Issued Patents All Time
Showing 76–90 of 90 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6898361 | Dispersion-compensating optical fiber and optical transmission line | Eiji Yanada, Masashi Onishi | 2005-05-24 |
| 6862391 | Optical transmission line, and optical fiber and dispersion compensating module employed in the same | Akira Tada, Takatoshi Kato | 2005-03-01 |
| 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 |
| 6661958 | Optical fiber and nonlinear optical fiber, optical amplifier and wavelength converter using the same, and method of making optical fiber | Masashi Onishi, Toshiaki Okuno | 2003-12-09 |
| 6658190 | Optical fiber and optical communication system including the same | Takatoshi Kato | 2003-12-02 |
| 6522821 | Dispersion-compensating optical fiber and optical transmission system including the same | Motonori Nakamura, Takatoshi Kato | 2003-02-18 |
| 6519403 | Optical fiber and method of making the same | Masashi Onishi, Yoshio Yokoyama | 2003-02-11 |
| 6474108 | Fiber preform method with a hot drill-in step for a Ge-doped tube and an F-doped rod | Masashi Onishi, Yoshio Yokoyama | 2002-11-05 |
| 6477306 | Dispersion-compensating optical fiber, and, optical transmission line and dispersion-compensating module respectively including the same | Takatoshi Kato | 2002-11-05 |
| 6400877 | Negative-dispersion optical fiber and optical transmission line incorporating the same | Takatoshi Kato | 2002-06-04 |
| 6374027 | Optical fiber transmission-line | Masashi Onishi, Takatoshi Kato | 2002-04-16 |