Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4881235 | Semiconductor laser having a multiple quantum well structure doped with impurities | Naoki Chinone, Kazuhisa Uomi, Tadashi Fukuzawa, Takashi Kajimura, Tsukuru Ohtoshi | 1989-11-14 |
| 4881238 | Semiconductor laser having quantum well active region doped with impurities | Naoki Chinone, Kazuhisa Uomi, Tadashi Fukuzawa, Takashi Kajimura | 1989-11-14 |