Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7221692 | Semiconductor laser device and its manufacturing method | Akira Tanaka, Yoshiyuki Itoh, Osamu Horiuchi, Koichi Gen-Ei, Hideo Shiozawa | 2007-05-22 |
| 5392311 | Laser element | — | 1995-02-21 |
| 5353298 | High power distributed feedback semiconductor laser excellent in linearity of light output | — | 1994-10-04 |
| 5221429 | Method of manufacturing phase-shifted diffraction grating | — | 1993-06-22 |
| 5212712 | Laser device and method of manufacturing the same | — | 1993-05-18 |