

Top Inventors

Top Companies