Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4888521 | Photoconductive device and method of operating the same | Kenkichi Tanioka, Keiichi Shidara, Tatsuro Kawamura, Junichi Yamazaki, Eikyuu Hiruma +16 more | 1989-12-19 |
| 4883562 | Method of making a photosensor | Hirofumi Ogawa, Tadaaki Hirai, Takaaki Unnai, Masanao Yamamoto, Keiichi Shidara +3 more | 1989-11-28 |