TO

Tatsuhiko Oikawa

Ricoh Company: 13 patents #1,714 of 9,818Top 20%
📍 Kitakami, JP: #2 of 52 inventorsTop 4%
Overall (All Time): #384,948 of 4,157,543Top 10%
13
Patents All Time

Issued Patents All Time

Showing 1–13 of 13 patents

Patent #TitleCo-InventorsDate
8538310 Image transfer apparatus, image fixing apparatus, and registration apparatus which prevent a load torque variation upon entry or exit of a sheet into a nipping portion Hiromichi Matsuda, Toshiyuki Andoh, Takashi Hashimoto, Takashi Hodoshima, Hidetaka Noguchi +2 more 2013-09-17
8422037 Image forming apparatus Takashi Hodoshima, Toshiyuki Andoh, Takashi Hashimoto, Hidetaka Noguchi, Seiji Hoshino +1 more 2013-04-16
8364071 Image forming apparatus and sheet conveying device having upstream and downstream rollers Hidetaka Noguchi, Toshiyuki Andoh, Seiji Hoshino, Takashi Hodoshima, Hiromichi Matsuda +2 more 2013-01-29
8254811 Image forming apparatus for controlling movement of a moving member Toshiyuki Andoh, Takashi Hashimoto, Takashi Hodoshima, Hidetaka Noguchi, Seiji Hoshino +1 more 2012-08-28
8165498 Image forming device Seiji Hoshino, Toshiyuki Andoh, Takashi Hodoshima, Takashi Hashimoto, Hidetaka Noguchi 2012-04-24
8131173 Driving apparatus and image forming apparatus Hidetaka Noguchi, Toshiyuki Andoh, Takashi Hodoshima, Seiji Hoshino, Takashi Hashimoto 2012-03-06
8126387 Sheet conveying device and image forming apparatus Hidetaka Noguchi, Toshiyuki Andoh, Takashi Hodoshima, Seiji Hoshino, Hiromichi Matsuda +2 more 2012-02-28
8087670 Sheet conveying device and image forming apparatus Hidetaka Noguchi, Toshiyuki Andoh, Takashi Hodoshima, Seiji Hoshino, Takashi Hashimoto 2012-01-03
7971878 Sheet conveying device and image forming apparatus Takashi Hashimoto, Toshiyuki Andoh, Takashi Hodoshima, Seiji Hoshino, Hidetaka Noguchi 2011-07-05
7945176 Image forming apparatus including a gap forming unit Seiji Hoshino, Takashi Hashimoto, Toshiyuki Andoh 2011-05-17
6923520 Head driving unit and an image forming apparatus using the same Toshihito Kamei, Takashi Kimura, Sumiaki Aoki, Mikio Ohashi 2005-08-02
6147766 Printing apparatus for increasing efficiency in transmitting image data between internal control units Yoshiaki Hanyu, Tetsuro Hirota 2000-11-14
5029840 Automatic sheet feeder for an image recording apparatus Hiroyoshi Haga 1991-07-09