Issued Patents All Time
Showing 51–72 of 72 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7834423 | Method of producing a nitride semiconductor device and nitride semiconductor device | Seiji Nakahata, Hideaki Nakahata | 2010-11-16 |
| 7772585 | Nitride semiconductor substrate and method of producing same | Fumitaka Sato, Ryu Hirota, Seiji Nakahata, Hideaki Nakahata | 2010-08-10 |
| 7771532 | Nitride semiconductor substrate and method of producing same | Fumitaka Sato, Ryu Hirota, Seiji Nakahata, Hideaki Nakahata | 2010-08-10 |
| 7732236 | III nitride semiconductor crystal and manufacturing method thereof, III nitride semiconductor device manufacturing method thereof, and light emitting device | Seiji Nakahata, Hideaki Nakahata, Makoto Kiyama, Youichi Nagai, Takao Nakamura | 2010-06-08 |
| 7723142 | Growth method of GaN crystal, and GaN crystal substrate | Naoki Matsumoto, Fumitaka Sato, Seiji Nakahata, Takuji Okahisa | 2010-05-25 |
| 7691732 | Manufacturing method of nitride substrate, nitride substrate, and nitride-based semiconductor device | Takuji Okahisa, Hideaki Nakahata | 2010-04-06 |
| 7687822 | Light emitting apparatus | Youichi Nagai, Makoto Kiyama, Takao Nakamura, Takashi Sakurada, Katsushi Akita +3 more | 2010-03-30 |
| 7589000 | Fabrication method and fabrication apparatus of group III nitride crystal substance | Hitoshi Kasai, Takuji Okahisa, Shunsuke Fujita, Naoki Matsumoto, Hideyuki Ijiri +4 more | 2009-09-15 |
| 7528055 | Method of producing a nitride semiconductor device and nitride semiconductor device | Seiji Nakahata, Hideaki Nakahata | 2009-05-05 |
| 7485484 | Group III-V crystal | Seiji Nakahata, Ryu Hirota | 2009-02-03 |
| 7473315 | AlxInyGa1-x-yN mixture crystal substrate, method of growing AlxInyGa1-x-yN mixture crystal substrate and method of producing AlxInyGa1-x-yN mixture crystal substrate | Seiji Nakahata, Ryu Hirota, Kensaku Motoki, Takuji Okahisa | 2009-01-06 |
| 7390359 | Nitride semiconductor wafer | Michimasa Miyanaga, Takuji Okahisa | 2008-06-24 |
| 7303630 | Method of growing GaN crystal, method of producing single crystal GaN substrate, and single crystal GaN substrate | Kensaku Motoki, Takuji Okahisa, Ryu Hirota, Seiji Nakahata | 2007-12-04 |
| 7297625 | Group III-V crystal and manufacturing method thereof | Seiji Nakahata, Ryu Hirota | 2007-11-20 |
| 7294199 | Nitride single crystal and producing method thereof | Seiji Nakahata | 2007-11-13 |
| 7202509 | Light emitting apparatus | Youichi Nagai, Makoto Kiyama, Takao Nakamura, Takashi Sakurada, Katsushi Akita +3 more | 2007-04-10 |
| 7190004 | Light emitting device | Youichi Nagai, Makoto Kiyama, Takao Nakamura, Takashi Sakurada, Katsushi Akita +3 more | 2007-03-13 |
| 7129525 | Semiconductor light-emitting device | Masaki Ueno, Ryu Hirota, Hideaki Nakahata, Manabu Okui | 2006-10-31 |
| 7112826 | Single crystal GaN substrate semiconductor device | Kensaku Motoki, Takuji Okahisa, Seiji Nakahata, Ryu Hirota | 2006-09-26 |
| 6719082 | Device for preventing wheel lock of vehicle | Nobuki Hasegawa | 2004-04-13 |
| 6667184 | Single crystal GaN substrate, method of growing same and method of producing same | Kensaku Motoki, Takuji Okahisa, Seiji Nakahata, Ryu Hirota | 2003-12-23 |
| 6568763 | System for controlling operation of cylinder of vehicle | Seiichi Abe | 2003-05-27 |