Issued Patents 1997
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5689358 | Optical functional devices and integrated optical devices having a ridged multi-quantum well structure | Masashi Nakao, Osamu Mitomi, Kazuo Kasaya, Junichi Nakano, Kiyoyuki Yokoyama | 1997-11-18 |
| 5668214 | Polyarylene sulfide resin composition | — | 1997-09-16 |
| 5608565 | Bidirectional optical transmission system | Kiyomi Kumozaki, Ryuichi Watanabe | 1997-03-04 |