Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7583916 | Image forming apparatus | Hiroaki Ogata, Seiji Yamaguchi, Shinji Uehara | 2009-09-01 |
| 7346298 | Developing device, process cartridge, and electrophotographic image-forming apparatus | Seiji Yamaguchi, Tachio Kawai, Issei Imamura | 2008-03-18 |
| 7257353 | Developing apparatus | Tachio Kawai, Seiji Yamaguchi | 2007-08-14 |
| 7158740 | Image forming apparatus | Seiichi Shinohara, Hiroshi Sato | 2007-01-02 |
| 7155137 | Process cartridge, developing cartridge and developing roller | Kojiro Yasui, Hironobu Isobe, Hiroshi Sato, Seiichi Shinohara, Yasufumi Yoshino | 2006-12-26 |
| 7068966 | Image forming apparatus operable in two image formation modes using either one developing device or a plurality of developing devices | Seiichi Shinohara, Hiroshi Sato | 2006-06-27 |
| 6978100 | Process cartridge, developing cartridge and developing roller | Kojiro Yasui, Hironobu Isobe, Hiroshi Sato, Seiichi Shinohara, Yasufumi Yoshino | 2005-12-20 |