Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6824610 | Process for producing gallium nitride crystal substrate, and gallium nitride crystal substrate | Naotaka Kuroda | 2004-11-30 |
| 6812051 | Method of forming an epitaxially grown nitride-based compound semiconductor crystal substrate structure and the same substrate structure | Akira Usui, Yuichi Oshima | 2004-11-02 |