Issued Patents 2002
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6486068 | Method for manufacturing group III nitride compound semiconductor laser diodes | Shiro Yamasaki, Seiji Nagai, Isamu Akasaki, Hiroshi Amano, Isao Yamada +1 more | 2002-11-26 |
| 6471770 | Method of manufacturing semiconductor substrate | Seiji Nagai | 2002-10-29 |
| 6420733 | Semiconductor light-emitting device and manufacturing method thereof | Norikatsu Koide, Shinya Asami, Junichi Umezaki, Shiro Yamasaki, Seiji Nagai | 2002-07-16 |