Issued Patents 1989
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4881238 | Semiconductor laser having quantum well active region doped with impurities | Naoki Chinone, Kazuhisa Uomi, Tadashi Fukuzawa, Hideaki Matsueda | 1989-11-14 |
| 4881235 | Semiconductor laser having a multiple quantum well structure doped with impurities | Naoki Chinone, Kazuhisa Uomi, Tadashi Fukuzawa, Hideaki Matsueda, Tsukuru Ohtoshi | 1989-11-14 |
| 4872175 | Semiconductor laser device having a lens-like refractive index distribution within the stripe | Shinichi Nakatsuka | 1989-10-03 |
| 4841531 | Semiconductor laser device | Masahiko Kondow, Shin Satoh, Shigekazu Minagawa, Akio Ohishi | 1989-06-20 |
| 4827483 | Semiconductor laser device and method of fabricating the same | Tadashi Fukuzawa, Naoki Chinone, Shin'ichi Nakatsuka, Katsutoshi Saito, Yuuichi Ono | 1989-05-02 |
| 4821275 | Laser diode | Shinichi Nakatsuka, Naoki Chinone, Kazuhisa Uomi, Yuichi Ono | 1989-04-11 |
| 4811354 | Semiconductor laser | Kazuhisa Uomi, Naoki Chinone, Misuzu Yoshizawa, Shin'ichi Nakatsuka, Yuichi Ono | 1989-03-07 |
| 4800565 | Semiconductor laser device having high optical intensity and reliability | Misuzu Yoshizawa, Kazuhisa Uomi, Toshihiro Kawano, Yuichi Ono | 1989-01-24 |
| 4797891 | Semiconductor laser | Kazuhisa Uomi, Misuzu Yoshizawa, Yuichi Ono, Naoki Chinone | 1989-01-10 |