Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4890139 | Image forming apparatus | — | 1989-12-26 |
| 4847658 | Image forming apparatus and image forming method employed therefor | Naoki Toyoshi, Hiroshi Okamoto, Kenji Tabuchi, Mineyuki Sako | 1989-07-11 |
| 4845524 | Image forming method | Hiroshi Okamoto, Naoki Toyoshi, Kenji Tabuchi, Taisuke Nagao | 1989-07-04 |