Issued Patents 2004
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6748176 | Optical dropping apparatus and optical add/drop multiplexer | Keiko Takeda, Kaoru Moriya | 2004-06-08 |
| 6744958 | Apparatus and method of compensating for wavelength dispersion of optical transmission line | Hisashi Takamatsu, Kazuo Yamane, Takashi Tsuda | 2004-06-01 |
| 6738182 | Optical fiber amplifier | Norifumi Shukunami, Manabu Watanabe, Hisashi Takamatsu, Keiko Sasaki, Tomoaki Takeyama +3 more | 2004-05-18 |