Issued Patents 1997
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5623362 | Erbium-doped fiber amplifier and an optical fiber communication system | Jun Ohya | 1997-04-22 |
| 5598294 | Optical fiber amplifier and optical fiber communication system | Tomoaki Uno, Jun Ohya | 1997-01-28 |
| 5598491 | Optical fiber amplifier and optical fiber transmission apparatus | Jun Ohya, Tomoaki Uno | 1997-01-28 |