Issued Patents All Time
Showing 1–11 of 11 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6512896 | Image forming apparatus with detachable mounting process cartridge | Masato Asanuma, Kouichi Takenouchi, Hiroo Naoi, Syouichi Fujita, Hirofumi Sakita | 2003-01-28 |
| 6324351 | Image-forming apparatus unit and image-forming apparatus | Atsushi Kurimoto, Syouichi Fujita, Hirofumi Sakita | 2001-11-27 |
| 6311027 | Image-forming apparatus which forms images by using a developer | Hirofumi Sakita, Syouichi Fujita, Mitsuru Tokuyama, Masatsugu Nakamura, Hiroo Naoi +1 more | 2001-10-30 |
| 6226490 | Toner replenishing apparatus and image forming apparatus equipped with same | Syouichi Fujita, Itaru Kawabata, Hirofumi Sakita, Masato Asanuma, Kouichi Takenouchi +2 more | 2001-05-01 |
| 6167227 | Developing unit and image forming apparatus | Syouichi Fujita, Itaru Kawabata, Toshio Nishino, Hirofumi Sakita, Mitsuru Tokuyama | 2000-12-26 |
| 5978632 | Toner cartridge | Takahiko Kimura, Yoshiaki Sanada, Jun Yamaguchi, Eiji Sato, Yasuyuki Ishiguro | 1999-11-02 |
| 5923920 | Image forming apparatus for controlling processing conditions in image forming process by detection of tiner patch density formed on photoreceptor surface | Toshihisa Ishida, Masayasu Narimatsu, Tomoko Nishino, Katsuaki Sumida, Jitsuo Masuda +1 more | 1999-07-13 |
| 5923922 | Image forming apparatus with flying toner detecting device | Toshihisa Ishida, Katuaki Sumida, Kanshiro Okamoto, Jitsuo Masuda, Masato Asanuma +3 more | 1999-07-13 |
| 5839018 | Toner density control for an image forming apparatus | Masato Asanuma, Toshiaki Ino, Kanshiro Okamoto, Toshihisa Ishida, Katsuaki Sumida +8 more | 1998-11-17 |
| 5826136 | Image stabilizing method for use in an image forming apparatus | Motoyuki Itoyama, Jitsuo Masuda, Toshihisa Ishida, Katsuhiro Nagayama, Hiroo Naoi +2 more | 1998-10-20 |
| 5734948 | Image stabilizer | Katsuhiro Nagayama, Jitsuo Masuda, Toshiaki Ino, Toshihisa Ishida, Katsuaki Sumida | 1998-03-31 |