Issued Patents 2017
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9711945 | Method of designing semiconductor laser device, method of designing raman amplifier, methods of manufacturing semiconductor laser device, semiconductor laser device, raman amplifier, and optical communication system | Hideaki Hasegawa, Noriyuki Yokouchi, Taketsugu SAWAMURA, Junji Yoshida | 2017-07-18 |
| 9601905 | Optical semiconductor device, semiconductor laser module, and optical fiber amplifier | Junji Yoshida, Hirokazu Itoh, Yuichiro Irie, Taketsugu SAWAMURA | 2017-03-21 |