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 26–50 of 68 patents

Patent #TitleCo-InventorsDate
6969276 Metal terminal with weakened part Shuji Ono, Hiroaki Arai, Hiroki Goto, Masahiro Takamatsu, Koji Nomura +4 more 2005-11-29
6967692 Apparatus for processing luminance signal Yuki Kakuya, Atsuhisa Kageyama, Nobutaka Okada 2005-11-22
6965417 Signal processor Hidetoshi Suzuki, Katsuya Ishikawa, Hisao Kunitani 2005-11-15
6959144 Air heater with expansion containing electric heater arranged in stages Yukihiko Shimonoma, Yoshinori Fujisawa, Yoshimune Yamada 2005-10-25
6923678 Device for temporarily fastening electronic component to circuit board Yoshiaki Kato, Tetsuya Hattori, Masato Minakata, Atsushi Nishida 2005-08-02
6918783 Connector capable of preventing incomplete fitting Tomomi Endo, Atsushi Nishida, Yoshitaka Kashima, Masato Minakata 2005-07-19
6907192 Hybrid hotair heater Toshiyuki Nomura, Yoshinori Fujisawa, Yukihiko Shimonoma, Yoshimune Yamada 2005-06-14
6882796 Hybrid hot air heater Yoshinori Fujisawa, Yukihiko Shimonoma, Yoshimune Yamada 2005-04-19
6840781 Structure for mounting connector on board Harehide Sasaki, Yoshiaki Kato, Masato Minakata, Atsushi Nishida 2005-01-11
6840814 Connector for printed circuit board Masaru Fukuda, Toshikaki Okabe, Tetsuya Yamashita, Masanori Wakui, Isao Yoneyama 2005-01-11
6830490 Battery terminal and battery post adaptor Takao Murakami, Masaru Fukuda, Kazuyuki Shiraki, Masanori Wakui 2004-12-14
6824430 Fusible link unit Norio Matsumura, Goro Nakamura, Yoshihiko Nakahama, Kazuhiro Kusuyama 2004-11-30
6795643 Hybrid hotair heater Yoshinori Fujisawa, Yukihiko Shimonoma, Yoshimune Yamada 2004-09-21
6773283 Switchable connector device Kazuharu Yoshimatsu, Yoshiaki Kato, Kazuyuki Shiraki, Masanori Wakui 2004-08-10
6753908 Linear matrix circuit Hitoshi Nakamura 2004-06-22
6659792 Electric connection box Yuuji Saka, Eriko Yuasa, Takamichi Miyamukai, Hiroyuki Hayashi, Isao Yoneyama +3 more 2003-12-09
6636229 Gradation correction circuit, and &ggr; correction apparatus Katsuya Ishikawa, Atsuhisa Kageyama 2003-10-21
6633343 Dynamic gamma correction apparatus Atsuhisa Kageyama, Nobutaka Okada, Katsuya Ishikawa, Hidetoshi Suzuki, Hisao Kunitani +1 more 2003-10-14
6631065 Overcurrent interrupting device Kazuto Sugiyama, Kazuyuki Shiraki, Isao Yoneyama 2003-10-07
6614475 Correction apparatus and method for imaging signals and video camera Satoshi Yamaga, Seiji Sato 2003-09-02
6529108 Electric appliance Kiyoyuki Ishikawa, Yasuji Yoshizumi 2003-03-04
6488515 Connector apparatus Harehide Sasaki, Kazuyuki Shiraki, Masanori Wakui 2002-12-03
6476874 Apparatus and method for combining background images with main images Taku Kihara, Hitoshi Nakamura 2002-11-05
6464538 Shield connector and terminal connecting device for shielding electric wire Sho Miyazaki, Hidehiko Iwakawa, Masanori Wakui, Kazuyuki Shiraki 2002-10-15
6457980 Printed circuit board connector Tetsuya Hattori, Yoshiaki Kato, Kazuyuki Shiraki, Masanori Wakui 2002-10-01