Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8189631 | External resonator-type wavelength tunable laser device | Shinya Sudo, Kenji Sato, Koji Kudo, Kenji Mizutani | 2012-05-29 |
| 7656911 | External resonator type wavelength-variable laser | Kenji Mizutani, Koji Kudo, Kenji Sato | 2010-02-02 |
| 7466736 | Semiconductor laser diode, semiconductor optical amplifier, and optical communication device | Kiichi Hamamoto | 2008-12-16 |