Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4835566 | Electrophotographic copying apparatus | Tateki Oka, Naoki Toyoshi | 1989-05-30 |
| 4828953 | Method for the formation of outline images corresponding to the peripheral outlines of document's images | Tateki Oka, Naoki Toyoshi | 1989-05-09 |
| 4821071 | Electrophotographic copiers | Tateki Oka, Naoki Toyoshi, Hisashi Myochin | 1989-04-11 |