Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6821800 | Semiconductor light-emitting device and manufacturing method thereof | Norikatsu Koide, Shinya Asami, Junichi Umezaki, Masayoshi Koike, Seiji Nagai | 2004-11-23 |
| 6680957 | Group III nitride compound semiconductor laser | Masayoshi Koike, Yuta Tezen, Seiji Nagai, Akira Kojima, Toshio Hiramatsu | 2004-01-20 |