Issued Patents 2003
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6569704 | Group III-V semiconductor light emitting devices with reduced piezoelectric fields and increased efficiency | Tetsuya Takeuchi, Norihide Yamada, Isamu Akasaki | 2003-05-27 |
| 6537513 | Semiconductor substrate and method for making the same | Tetsuya Takeuchi, Isamu Akasaki | 2003-03-25 |
| 6534791 | Epitaxial aluminium-gallium nitride semiconductor substrate | Nobuaki Hayashi, Tetsuya Takeuchi, Isamu Akasaki | 2003-03-18 |