Issued Patents 1989
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4885753 | Semiconductor laser device of variable wavelength type | Makoto Okai, Shinji Tsuji, Shinji Sakano, Naoki Chinone | 1989-12-05 |
| 4881238 | Semiconductor laser having quantum well active region doped with impurities | Naoki Chinone, Tadashi Fukuzawa, Hideaki Matsueda, Takashi Kajimura | 1989-11-14 |
| 4881235 | Semiconductor laser having a multiple quantum well structure doped with impurities | Naoki Chinone, Tadashi Fukuzawa, Hideaki Matsueda, Takashi Kajimura, Tsukuru Ohtoshi | 1989-11-14 |
| 4873691 | Wavelength-tunable semiconductor laser | Shinji Tsuji, Shinji Sakano, Makoto Okai, Naoki Chinone | 1989-10-10 |
| 4835578 | Semiconductor device having a quantum wire and a method of producing the same | Tsukuru Ohtoshi, Tadashi Fukuzawa, Naoki Chinone | 1989-05-30 |
| 4821275 | Laser diode | Shinichi Nakatsuka, Naoki Chinone, Yuichi Ono, Takashi Kajimura | 1989-04-11 |
| 4811354 | Semiconductor laser | Naoki Chinone, Misuzu Yoshizawa, Shin'ichi Nakatsuka, Takashi Kajimura, Yuichi Ono | 1989-03-07 |
| 4800565 | Semiconductor laser device having high optical intensity and reliability | Misuzu Yoshizawa, Toshihiro Kawano, Yuichi Ono, Takashi Kajimura | 1989-01-24 |
| 4797891 | Semiconductor laser | Misuzu Yoshizawa, Yuichi Ono, Naoki Chinone, Takashi Kajimura | 1989-01-10 |