Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4975742 | Toner density control device | Junichi Takamatsu | 1990-12-04 |
| 4873549 | Device for detecting the life of an image forming process unit, opening of a seal of the unit and attachment of the unit to an image forming apparatus | Junichi Hirobe, Junichi Takamatsu, Kazuto Hori, Yukihiro Aikawa | 1989-10-10 |