Issued Patents 2002
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6452701 | Wavelength division multiplexing communications network supervisory system | Takafumi Terahara, Takeo Osaka | 2002-09-17 |
| 6452721 | Method, device, and system for evaluating characteristics of optical fiber transmission line | Hiroyuki Deguchi | 2002-09-17 |
| 6404523 | Wavelength division multiplexing system and its termination | Hajime Morikawa | 2002-06-11 |