Issued Patents All Time
Showing 176–181 of 181 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6934454 | Distributed optical amplifying apparatus, optical communication station, optical communication system, and optical fiber cable | Takafumi Terahara, Rainer Hainberger | 2005-08-23 |
| 6885499 | Optical amplifying apparatus for amplifying wide-wavelength-band light, optical sending apparatus, optical transmission system, and optical amplifying method | Takafumi Terahara | 2005-04-26 |
| 6862134 | Distributed optical amplifier, amplifying method, and optical communication system | Takafumi Terahara | 2005-03-01 |
| 6775424 | Modulation and filtration of optical signals | Seemant Choudhary | 2004-08-10 |
| 6721481 | Distributed optical fiber amplifier using fiber with specific characteristic values | Takafumi Terahara, Rainer Hainberger | 2004-04-13 |
| 6512628 | Distributed optical amplifier, amplifying method, and optical communication system | Takafumi Terahara | 2003-01-28 |