Patent Leaderboard
USPTO Patent Rankings Data through Sept 30, 2025
KI

Keiichi Ito — 68 Patents

YAYazaki: 15 patents #264 of 3,427Top 8%
Mitsubishi Electric: 9 patents #3,275 of 25,717Top 15%
RIRinnai: 7 patents #12 of 173Top 7%
Sumitomo Electric Industries: 6 patents #4,612 of 21,551Top 25%
Sony: 5 patents #7,785 of 25,231Top 35%
Honda Motor Co.: 5 patents #4,418 of 21,052Top 25%
FIFujifilm Business Innovation: 4 patents #1,993 of 5,238Top 40%
Toyota: 4 patents #6,703 of 26,838Top 25%
TATaikisha: 3 patents #15 of 96Top 20%
EIEvolvable Systems Research Institute: 3 patents #3 of 10Top 30%
ATAutonetworks Technologies: 2 patents #557 of 1,079Top 55%
SSSumitomo Wiring Systems: 2 patents #1,192 of 2,615Top 50%
VCV Technology Co.: 1 patents #23 of 67Top 35%
FCFuji Electric Co.: 1 patents #1,354 of 2,643Top 55%
NCNhk Spring Co.: 1 patents #555 of 1,116Top 50%
PSPrime Planet Energy & Solutions: 1 patents #94 of 228Top 45%
TSTakai Rika Denki Seisakusho: 1 patents #34 of 190Top 20%
TCTetra Co.: 1 patents #9 of 38Top 25%
TTThe University Of Tokyo: 1 patents #1,000 of 2,633Top 40%
Overall (All Time): #30,758 of 4,157,543Top 1%
68 Patents All Time

Issued Patents All Time

Showing 51–68 of 68 patents

Patent #TitleCo-InventorsDate
6447346 Multipolar connector apparatus with force transmitting member Harehide Sasaki, Kazuyuki Shiraki, Masanori Wakui 2002-09-10
6428345 Connector and connecting structure of connector and circuit body Masahiro Sawayanagi, Kentaro Nagai, Kazuyuki Shiraki, Isao Yoneyama 2002-08-06
6351202 Stationary induction apparatus Kosei Tsuji, Taketoshi Hasegawa, Noboru Hosokawa, Kiyoyuki Ishikawa, Yasuo Toba +1 more 2002-02-26
6067588 Channel interface signal tracing input/output controller apparatus 2000-05-23
5959694 Video signal with contour adjustment processing apparatus Hitoshi Nakamura 1999-09-28
5905532 Video signal with contour adjustment processing apparatus Hitoshi Nakamura 1999-05-18
5626656 Stock solution of release agent for green sand mold forming Kazumitsu Kondo 1997-05-06
5598624 Method of connecting an electric connector with false connection preventing mechanism Hirotaka Noda, Masao Shibata, Kenichi Yamauchi, Masaru Fukuda, Motoyoshi Suzuki +1 more 1997-02-04
5527186 Electric connector with false connection preventing mechanism and method of connecting thereof Hirotaka Noda, Masao Shibata, Kenichi Yamauchi, Masaru Fukuda, Motoyoshi Suzuki +1 more 1996-06-18
5453018 Low inserting and extracting force connector Hirotaka Noda, Nobutoshi Hagiwara, Naoto Taguchi, Yuji Hatagishi, Toshifumi Matsuura 1995-09-26
5438942 Turning zigzag embroidery machine Akira Okuno, Takashi Isobe 1995-08-08
5330362 Low-operating-force connector Hirotaka Noda, Nobutoshi Hagiwara, Naoto Taguchi, Yuji Hatagishi, Toshifumi Matsuura 1994-07-19
5224872 Switch connector assembly with waterproof structure Hirotaka Noda, Nobutoshi Hagiwara, Tetsuaki Suzuki, Yasuhiro Onodera, Shinji Kodama 1993-07-06
5223459 Working system for aeroplane Shiro Odawara, Kazushi Kobayashi 1993-06-29
5160040 Cleaning system for use in treatment of excess paint Shiro Odawara, Kazushi Kobayashi 1992-11-03
5136857 Air conditioning system for use in aeroplane hangar Shiro Odawara, Kazushi Kobayashi 1992-08-11
4421192 Apparatus for running a vehicle at a constant speed Nobuyuki Yamaguchi, Kazuhiko Hayashi, Ken Asami, Kazuo Sato, Takeshi Ochiai 1983-12-20
4219109 Oil pressure control means for an automatic transmission Fumihiro Ushijima, Kagenori Fukumura 1980-08-26