Issued Patents 1997
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5684823 | Method of fabricating a diffraction grating and a distributed feedback semiconductor laser incorporating the diffraction grating | Yutaka Mihashi | 1997-11-04 |
| 5671242 | Strained quantum well structure | Tohru Takiguchi | 1997-09-23 |
| 5621564 | Semiconductor optical modulator | Shigeki Kageyama, Toru Takiguchi | 1997-04-15 |