Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8981340 | Nitride semiconductor device and production method thereof | Yasutoshi Kawaguchi, Akihiko Ishibashi, Isao Kidoguchi, Toshiya Yokogawa | 2015-03-17 |
| 7846820 | Nitride semiconductor device and process for producing the same | Akihiko Ishibashi, Toshiya Yokogawa, Yoshiaki Hasegawa, Yasutoshi Kawaguchi, Isao Kidoguchi | 2010-12-07 |
| 7704860 | Nitride-based semiconductor device and method for fabricating the same | Yasutoshi Kawaguchi, Yoshiaki Hasegawa, Akihiko Ishibashi, Isao Kidoguchi, Toshiya Yokogawa | 2010-04-27 |
| 7160748 | Method for fabricating nitride semiconductor, method for fabricating nitride semiconductor device, and nitride semiconductor device | Akihiko Ishibashi, Ayumu Tsujimura, Yoshiaki Hasegawa, Nobuyuki Otsuka, Gaku Sugahara +4 more | 2007-01-09 |
| 6958493 | Method for fabricating semiconductor light emitting device | Yoshiaki Hasegawa, Gaku Sugahara | 2005-10-25 |
| 6921678 | Method for fabricating nitride semiconductor, method for fabricating nitride semiconductor device, and nitride semiconductor device | Akihiko Ishibashi, Ayumu Tsujimura, Yoshiaki Hasegawa, Nobuyuki Otsuka, Gaku Sugahara +4 more | 2005-07-26 |
| 6884648 | Method for fabricating semiconductor light emitting device | Yoshiaki Hasegawa, Gaku Sugahara | 2005-04-26 |
| 6586774 | Method for fabricating nitride semiconductor, method for fabricating nitride semiconductor device, and nitride semiconductor device | Akihiko Ishibashi, Ayumu Tsujimura, Yoshiaki Hasegawa, Nobuyuki Otsuka, Gaku Sugahara +4 more | 2003-07-01 |