Grinding and polishing 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	Steven M. Zuniga	156	Applied Materials
2	Hung Chih Chen	133	Wistron
3	Tetsuji Togawa	128	Ebara
#4	Boguslaw A. Swedek	116	Applied Materials
#5	Manoocher Birang	112	Applied Materials
#6	Scott E. Moore	104	Micron
#7	Rajeev Bajaj	86	Applied Materials
#8	Norio Kimura	73	Ebara
#9	Osamu Nabeya	68	Ebara
#10	Scott Meikle	67	Micron
#11	Jeonghoon Oh	61	Applied Materials
#12	Makoto Fukushima	61	Ebara
#13	Fred C. Redeker	59	Applied Materials
#14	Hozumi Yasuda	58	Ebara
#15	Trung T. Doan	58	Micron
#16	Karl M. Robinson	57	Micron
#17	Shou-Sung Chang	57	Applied Materials
#18	Thomas H. Osterheld	56	Applied Materials
#19	Dominic J. Benvegnu	54	Applied Materials
#20	David B. James	53	Rodel Holdings
#21	Jeffrey Drue David	53	Applied Materials
#22	Chien-Min Sung	48	Ritedia
#23	Harry Q. Lee	47	Applied Materials
#24	Scott R. Culler	46	3M
#25	Andrew J. Nagengast	45	Applied Materials
#26	Homayoun Talieh	44	Nutool
#27	Bowen Xue	43	Citic Dicastal Co.
#28	Hisanori Matsuo	42	Ebara
#29	Jiandong Guo	42	Citic Dicastal Co.
#30	Daniel Redfield	41	Applied Materials
#31	Dinesh Chopra	41	Micron
#32	Hiroyuki Shinozaki	41	Ebara
#33	Ryoji Shibata	41	Nidek Co.
#34	Srinivasan Ramanath	41	Saint-Gobain Abrasives
#35	Erwin Junker	40	Erwin Junker Maschinenfabrik Gmbh
#36	John M. Boyd	40	Lam Research
#37	Gurtej S. Sandhu	39	Micron
#38	Hirokuni Hiyama	37	Ebara
#39	Michael A. Walker	37	Micron
#40	Bainian Qian	36	Rohm And Haas Electronic Materials Cmp Holdings
#41	Lee Melbourne Cook	36	Rodel Holdings
#42	Wayne O. Duescher	36	Keltech Engineering
#43	Yehiel Gotkis	36	Lam Research
#44	Yutaka Wada	36	Ebara
#45	Charles C. Garretson	35	Applied Materials
#46	Daniel T. Dovel	35	Darex
#47	Kei-Wei Chen	35	TSMC
#48	Kunihiko Sakurai	35	Ebara
#49	Mohamed A. Hashish	35	Flow International
#50	William Easter	33	AT&T
#51	Daniel D. Friel, Sr.	32	Edgecraft
#52	David P. Miess	32	Us Synthetic
#53	Joachim Schadow	32	Robert Bosch Gmbh
#54	Leping Li	32	IBM
#55	Michael A. Vail	32	Us Synthetic
#56	Robert D. Tolles	32	Applied Materials
#57	Ronald C. Wiand	32	Inland Diamond Products
#58	Benjamin Cherian	31	Applied Materials
#59	Doyle E. Bennett	31	Applied Materials
#60	Gundu M. Sabde	31	Micron
#61	Jay Gurusamy	31	Applied Materials
#62	Kazuto Hirokawa	31	Ebara
#63	Kenneth E. Bertagnolli	31	Us Synthetic
#64	Masaya Seki	31	Ebara
#65	Toshiaki Mizuno	31	Nidek Co.
#66	Yoichi Kobayashi	31	Ebara
#67	Aaron K. Nienaber	30	3M
#68	Gregory P. Muldowney	30	Rohm And Haas Electronic Materials Cmp Holdings
#69	Jason Garcheung Fung	30	Applied Materials
#70	Sen-Hou Ko	30	Applied Materials
#71	Stan Tsai	30	Applied Materials
#72	Edward J. Woo	29	3M
#73	Gwo S. Swei	29	Norton
#74	John A. Maze	29	AT&T
#75	Masayuki Nakanishi	29	Ebara
#76	Paul D. Butterfield	29	Applied Materials
#77	Anthony C. Gaeta	28	Saint-Gobain Abrasives
#78	Gunter Schneider	28	Schneider Gmbh & Co. Kg
#79	Hiroyuki Yano	28	Kabushiki Kaisha Toshiba
#80	Keiji Mase	28	Fuji Manufacturing Co.
#81	Keisuke Namiki	28	Ebara
#82	Toru Maruyama	28	Ebara
#83	Brian J. Brown	27	Applied Materials
#84	Charles J. Molnar	27	Beaver Creek Concepts
#85	Diane Scott	27	Nexplanar
#86	George C. Jacob	27	Rohm And Haas Electronic Materials Cmp Holdings
#87	Jang Won SEO	27	Samsung
#88	John V. H. Roberts	27	Rodel Holdings
#89	Seiji Katsuoka	27	Ebara
#90	William C. Allison	27	Nexplanar
#91	Chung-Chih Feng	26	San Fang Chemical Industry Co.
#92	Frank Miceli	26	AT&T
#93	I-Peng Yao	26	San Fang Chemical Industry Co.
#94	Jianshe Tang	26	Applied Materials
#95	Jimin Zhang	26	Applied Materials
#96	John M. White	26	Applied Materials
#97	Nobuyuki Takada	26	Ebara
#98	Rachana Upadhyay	26	Saint-Gobain Abrasifs
#99	Shijian Li	26	Applied Materials
#100	Bulent M. Basol	25	Solopower

Top Companies

Rank ↑	Company ↕	Patents ↕
1	Applied Materials	939
2	3M	681
3	Ebara	640
#4	Micron	557
#5	TSMC	312
#6	Saint-Gobain Abrasives	276
#7	Robert Bosch Gmbh	218
#8	Lam Research	216
#9	Saint-Gobain Abrasifs	209
#10	IBM	204
#11	Unknown	193
#12	Rohm And Haas Electronic Materials Cmp Holdings	176
#13	Samsung	175
#14	Disco	160
#15	Norton	134
#16	Shin-Etsu Handotai Co.	134
#17	Black & Decker	120
#18	GE	120
#19	Kabushiki Kaisha Toshiba	117
#20	Us Synthetic	112
#21	Nidek Co.	110
#22	RTX (Raytheon)	105
#23	Speedfam-Ipec	102
#24	Toyoda Koki Kabushiki Kaisha	90
#25	Essilor International (Compagnie Generale D'Optique)	89
#26	Fujitsu Limited	82
#27	Sintokogio	82
#28	Makita	78
#29	Tokyo Seimitsu Co.	78
#30	AMD	77
#31	The Boeing	76
#32	Rodel Holdings	74
#33	Hoya	73
#34	Speedfam Co.	71
#35	Lsi	68
#36	Strasbaugh	66
#37	Citic Dicastal Co.	65
#38	United Microelectronics	63
#39	Jtekt	62
#40	Cabot Microelectronics	60
#41	Hitachi	58
#42	Nec	58
#43	Texas Instruments	57
#44	Baker Hughes Holdings	56
#45	Intel	56
#46	Sony	56
#47	Corning Incorporated	54
#48	Fujikoshi Machinery	54
#49	Sumitomo Electric Industries	53
#50	AT&T	50
#51	Smith International	49
#52	Foxconn	48
#53	Seagate Technology	48
#54	Church & Dwight Co.	47
#55	Motorola	46
#56	Mitsubishi Electric	44
#57	Sumco	43
#58	Toyo Tire & Rubber Co.	43
#59	Satisloh Ag	42
#60	Edgecraft	40
#61	Essilor International	40
#62	Canon	40
#63	Flow International	39
#64	Infineon Technologies Ag	39
#65	Iv Technologies Co.	39
#66	Darex	37
#67	Dow Global Technologies	36
#68	Hilti Aktiengesellschaft	36
#69	HGST	36
#70	Noritake Co., Limited	36
#71	Novellus Systems	36
#72	Diamond Innovations	35
#73	Shin-Etsu Chemical Co.	35
#74	Siltronic Ag	35
#75	C. & E. Fein Gmbh	34
#76	Memc Electronic Materials	34
#77	Nihon Micro Coating Co.	33
#78	Nikon	33
#79	Siemens Aktiengesellschaft	33
#80	Toyota	33
#81	Honda Motor Co.	32
#82	Sunnen Products	32
#83	Nexplanar	31
#84	Nsk	31
#85	Omax	31
#86	Wernicke	31
#87	Apple	30
#88	Chartered Semiconductor Manufacturing	30
#89	Coburn Optical Industries	30
#90	Erwin Junker Maschinenfabrik Gmbh	30
#91	Fuji Manufacturing Co.	30
#92	Mitsubishi Materials	30
#93	Jsr	28
#94	Ford	28
#95	Rca	27
#96	Topcon	27
#97	Unova Uk Limited	27
#98	Dynabrade	26
#99	Excello Co.	25
#100	Jason Incorporated	25

Grinding and polishing Patent Leaders All Time

Patents per Year

Top Inventors

Top Companies