Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4695858 | Duplex optical communication module unit | Hatsuo Takezawa, Kenichi Donuma, Shigeyuki Sakura | 1987-09-22 |
| 4647148 | Fiber optic receiver module | — | 1987-03-03 |
| 4410469 | Method for manufacturing a module for a fiber optic link | Kenichi Donuma, Makoto Ohashi | 1983-10-18 |