Issued Patents 2004
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6812496 | Group III nitride semiconductor laser device | Kunihiro Takatani, Shigetoshi Ito, Takayuki Yuasa, Mototaka Taneya | 2004-11-02 |
| 6773504 | Oxygen doping method to gallium nitride single crystal substrate and oxygen-doped N-type gallium nitride freestanding single crystal substrate | Masaki Ueno | 2004-08-10 |
| 6693021 | GaN single crystal substrate and method of making the same | Takuji Okahisa, Naoki Matsumoto | 2004-02-17 |