Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6108481 | Optical semiconductor device and its manufacturing method | Masaki Tohyama, Yuzo Hirayama | 2000-08-22 |
| 5970081 | Grating coupled surface emitting device | Yuzo Hirayama, Masaki Tohyama, Motoyasu Morinaga, Keiji Takaoka, Kazuhiro Inoue +1 more | 1999-10-19 |
| 5168077 | Method of manufacturing a p-type compound semiconductor thin film containing a III-group element and a v-group element by metal organics chemical vapor deposition | Yasuo Ashizawa, Takao Noda, Mitsuhiro Kushibe, Kazuhiro Eguchi, Yasuo Ohba +1 more | 1992-12-01 |