Issued Patents 1989
Showing 1–13 of 13 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4868838 | Semiconductor laser device | — | 1989-09-19 |
| 4860299 | Semiconductor laser device | Masahiro Hosoda, Kazuaki Sasaki, Masaki Kondo | 1989-08-22 |
| 4860297 | Quantum well semiconductor laser device | Toshiro Hayakawa, Takahiro Suyama, Kohsei Takahashi, Masafumi Kondo | 1989-08-22 |
| 4841533 | Semiconductor laser device having a graded index waveguide | Toshiro Hayakawa, Takahiro Suyama, Masafumi Kondo, Kohsei Takahashi | 1989-06-20 |
| 4835783 | Semiconductor laser | Takahiro Suyama, Toshiro Hayakawa, Kohsei Takahashi, Masafumi Kondo | 1989-05-30 |
| 4824518 | Method for the production of semiconductor devices | Toshiro Hayakawa, Takahiro Suyama, Kohsei Takahashi | 1989-04-25 |
| 4819245 | Semiconductor laser device having substriped channels for forming an active layer which is thin in an inside portion | Taiji Morimoto, Mototaka Taneya, Hiroshi Hayashi | 1989-04-04 |
| 4819244 | Semiconductor laser device | Hiroshi Hayashi, Taiji Morimoto | 1989-04-04 |
| 4817109 | External resonator type semiconductor laser apparatus | Nobuybuki Miyauchi, Osamu Yamamoto, Hiroshi Hayashi, Shigeki Maei | 1989-03-28 |
| 4815089 | Semiconductor laser | Nobuyuki Miyauchi, Shigeki Maei, Osamu Yamamoto, Taiji Morimoto, Hiroshi Hayashi | 1989-03-21 |
| 4807235 | Semiconductor laser device | Takahiro Suyama, Kohsei Takahashi, Toshiro Hayakawa, Masafumi Kondo | 1989-02-21 |
| 4806994 | Semiconductor device | Toshiro Hayakawa, Takahiro Suyama, Kohsei Takahashi | 1989-02-21 |
| 4803695 | Semiconductor laser apparatus having an external reflecting means | Osamu Yamamoto, Hiroshi Hayashi | 1989-02-07 |