Issued Patents All Time
Showing 26–47 of 47 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6580098 | Method for manufacturing gallium nitride compound semiconductor | — | 2003-06-17 |
| 6541293 | Semiconductor light-emitting device and manufacturing method thereof | Shinya Asami, Junichi Umezaki, Masayoshi Koike, Shiro Yamasaki, Seiji Nagai | 2003-04-01 |
| 6472690 | Gallium nitride group compound semiconductor | Katsuhide Manabe, Akira Mabuchi, Hisaki Kato, Michinari Sassa, Shiro Yamazaki +2 more | 2002-10-29 |
| 6472689 | Light emitting device | Katsuhide Manabe, Akira Mabuchi, Hisaki Kato, Michinari Sassa, Shiro Yamazaki +2 more | 2002-10-29 |
| 6423984 | Light-emitting semiconductor device using gallium nitride compound semiconductor | Hisaki Kato, Hiroshi Watanabe, Shinya Asami | 2002-07-23 |
| 6420733 | Semiconductor light-emitting device and manufacturing method thereof | Shinya Asami, Junichi Umezaki, Masayoshi Koike, Shiro Yamasaki, Seiji Nagai | 2002-07-16 |
| 6410939 | Semiconductor light-emitting device and method of manufacturing the same | Yoshiyuki Takahira | 2002-06-25 |
| 6362017 | Light-emitting semiconductor device using gallium nitride group compound | Katsuhide Manabe, Akira Mabuchi, Hisaki Kato, Michinari Sassa, Shiro Yamazaki +2 more | 2002-03-26 |
| 6326236 | Semiconductor light-emitting device and manufacturing method thereof | Shinya Asami, Junichi Umezaki, Masayoshi Koike, Shiro Yamasaki, Seiji Nagai | 2001-12-04 |
| 6249012 | Light emitting semiconductor device using gallium nitride group compound | Katsuhide Manabe, Akira Mabuchi, Hisaki Kato, Michinari Sassa, Shiro Yamazaki +2 more | 2001-06-19 |
| 6188087 | Semiconductor light-emitting device | Masayoshi Koike, Shiro Yamasaki, Isamu Akasaki, Hiroshi Amano | 2001-02-13 |
| 6121121 | Method for manufacturing gallium nitride compound semiconductor | — | 2000-09-19 |
| 6040588 | Semiconductor light-emitting device | Shinya Asami, Junichi Umezaki, Masayoshi Koike, Shiro Yamasaki, Seiji Nagai | 2000-03-21 |
| 5862167 | Light-emitting semiconductor device using gallium nitride compound | Michinari Sassa, Shiro Yamazaki, Junichi Umezaki, Naoki Shibata, Masayoshi Koike +2 more | 1999-01-19 |
| 5733796 | Light-emitting semiconductor device using gallium nitride group compound | Katsuhide Manabe, Akira Mabuchi, Hisaki Kato, Michinari Sassa, Shiro Yamazaki +2 more | 1998-03-31 |
| 5650641 | Semiconductor device having group III nitride compound and enabling control of emission color, and flat display comprising such device | Michinari Sassa, Masayoshi Koike, Katsuhide Manabe, Hisaki Kato, Naoki Shibata +2 more | 1997-07-22 |
| 5627109 | Method of manufacturing a semiconductor device that uses a sapphire substrate | Michinari Sassa | 1997-05-06 |
| 5620557 | Sapphireless group III nitride semiconductor and method for making same | Katsuhide Manabe, Masayoshi Koike, Hisaki Kato, Isamu Akasaki, Hiroshi Amano | 1997-04-15 |
| 5604763 | Group III nitride compound semiconductor laser diode and method for producing same | Hisaki Kato, Masayoshi Koike, Isamu Akasaki, Hiroshi Amano | 1997-02-18 |
| 5587593 | Light-emitting semiconductor device using group III nitrogen compound | Shiro Yamazaki, Junichi Umezaki, Shinya Asami | 1996-12-24 |
| 5583879 | Gallum nitride group compound semiconductor laser diode | Shiro Yamazaki, Katsuhide Manabe, Isamu Akasaki, Hiroshi Amano | 1996-12-10 |
| 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, Shiro Yamazaki +2 more | 1994-01-11 |