Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7589001 | Semiconductor base and its manufacturing method, and semiconductor crystal manufacturing method | Kazuyuki Tadatomo, Hiroaki Okagawa, Masahiro Koto | 2009-09-15 |
| 7504324 | Semiconductor base and its manufacturing method, and semiconductor crystal manufacturing method | Kazuyuki Tadatomo, Hiroaki Okagawa, Masahiro Koto | 2009-03-17 |
| 7179667 | Semiconductor base material and method of manufacturing the material | Hiroaki Okagawa, Kazuyuki Tadatomo, Takashi Tsunekawa | 2007-02-20 |
| 7115486 | Semiconductor base and its manufacturing method, and semiconductor crystal manufacturing method | Kazuyuki Tadatomo, Hiroaki Okagawa, Masahiro Koto | 2006-10-03 |
| 7053420 | GaN group semiconductor light-emitting element with concave and convex structures on the substrate and a production method thereof | Kazuyuki Tadatomo, Hiroaki Okagawa, Takashi Tsunekawa | 2006-05-30 |
| 6940098 | Semiconductor base and its manufacturing method, and semiconductor crystal manufacturing method | Kazuyuki Tadatomo, Hiroaki Okagawa, Masahiro Koto | 2005-09-06 |
| 6794210 | Method for growing GaN compound semiconductor crystal and semiconductor substrate | Hiroaki Okagawa, Masahiro Koto, Kazuyuki Tadatomo | 2004-09-21 |
| 6700179 | Method for growing GaN compound semiconductor crystal and semiconductor substrate | Hiroaki Okagawa, Masahiro Koto, Kazuyuki Tadatomo | 2004-03-02 |