Issued Patents 2018
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9929828 | Optical add/drop multiplexer and method for adding/dropping optical signal | Tomoyuki Kato | 2018-03-27 |
| 9857662 | Optical frequency shift device and method | Tomoyuki Kato, Takeshi Hoshida | 2018-01-02 |