Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7917033 | Wavelength-multiplexing optical transmission system and wavelength-multiplexing optical transmission method | Tomoyuki Sakata, Akira Yamamoto, Koji Bato | 2011-03-29 |
| 6628674 | Apparatus depending on timing source for synchronization | — | 2003-09-30 |
| 6487223 | SDH transmission apparatus with flexible system configuration | — | 2002-11-26 |
| 5682408 | Method of transmitting sync clock and sync data between shelves of a synchronous digital hierarchy system | — | 1997-10-28 |
| 5600648 | SDH transmission system | Tomohisa Furuta, Yasuo Takami | 1997-02-04 |