Issued Patents 1989
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4881235 | Semiconductor laser having a multiple quantum well structure doped with impurities | Naoki Chinone, Kazuhisa Uomi, Hideaki Matsueda, Takashi Kajimura, Tsukuru Ohtoshi | 1989-11-14 |
| 4881238 | Semiconductor laser having quantum well active region doped with impurities | Naoki Chinone, Kazuhisa Uomi, Hideaki Matsueda, Takashi Kajimura | 1989-11-14 |
| 4861130 | Optical modulating device utilizing polariton substance | Toshio Katsuyama, Hiroyoshi Matsumura, Hiroaki Inoue, Naoki Chinone | 1989-08-29 |
| 4847573 | Optical modulator | Eizaburo Yamada, Kenji Hiruma, Hiroyoshi Matsumura | 1989-07-11 |
| 4835578 | Semiconductor device having a quantum wire and a method of producing the same | Tsukuru Ohtoshi, Kazuhisa Uomi, Naoki Chinone | 1989-05-30 |
| 4827483 | Semiconductor laser device and method of fabricating the same | Naoki Chinone, Shin'ichi Nakatsuka, Katsutoshi Saito, Takashi Kajimura, Yuuichi Ono | 1989-05-02 |