Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6225650 | GAN group crystal base member having low dislocation density, use thereof and manufacturing methods thereof | Kazuyuki Tadatomo, Hiroaki Okagawa, Youichiro Ohuchi, Kazumasa Hiramatsu, Nobuhiko Sawaki +2 more | 2001-05-01 |
| 5710440 | Semiconductor light emitting element with In GaAlP active layer of specified thickness | Hiroaki Okagawa, Takayuki Hashimoto, Tomoo Yamada, Kazuyuki Tadatomo | 1998-01-20 |
| 5635733 | Semiconductor light emitting element with a current diffusing layer having a changing carrier concentration therein | Hiroaki Okagawa, Takayuki Hashimoto, Tomoo Yamada, Kazuyuki Tadatomo | 1997-06-03 |