Issued Patents 2003
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6626590 | Optical communication network | Naohide Nagatsu | 2003-09-30 |
| 6545780 | Wavelength allocation method, a transmission equipment and receiving equipment using this method and a wavelength division multiplex transmission system | Noboru Takachio, Shoko Ohteru | 2003-04-08 |