Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11128380 | Signal light interruption detection device, optical amplifier, optical wavelength multiplex transmission device, and optical wavelength multiplex transmission system | Toshiyuki Tokura, Shun Chikamori, Kengo Takata | 2021-09-21 |