Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7179667 | Semiconductor base material and method of manufacturing the material | Hiroaki Okagawa, Kazuyuki Tadatomo, Yoichiro Ouchi | 2007-02-20 |
| 7053420 | GaN group semiconductor light-emitting element with concave and convex structures on the substrate and a production method thereof | Kazuyuki Tadatomo, Hiroaki Okagawa, Yoichiro Ouchi | 2006-05-30 |