Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6118951 | Image forming apparatus and toner replenishing device therefor | Shunji Kato, Masasumi Yahata, Noboru Kusunose | 2000-09-12 |
| 5950062 | Toner sorting device for separating reusable toner from used toner and image forming apparatus using the same device | Masasumi Yahata, Shunji Katoh, Satoshi Takano, Shin-ichi Kawahara, Fumihito Itoh +1 more | 1999-09-07 |
| 5909609 | Image forming apparatus with provisions for supplying toner therein | Masasumi Yahata, Shunji Kato, Satoshi Takano, Nobuo Kikuchi, Shinichi Kawahara +1 more | 1999-06-01 |