Issued Patents All Time
Showing 26–28 of 28 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5247211 | Light-receiving circuit | — | 1993-09-21 |
| 5138148 | Fiber optic receiving circuit having improved gain over a wide frequency band | — | 1992-08-11 |
| 4695858 | Duplex optical communication module unit | Hatsuo Takezawa, Kenichi Donuma, Shuhei Katagiri | 1987-09-22 |