Issued Patents 1997
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5677781 | Method and device for measuring a noise figure in optical amplifiers | Tohru Mori | 1997-10-14 |
| 5633750 | Optical fiber amplifier | Seiji Nogiwa, Kiyoshi Nakagawa | 1997-05-27 |
| 5596441 | Optical polarization controller | Nobuhiro Sakakibara, Kiyoshi Nakagawa | 1997-01-21 |