Issued Patents 2011
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8073325 | OSNR measuring apparatus and OSNR measuring method | — | 2011-12-06 |
| 8068730 | Wavelength division multiplex signal monitoring system and wavelength division multiplex transmission device equipped with the same | Yoshito Kachita, Ichiro Nakajima, Yasushi Sugaya | 2011-11-29 |
| 7983564 | Transmission system and transmission method | Hiroki Ooi, Akira Miura, Takeshi Hoshida, Kentaro Nakamura, Yasushi Sugaya | 2011-07-19 |