Patent Leaderboard
USPTO Patent Rankings Data through Sept 30, 2025
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Yuichi Nakamura — 97 Patents

IBM: 18 patents #6,125 of 70,183Top 9%
Kabushiki Kaisha Toshiba: 10 patents #3,082 of 21,451Top 15%
Nec: 10 patents #1,345 of 14,502Top 10%
Sumitomo Electric Industries: 10 patents #2,734 of 21,551Top 15%
SESeiko Epson: 10 patents #1,850 of 7,774Top 25%
ICIbiden Co.: 7 patents #122 of 730Top 20%
Hitachi: 6 patents #1 of 127Top 1%
SASumitomo Electric Sintered Alloy: 5 patents #12 of 73Top 20%
TSToshiba Energy Systems & Solutions: 4 patents #70 of 569Top 15%
RIRailway Technical Research Institute: 3 patents #14 of 233Top 7%
Honda Motor Co.: 3 patents #6,619 of 21,052Top 35%
AEAida Engineering: 3 patents #33 of 163Top 25%
SCShinko Electric Industries Co.: 3 patents #234 of 723Top 35%
TCToyo Tire & Rubber Co.: 3 patents #110 of 499Top 25%
TSToshiba Plant Systems & Services: 2 patents #3 of 50Top 6%
ICIshida Co.: 2 patents #120 of 307Top 40%
SSSumitomo Wiring Systems: 2 patents #1,192 of 2,615Top 50%
JDJapan Display: 2 patents #741 of 1,204Top 65%
SCSumitomo Electric Printed Circuits: 2 patents #48 of 116Top 45%
FUFujikura: 2 patents #518 of 1,407Top 40%
Fujitsu Limited: 1 patents #14,843 of 24,456Top 65%
SISumitomo Metal Industries: 1 patents #630 of 1,462Top 45%
TTToshiba Samsung Storage Technology: 1 patents #6 of 30Top 20%
ACAsahi Glass Co.: 1 patents #1,233 of 2,251Top 55%
YJYahoo Japan: 1 patents #90 of 217Top 45%
KLKabushiki Kaisha Honda Lock: 1 patents #64 of 171Top 40%
KUKeio University: 1 patents #190 of 781Top 25%
IJIshikawajima-Harima Jukogyo: 1 patents #170 of 494Top 35%
KOKomori: 1 patents #120 of 219Top 55%
KCKyushu Electric Power Co.: 1 patents #56 of 151Top 40%
ATAutonetworks Technologies: 1 patents #723 of 1,079Top 70%
Sony: 1 patents #17,262 of 25,231Top 70%
SCShowa Electric Wire & Cable Co.: 1 patents #42 of 169Top 25%
Overall (All Time): #15,281 of 4,157,543Top 1%
97 Patents All Time

Issued Patents All Time

Showing 76–97 of 97 patents

Patent #TitleCo-InventorsDate
6381565 Functional logic circuit verification device 2002-04-30
6332481 Method of filling an ink cartridge with ink and an apparatus thereof Satoshi Shinada, Hisashi Koike, Yukiharu Suda 2001-12-25
6289325 Computer system, message monitoring method and associated message transmission method Gaku Yamamoto, Yoshiaki Mima 2001-09-11
6250746 Method of manufacturing an ink cartridge for use in ink-jet recorder Kazunori Ito, Seiichi Takada, Masahide Matsuyama, Masakazu Sato, Tadatoshi Honzawa +9 more 2001-06-26
6240549 Method and system for analyzing and displaying program information Seiji Hamada, Masahiro Ohkawa, Michio Kikuchi 2001-05-29
6182278 Program development support system and support method and storage medium for storing program components which are used for program development support Seiji Hamada, Kazuya Tago 2001-01-30
5875615 Method of manufacturing an ink cartridge for use in ink jet recorder Kazunori Ito, Seiichi Takada, Masahide Matsuyama, Masakazu Sato, Tadatoshi Honzawa +9 more 1999-03-02
5781519 Optical head apparatus for reading different types of recording mediums So Ishika 1998-07-14
5764527 Optimizing method for logic circuit and logic circuit optimizing system 1998-06-09
5736836 Battery discharge gas control system Osamu Hasegawa, Tatsurou Horie, Yasuyuki Sando, Toshihiro Sone, Kazuhiko Yagi +1 more 1998-04-07
5650807 Ink jet recording apparatus and method of manufacture Nobumasa Abe, Kiyoharu Momose, Ko Watanabe, Tsuneo Handa, Mitsutaka Nishikawa 1997-07-22
5407907 Method of preparing metal oxide crystal Yasuji Yamada, Teruo Izumi, Kanshi Ohtsu, Kengo Ishige, Yuh Shiohara +2 more 1995-04-18
5367324 Ink jet recording apparatus for ejecting droplets of ink through promotion of capillary action Nobumasa Abe, Kiyoharu Momose, Ko Watanabe, Tsuneo Handa, Mitsutaka Nishikawa 1994-11-22
5301175 Optical head apparatus for maintaining a constant angle between an optical axis of an object lens and the surface of a storage medium 1994-04-05
5258976 Method of assembling reproduction-only discs for a reproduction/recording apparatus Makoto Harigae 1993-11-02
5220553 Optical head Hideo Ando 1993-06-15
5148185 Ink jet recording apparatus for ejecting droplets of ink through promotion of capillary action Nobumasa Abe, Kiyoharu Momose, Koji Watanabe, Tsuneo Handa, Mitsutaka Nishikawa 1992-09-15
5073879 Information processing apparatus using a beam splitting means having non-polarization beam split surface Hideo Ando 1991-12-17
4914562 Thermal jet recording apparatus Nobumasa Abe, Kiyoharu Momose, Koji Watanabe, Tsuneo Handa, Mitsutaka Nishikawa 1990-04-03
4794781 Deformation resistant frame for a press Masakatsu Shiga 1989-01-03
4697466 Drive device for press Masayoshi Sugawara, Akira Matsui 1987-10-06
4674357 Balancing device for press Masayoshi Sugawara, Akira Matsui 1987-06-23