Issued Patents All Time
Showing 26–38 of 38 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D354980 | Image drum cartridge | Yukio Ota, Yoshiharu Momiyama | 1995-01-31 |
| 5307134 | Electrophotographic apparatus | Koji Morimoto | 1994-04-26 |
| 5289249 | Electrophotographic printer having a gravity driven toner recycling unit | Mikio Yamamoto, Minoru Isobe, Yoshiharu Momiyama, Hisao Ono | 1994-02-22 |
| 5280324 | Toner cartridge | Hisao Ono, Yukio Ota, Hiroshi Kikuchi, Yoshiharu Momiyama | 1994-01-18 |
| 5264900 | Developing device including toner hopper and toner cartridge stirring portions | Yoshiharu Momiyama, Yukio Ota | 1993-11-23 |
| 5235389 | Replaceable toner cartridge with internal stirring member, and electrophotographic printer employing the same | Hiroshi Kikuchi, Yukio Ota, Yoshitomo Koga, Kazuki Obara, Yoshiharu Momiyama +2 more | 1993-08-10 |
| 5216462 | Toner residual amount detecting mechanism | Masato Takano, Yoshiharu Momiyama, Hiroshi Kikuchi, Yukio Ota | 1993-06-01 |
| D332962 | Image drum cartridge | Hiroshi Kikuchi, Hisao Ono, Yoshiharu Momiyama | 1993-02-02 |
| 5184177 | Electrophotographic printing apparatus | Hiroshi Kikuchi, Hisao Ono, Yoshiharu Momiyama | 1993-02-02 |
| 5132734 | Developing apparatus | Yoshiharu Momiyama, Hiroshi Kikuchi, Yoshitomo Koga, Yukio Ota | 1992-07-21 |
| D321716 | Toner cartridge | Hiroshi Kikuchi, Hisao Ono, Yoshiharu Momiyama | 1991-11-19 |
| 5030373 | Surface-treating agents for copper and copper alloy | Toshiya Kimura, Koichi Wakashima, Hidebumi Ohnuki, Katsutoshi Itani, Akira Hirai | 1991-07-09 |
| 4905028 | Electrophotographic printer | Takehiko Okubo | 1990-02-27 |