Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6437320 | Optical amplifier control unit, optical amplification apparatus, and transmission system | Takashi Yoshida | 2002-08-20 |
| 6101010 | Pass-monitoring apparatus of optical network system | — | 2000-08-08 |