Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8477819 | Semiconductor laser diode device and method of fabrication thereof | — | 2013-07-02 |
| 7666694 | Method for manufacturing semiconductor laser device and semiconductor laser device | Masahide Kobayashi | 2010-02-23 |
| 7633986 | Distributed feedback laser diode | Yasutaka Sakata | 2009-12-15 |
| 6141477 | Semiconductor optical amplification element | — | 2000-10-31 |
| 6052222 | Semiconductor optical amplifier | — | 2000-04-18 |
| 5770466 | Semiconductor optical integrated circuits and method for fabricating the same | Tatsuya Sasaki, Mitsuhiro Kitamura, Kiichi Hamamoto, Keiro Komatsu, Yasutaka Sakata | 1998-06-23 |
| 5659565 | Semiconductor optical device with mesa structure which is surrounded laterally by insulating mask for preventing current from leaking directly from cladding layer to substrate and process of fabrication thereof | — | 1997-08-19 |
| 5565693 | Semiconductor optical integrated circuits | Tatsuya Sasaki, Mitsuhiro Kitamura, Kiichi Hamamoto, Keiro Komatsu, Yasutaka Sakata | 1996-10-15 |
| 5374587 | Method of manufacturing optical semiconductor element | — | 1994-12-20 |