Issued Patents All Time
Showing 26–27 of 27 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5190891 | Method for fabricating a semiconductor laser device in which the P-type clad layer and the active layer are grown at different rates | Tatsuo Yokotsuka, Masato Nakajima, Tomoko Suzuki | 1993-03-02 |
| 5124995 | Semiconductor light-emitting device | Tatsuo Yokotsuka | 1992-06-23 |