Issued Patents 1994
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5278433 | Light-emitting semiconductor device using gallium nitride group compound with double layer structures for the n-layer and/or the i-layer | Akira Mabuchi, Hisaki Kato, Michinari Sassa, Norikatsu Koide, Shiro Yamazaki +2 more | 1994-01-11 |