Issued Patents All Time
Showing 26–46 of 46 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6946684 | Optical semiconductor device with low reflectance coating | Kazushige Kawasaki | 2005-09-20 |
| 6907057 | Semiconductor optical device and semiconductor laser module using the semiconductor optical device | Kazushige Kawasaki, Hiromasu Matsuoka | 2005-06-14 |
| 6819688 | Semiconductor laser device and optical fiber amplifier | Kiyohide Sakai, Yuuhiko Hamada, Takeshi Fujita, Yasuaki Yoshida, Tatsuo Hatta | 2004-11-16 |
| 6804282 | Semiconductor laser device | Kazushige Kawasaki | 2004-10-12 |
| 6618412 | Semiconductor laser | — | 2003-09-09 |
| 6606334 | Semiconductor laser | Kazushige Kawasaki | 2003-08-12 |
| 6285694 | Semiconductor laser | — | 2001-09-04 |
| 6249140 | Method of screening semiconductor laser device using temperature cycling and variable driving current | — | 2001-06-19 |
| 5675597 | Semiconductor laser device | — | 1997-10-07 |
| 5519720 | Semiconductor light emitting device | Ryoichi Hirano, Etsuji Omura, Akira Takemoto | 1996-05-21 |
| 5332695 | Method of manufacturing semi conductor device mounted on a heat sink | Yutaka Nagai, Toshitaka Aoyagi | 1994-07-26 |
| 5282219 | Semiconductor laser structure having a non-reflection film | Toshitaka Aoyagi | 1994-01-25 |
| 5247203 | Semiconductor device mounted on a heat sink with an intervening amorphous semiconductor material | Yutaka Nagai, Toshitaka Aoyagi | 1993-09-21 |
| 5185287 | Method for producing a quantum well structure | Toshitaka Aoyagi | 1993-02-09 |
| 5185290 | Method of coating facet of semiconductor optical element | Toshitaka Aoyagi | 1993-02-09 |
| 5177749 | Semiconductor laser device | Yutaka Nagai, Toshitaka Aoyagi | 1993-01-05 |
| 5170458 | Optical fiber light-amplifier system | Toshitaka Aoyagi | 1992-12-08 |
| 5161164 | Semiconductor laser device | Yutaka Nagai, Toshitaka Aoyagi | 1992-11-03 |
| 5043994 | Semiconductor laser device | Kenji Ikeda | 1991-08-27 |
| 4998258 | Semiconductor laser device | Kenji Ikeda, Yutaka Mihashi | 1991-03-05 |
| 4988156 | Bent waveguide for an optical integrated circuit | — | 1991-01-29 |