Issued Patents All Time
Showing 26–26 of 26 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4924267 | Process cartridge and multi-color image forming apparatus using same | Masao Yoshikawa, Takashi Saito, Tatuya Kobayashi, Otoya Kosugiyama, Atsushi Kubota +4 more | 1990-05-08 |