Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4888620 | Process cartridge and image forming apparatus using the same | Takamasa Sawada, Hiroo Kobayashi, Osamu Ohuchi, Tadashi Yagi, Yasuyoshi Hayakawa | 1989-12-19 |
| 4873548 | Image forming apparatus comprising a main assembly having a top frame adapted to swing open and closed with respect to a bottom frame and having process cartridge detachably mounted in the main assembly | Hiroo Kobayashi, Tadashi Yagi, Nobukazu Adachi, Yasuyoshi Hayakawa, Takeshi Setoriyama | 1989-10-10 |