Issued Patents 2021
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11165501 | Excitation light source apparatus and optical transmission system | Katsunori Imanishi, Toshiyuki Tokura, Shun Chikamori | 2021-11-02 |
| 11128380 | Signal light interruption detection device, optical amplifier, optical wavelength multiplex transmission device, and optical wavelength multiplex transmission system | Kanehiro Matsumoto, Toshiyuki Tokura, Shun Chikamori | 2021-09-21 |