Issued Patents All Time
Showing 1–11 of 11 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9219111 | Nitride semiconductor structure and method of preparing the same | Yasuyuki Kobayashi, Kazuhide Kumakura, Tetsuya Akasaka | 2015-12-22 |
| 8486816 | Diamond semiconductor element and process for producing the same | Makoto Kasu, Kenji Ueda, Yoshiharu Yamauchi | 2013-07-16 |
| 8487319 | Diamond semiconductor element and process for producing the same | Makoto Kasu, Kenji Ueda, Yoshiharu Yamauchi | 2013-07-16 |
| 8328936 | Producing a diamond semiconductor by implanting dopant using ion implantation | Makoto Kasu, Kenji Ueda, Yoshiharu Yamauchi | 2012-12-11 |
| 8242511 | Field effect transistor using diamond and process for producing the same | Makoto Kasu, Kenji Ueda, Yoshiharu Yamauchi | 2012-08-14 |
| 8221548 | Diamond semiconductor element and process for producing the same | Makoto Kasu, Kenji Ueda, Yoshiharu Yamauchi | 2012-07-17 |
| 7973339 | Diamond semiconductor element and process for producing the same | Makoto Kasu, Kenji Ueda, Yoshiharu Yamauchi | 2011-07-05 |
| 7804106 | P-type nitride semiconductor structure and bipolar transistor | Kazuhide Kumakura, Naoki Kobayashi | 2010-09-28 |
| 7244520 | Substrate for nitride semiconductor growth | Kazuhide Kumakura, Masanobu Hiroki | 2007-07-17 |
| 6667498 | Nitride semiconductor stack and its semiconductor device | Kazuhide Kumakura, Naoki Kobayashi | 2003-12-23 |
| 4767494 | Preparation process of compound semiconductor | Naoki Kobayashi, Yoshiji Horikoshi | 1988-08-30 |