Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9583608 | Nitride semiconductor device and method for manufacturing nitride semiconductor device | Yasuhiro Yamada, Yoshiharu Anda | 2017-02-28 |
| 9536949 | Nitride semiconductor device comprising nitride semiconductor regrowth layer | Songbaek CHOE | 2017-01-03 |
| 7414261 | Ballistic semiconductor device | Nobuyuki Otsuka, Koichi Mizuno, Shigeo Yoshii | 2008-08-19 |
| 7323725 | Semiconductor device | Shigeo Yoshii, Nobuyuki Otsuka, Koichi Mizuno | 2008-01-29 |
| 6953954 | Plasma oscillation switching device | Shigeo Yoshii, Nobuyuki Otsuka, Koichi Mizuno, Toshiya Yokogawa | 2005-10-11 |
| 6903383 | Semiconductor device having a high breakdown voltage for use in communication systems | Toshiya Yokogawa, Masahiro Deguchi, Shigeo Yoshii, Hiroyuki Furuya | 2005-06-07 |
| 6861679 | Gallium indium nitride arsenide based epitaxial wafer, a hetero field effect transistor using the wafer, and a method of fabricating the hetero field effect transistor | Nobuyuki Otsuka, Koichi Mizuno, Shigeo Yoshii | 2005-03-01 |
| 6437362 | Avalanche photodiode | — | 2002-08-20 |