Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4868602 | Imaging device | Kenji Sakakibara, Tokunori Katoh, Yukichi Sawaki | 1989-09-19 |
| 4810614 | Method of recording information on photosensitive and pressure-sensitive sheet utilizing mask original form | Kazuo Sangyoji, Takemi Yamamoto, Tsugio Okamoto, Naoyuki Hatta, Yuji Asano +4 more | 1989-03-07 |
| 4798485 | Electronic typewriter with a detector switch | Hiroshi Onoda, Kenji Sakakibara | 1989-01-17 |