Issued Patents All Time
Showing 51–65 of 65 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5389571 | Method of fabricating a gallium nitride based semiconductor device with an aluminum and nitrogen containing intermediate layer | Tetsuya Takeuchi, Hiroshi Amano, Atsushi Watanabe, Katsuhide Manabe | 1995-02-14 |
| 5370738 | Compound semiconductor vapor phase epitaxial device | Atsushi Watanabe, Hiroshi Amano, Kazumasa Hiramatsu | 1994-12-06 |
| 5281830 | Light-emitting semiconductor device using gallium nitride group compound | Masahiro Kotaki, Hiroshi Amano | 1994-01-25 |
| 5278433 | Light-emitting semiconductor device using gallium nitride group compound with double layer structures for the n-layer and/or the i-layer | Katsuhide Manabe, Akira Mabuchi, Hisaki Kato, Michinari Sassa, Norikatsu Koide +2 more | 1994-01-11 |
| 5247533 | Gallium nitride group compound semiconductor laser diode | Nobuo Okazaki, Katsuhide Manabe, Hiroshi Amano | 1993-09-21 |
| 5239188 | Gallium nitride base semiconductor device | Tetsuya Takeuchi, Hiroshi Amano, Atsushi Watanabe, Katsuhide Manabe | 1993-08-24 |
| 5218216 | Gallium nitride group semiconductor and light emitting diode comprising it and the process of producing the same | Katsuhide Manabe, Nobuo Okazaki, Kazumasa Hiramatsu, Hiroshi Amano | 1993-06-08 |
| 5122845 | Substrate for growing gallium nitride compound-semiconductor device and light emitting diode | Katsuhide Manabe, Hisaki Kato, Kazumasa Hiramatsu, Hiroshi Amano | 1992-06-16 |
| 4855249 | Process for growing III-V compound semiconductors on sapphire using a buffer layer | Nobuhiko Sawaki | 1989-08-08 |
| 4476620 | Method of making a gallium nitride light-emitting diode | Yoshimasa Ohki, Yukio Toyoda, Hiroyuki Kobayashi | 1984-10-16 |
| 4473938 | Method for making a GaN electroluminescent semiconductor device utilizing epitaxial deposition | Hiroyuki Kobayashi, Yoshimasa Ohki, Yukio Toyoda | 1984-10-02 |
| 4408217 | GaN Electroluminescent semiconductor device and method for making the same | Hiroyuki Kobayashi, Yoshimasa Ohki, Yukio Toyoda | 1983-10-04 |
| 4396929 | Gallium nitride light-emitting element and method of manufacturing the same | Yoshimasa Ohki, Yukio Toyoda, Hiroyuki Kobayashi | 1983-08-02 |
| 4325070 | Recording head for facsimile receivers | Masaaki Ohsima, Nobuhide Matsuda, Michio Matsuki, Yoshio Tsukamoto, Hiromichi Kagi +1 more | 1982-04-13 |
| 4319259 | Electroluminescent element | Masaaki Ohsima | 1982-03-09 |