Issued Patents 2004
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6821800 | Semiconductor light-emitting device and manufacturing method thereof | Norikatsu Koide, Shinya Asami, Junichi Umezaki, Masayoshi Koike, Shiro Yamasaki | 2004-11-23 |
| 6790279 | Method for manufacturing group III nitride compound semiconductor and a light-emitting device using group III nitride compound semiconductor | Masayoshi Koike | 2004-09-14 |
| 6716655 | Group III nitride compound semiconductor element and method for producing the same | Masayoshi Koike, Kazuyoshi Tomita | 2004-04-06 |
| 6679947 | Semiconductor substrate | Masayoshi Koike | 2004-01-20 |
| 6680957 | Group III nitride compound semiconductor laser | Masayoshi Koike, Shiro Yamasaki, Yuta Tezen, Akira Kojima, Toshio Hiramatsu | 2004-01-20 |