Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6830948 | Method for producing group III nitride compound semiconductor and group III nitride compound semiconductor device | Masayoshi Koike, Akira Kojima, Toshio Hiramatsu | 2004-12-14 |
| 6680957 | Group III nitride compound semiconductor laser | Masayoshi Koike, Shiro Yamasaki, Seiji Nagai, Akira Kojima, Toshio Hiramatsu | 2004-01-20 |