Issued Patents 2004
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6829083 | Method for gain equalization, and device and system for use in carrying out the method | — | 2004-12-07 |
| 6816683 | Wavelength division multiplexing communications network supervisory system | Takeo Osaka, Shin-ichirou Harasawa | 2004-11-09 |
| 6807376 | Gain equalizer which includes a plurality of optical filters for equalizing the gain of an optical amplifier | Naomasa Shimojoh, Terumi Chikama | 2004-10-19 |
| 6741389 | Optical transmission system and optical transmission method utilizing Raman amplification | Junichi Kumasako | 2004-05-25 |
| 6721481 | Distributed optical fiber amplifier using fiber with specific characteristic values | Rainer Hainberger, Takeshi Hoshida | 2004-04-13 |
| 6717730 | Tunable optical filter | Nobuhiro Fukushima | 2004-04-06 |
| 6693739 | Method for gain equalization, and device and system for use in carrying out the method | — | 2004-02-17 |