Issued Patents All Time
Showing 51–75 of 86 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8357558 | Method of making semiconductor light-emitting device | Yohei Enya, Yusuke Yoshizumi, Katsushi Akita, Masaki Ueno, Takamichi Sumitomo +2 more | 2013-01-22 |
| 8306082 | Group-III nitride semiconductor laser device, and method of fabricating group-III nitride semiconductor laser device | Yusuke Yoshizumi, Yohei Enya, Masahiro Adachi, Katsushi Akita, Masaki Ueno +5 more | 2012-11-06 |
| 8304793 | III-nitride semiconductor optical device and epitaxial substrate | Yusuke Yoshizumi, Yohei Enya, Katsushi Akita, Masaki Ueno, Takao Nakamura | 2012-11-06 |
| 8304269 | Method of fabricating group III nitride semiconductor device | Yusuke Yoshizumi, Yohei Enya, Katsushi Akita, Masaki Ueno, Takamichi Sumitomo +1 more | 2012-11-06 |
| 8295317 | Method of making nitride semiconductor laser, method of making epitaxial wafer, and nitride semiconductor laser | Masaki Ueno | 2012-10-23 |
| 8284811 | Gallium nitride-based semiconductor laser diode | Takamichi Sumitomo, Yohei Enya, Yusuke Yoshizumi, Masaki Ueno, Katsushi Akita | 2012-10-09 |
| 8227277 | Group-III nitride semiconductor laser device, and method of fabricating group-III nitride semiconductor laser device | Yusuke Yoshizumi, Yohei Enya, Masahiro Adachi, Katsushi Akita, Masaki Ueno +5 more | 2012-07-24 |
| 8227898 | Ohmic contact on a p-type principal surface tilting with respect to the c-plane | Shinji Tokuyama, Masahiro Adachi, Yoshihiro Saito | 2012-07-24 |
| 8207556 | Group III nitride semiconductor device and epitaxial substrate | Yusuke Yoshizumi, Yohei Enya, Katsushi Akita, Masaki Ueno, Takamichi Sumitomo +1 more | 2012-06-26 |
| 8207544 | Group-III nitride semiconductor device, epitaxial substrate, and method of fabricating group-III nitride semiconductor device | Yohei Enya, Yusuke Yoshizumi, Takamichi Sumitomo, Katsushi Akita, Masaki Ueno +1 more | 2012-06-26 |
| 8183596 | High electron mobility transistor, epitaxial wafer, and method of fabricating high electron mobility transistor | Masaki Ueno, Yohei Enya, Takamichi Sumitomo, Yusuke Yoshizumi | 2012-05-22 |
| 8183071 | Method for producing nitride semiconductor optical device and epitaxial wafer | Katsushi Akita, Yohei Enya, Takamichi Sumitomo, Yusuke Yoshizumi, Masaki Ueno +1 more | 2012-05-22 |
| 8174035 | Nitride-based semiconductor light emitting device | Takamichi Sumitomo, Masaki Ueno, Yohei Enya, Yusuke Yoshizumi | 2012-05-08 |
| 8148716 | Group III nitride semiconductor optical device, epitaxial substrate, and method of making group III nitride semiconductor light-emitting device | Masaki Ueno, Yohei Enya, Yusuke Yoshizumi | 2012-04-03 |
| 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 |