Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11870208 | Optical fiber amplifier, optical fiber amplifier control method, and transmission system | Keiichi Matsumoto, Shigeyuki Yanagimachi | 2024-01-09 |
| 7978737 | Laser device, control device of laser device, method of controlling laser device, method of tuning wavelength of laser device and control data of laser device | Toshio Higashi, Yasuyuki Yamauchi, Hirokazu Tanaka, Junji Watanabe | 2011-07-12 |
| 7701984 | Laser module and method of controlling wavelength of external cavity laser | Toshio Higashi, Yasuyuki Yamauchi, Hirokazu Tanaka, Junji Watanabe | 2010-04-20 |