Issued Patents 2011
Showing 1–12 of 12 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8071986 | Nitride semiconductor light-emitting element | Katsushi Akita, Hideki Hirayama | 2011-12-06 |
| 8067257 | Nitride based semiconductor optical device, epitaxial wafer for nitride based semiconductor optical device, and method of fabricating semiconductor light-emitting device | Masaki Ueno, Yohei Enya, Katsushi Akita, Yusuke Yoshizumi, Takamichi Sumitomo +1 more | 2011-11-29 |
| 8053806 | Group III nitride semiconductor device and epitaxial substrate | Yusuke Yoshizumi, Yohei Enya, Katsushi Akita, Masaki Ueno, Takamichi Sumitomo +1 more | 2011-11-08 |
| 8048702 | Method of fabricating nitride-based semiconductor optical device | Yohei Enya, Yusuke Yoshizumi, Masaki Ueno, Katsushi Akita | 2011-11-01 |
| 7973322 | Nitride semiconductor light emitting device and method for forming the same | Katsushi Akita, Keiji Ishibashi, Hitoshi Kasai | 2011-07-05 |
| 7968864 | Group-III nitride light-emitting device | Katsushi Akita, Hitoshi Kasai, Kensaku Motoki | 2011-06-28 |
| 7955881 | Method of fabricating quantum well structure | Katsushi Akita, Takamichi Sumitomo, Yohei Enya, Masaki Ueno | 2011-06-07 |
| 7949026 | Group III nitride semiconductor laser | Katsushi Akita, Yusuke Yoshizumi | 2011-05-24 |
| 7939354 | Method of fabricating nitride semiconductor laser | Katsushi Akita, Yusuke Yoshizumi | 2011-05-10 |
| 7933303 | Group-III nitride semiconductor laser device, and method for fabricating group-III nitride semiconductor laser device | Yusuke Yoshizumi, Yohei Enya, Masahiro Adachi, Katsushi Akita, Masaki Ueno +5 more | 2011-04-26 |
| 7883915 | Method of making nitride semiconductor laser, method of making epitaxial wafer, and nitride semiconductor laser | Masaki Ueno | 2011-02-08 |
| 7884351 | Nitride semiconductor light-emitting device | Katsushi Akita, Yusuke Yoshizumi | 2011-02-08 |