Issued Patents All Time
Showing 25 most recent of 37 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10837124 | Gallium nitride substrate | Makoto Kiyama, Seiji Nakahata | 2020-11-17 |
| 10458043 | Gallium nitride substrate | Makoto Kiyama, Seiji Nakahata | 2019-10-29 |
| 10443151 | Gallium nitride substrate | Makoto Kiyama, Seiji Nakahata | 2019-10-15 |
| 10006147 | Gallium nitride substrate | Makoto Kiyama, Seiji Nakahata | 2018-06-26 |
| 8404569 | Fabrication method and fabrication apparatus of group III nitride crystal substance | Hitoshi Kasai, Takuji Okahisa, Shunsuke Fujita, Naoki Matsumoto, Hideyuki Ijiri +4 more | 2013-03-26 |
| 8310030 | III-nitride crystal substrate and III-nitride semiconductor device | Koji Uematsu, Tomohiro Kawase | 2012-11-13 |
| 8304334 | III-V compound crystal and semiconductor electronic circuit element | Seiji Nakahata, Koji Uematsu | 2012-11-06 |
| 8198177 | AlxInyGal-x-yN mixture crystal substrate, method of growing same and method of producing same | Seiji Nakahata, Kensaku Motoki, Takuji Okahisa, Kouji Uematsu | 2012-06-12 |
| 8134223 | III-V compound crystal and semiconductor electronic circuit element | Seiji Nakahata, Koji Uematsu | 2012-03-13 |
| 8067300 | AlxInyGa1-x-yN mixture crystal substrate, method of growing same and method of producing same | Seiji Nakahata, Kensaku Motoki, Takuji Okahisa, Kouji Uematsu | 2011-11-29 |
| 8038794 | Group III-nitride crystal, manufacturing method thereof, group III-nitride crystal substrate and semiconductor device | Takatomo Sasaki, Yusuke Mori, Masashi Yoshimura, Fumio Kawamura, Seiji Nakahata | 2011-10-18 |
| 8002892 | Group III nitride crystal substrate, method of its manufacture, and group III nitride semiconductor device | Seiji Nakahata, Masaki Ueno | 2011-08-23 |
| 7998847 | III-nitride crystal manufacturing method, III-nitride crystal substrate, and III-nitride semiconductor device | Koji Uematsu, Tomohiro Kawase | 2011-08-16 |
| 7905958 | Group III-nitride semiconductor crystal and manufacturing method thereof, and group III-nitride semiconductor device | Takatomo Sasaki, Yusuke Mori, Masashi Yoshimura, Fumio Kawamura, Seiji Nakahata | 2011-03-15 |
| 7892513 | Group III nitride crystal and method of its growth | Shinsuke Fujiwara, Hiroaki Yoshida, Koji Uematsu, Haruko Tanaka | 2011-02-22 |
| 7858502 | Fabrication method and fabrication apparatus of group III nitride crystal substance | Hitoshi Kasai, Takuji Okahisa, Shunsuke Fujita, Naoki Matsumoto, Hideyuki Ijiri +4 more | 2010-12-28 |
| 7794543 | Method of growing GaN crystal, method of producing single crystal GaN substrate, and single crystal GaN substrate | Kensaku Motoki, Takuji Okahisa, Seiji Nakahata | 2010-09-14 |
| 7771532 | Nitride semiconductor substrate and method of producing same | Koji Uematsu, Fumitaka Sato, Seiji Nakahata, Hideaki Nakahata | 2010-08-10 |
| 7772585 | Nitride semiconductor substrate and method of producing same | Koji Uematsu, Fumitaka Sato, Seiji Nakahata, Hideaki Nakahata | 2010-08-10 |
| 7655960 | A1xInyGa1-x-yN mixture crystal substrate, method of growing same and method of producing same | Seiji Nakahata, Kensaku Motoki, Takuji Okahisa, Kouji Uematsu | 2010-02-02 |
| 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 |
| 7534310 | Single crystal GaN substrate, method of growing single crystal GaN and method of producing single crystal GaN substrate | Kensaku Motoki, Takuji Okahisa, Seiji Nakahata | 2009-05-19 |
| 7485484 | Group III-V crystal | Seiji Nakahata, Koji Uematsu | 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, Kensaku Motoki, Takuji Okahisa, Koji Uematsu | 2009-01-06 |
| 7354477 | Method of growing GaN crystal, method of producing single crystal GaN substrate, and single crystal GaN substrate | Kensaku Motoki, Takuji Okahisa, Seiji Nakahata | 2008-04-08 |