Issued Patents 2004
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6836605 | Optical fiber preform, production method thereof, and optical fiber produced from the preform | Eiji Yanada, Masashi Onishi | 2004-12-28 |
| 6819477 | Raman amplifier module and optical transmission system using the same | Tetsufumi Tsuzaki, Masayuki Nishimura | 2004-11-16 |
| 6782172 | Optical fiber, optical transmission line and dispersion compensating module | Takatoshi Kato | 2004-08-24 |
| 6778322 | Four-wave mixing suppression in Raman amplifiers | Motoki Kakui | 2004-08-17 |
| 6697559 | Optical fiber and method of making the same | Masashi Onishi, Yoshio Yokoyama | 2004-02-24 |