Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6373610 | Optical surge suppressing apparatus | Nobutaka Watanabe | 2002-04-16 |
| 6081359 | Transmitting apparatus and receiving apparatus for wavelength-division-multiplex signal transmission | Tsutomu Tajima | 2000-06-27 |