Issued Patents 2005
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6867909 | Filter with variable transmission character, optical transmission equipment and method of optical transmission | Daisuke Yoshida | 2005-03-15 |
| 6859308 | Optical amplifier | — | 2005-02-22 |
| 6839161 | Optical amplification apparatus | — | 2005-01-04 |
| 6839164 | Optical transmission equipment and supervisory system thereof | Tadashi Matsuoka | 2005-01-04 |