Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4888521 | Photoconductive device and method of operating the same | Kenkichi Tanioka, Keiichi Shidara, Tatsuro Kawamura, Eikyuu Hiruma, Kazuhisa Taketoshi +16 more | 1989-12-19 |
| 4883562 | Method of making a photosensor | Hirofumi Ogawa, Kenji Sameshima, Tadaaki Hirai, Takaaki Unnai, Masanao Yamamoto +3 more | 1989-11-28 |
| 4884011 | Light-detecting device | Tatsuo Makishima, Tadaaki Hirai, Kazutaka Tsuji, Sachio Ishioka, Takashi Yamashita +2 more | 1989-11-28 |