Issued Patents All Time
Showing 1–10 of 10 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6115169 | Semiconductor optical modulator and integrated optical circuit device | Kazuhisa Takagi | 2000-09-05 |
| 5661741 | Semiconductor light emitting device, laser amplifier, and integrated light amplifier and wavelength variable filter | — | 1997-08-26 |
| 5617439 | Semiconductor laser device and semiconductor laser array device | — | 1997-04-01 |
| 5486490 | Method of making semiconductor laser | — | 1996-01-23 |
| 5214663 | Semiconductor laser | Tomoko Kadowaki, Toshitaka Aoyagi, Kazuhisa Takagi | 1993-05-25 |
| 5143864 | Method of producing a semiconductor laser | Akira Takemoto, Hitoshi Watanabe, Masatoshi Fujiwara | 1992-09-01 |
| 5093835 | Semiconductor laser device | Akira Takemoto, Hitoshi Watanabe, Masatoshi Fujiwara | 1992-03-03 |
| 4960730 | Method of making a semiconductor light emitting device using out-diffusion from a buried stripe | — | 1990-10-02 |
| 4894834 | Semiconductor laser and method for production thereof | Masatoshi Fujiwara, Syogo Takahashi | 1990-01-16 |
| 4888782 | Semiconductor light emitting device | — | 1989-12-19 |