Issued Patents All Time
Showing 26–50 of 70 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7501667 | Nitride semiconductor light-emitting device | Yoshiaki Hasegawa, Toshiya Yokogawa | 2009-03-10 |
| 7470608 | Semiconductor light emitting device and fabrication method thereof | Toshiya Yokogawa, Kiyoshi Ohnaka, Susumu Koike | 2008-12-30 |
| 7407421 | Light source, optical pickup, and electronic apparatus | Isao Kidoguchi, Yasuo Kitaoka, Hiroyoshi Yajima, Keiji Ito, Yoshiaki Hasegawa +1 more | 2008-08-05 |
| 7368766 | Semiconductor light emitting element and method for fabricating the same | Satoshi Kamiyama, Masakatsu Suzuki, Takeshi Uenoyama, Kiyoshi Ohnaka, Akira Takamori +5 more | 2008-05-06 |
| 7338827 | Nitride semiconductor laser and method for fabricating the same | Gaku Sugahara, Yasutoshi Kawaguchi, Isao Kidoguchi, Toshiya Yokogawa | 2008-03-04 |
| 7221037 | Method of manufacturing group III nitride substrate and semiconductor device | Yasuo Kitaoka, Hisashi Minemoto, Isao Kidoguchi | 2007-05-22 |
| 7176115 | Method of manufacturing Group III nitride substrate and semiconductor device | Yasuo Kitaoka, Hisashi Minemoto, Isao Kidoguchi, Takatomo Sasaki, Yusuke Mori +1 more | 2007-02-13 |
| 7160748 | Method for fabricating nitride semiconductor, method for fabricating nitride semiconductor device, and nitride semiconductor device | Ayumu Tsujimura, Yoshiaki Hasegawa, Nobuyuki Otsuka, Gaku Sugahara, Ryoko Miyanaga +4 more | 2007-01-09 |
| 7056756 | Nitride semiconductor laser device and fabricating method thereof | Gaku Sugahara, Yoshiaki Hasegawa, Toshiya Yokogawa | 2006-06-06 |
| 7030417 | Semiconductor light emitting device and fabrication method thereof | Toshiya Yokogawa, Kiyoshi Ohnaka, Susumu Koike | 2006-04-18 |
| 6940100 | Group III-V nitride semiconductor light-emitting device which allows for efficient injection of electrons into an active layer | Ayumu Tsujimura, Yoshiaki Hasegawa, Isao Kidoguchi, Yuzaburo Ban, Masakatsu Suzuki | 2005-09-06 |
| 6927149 | Nitride semiconductor device and fabrication method thereof, and method for forming nitride semiconductor substrate | Gaku Sugahara, Yasutoshi Kawaguchi, Toshiya Yokogawa, Atsushi Matsubara | 2005-08-09 |
| 6921678 | Method for fabricating nitride semiconductor, method for fabricating nitride semiconductor device, and nitride semiconductor device | Ayumu Tsujimura, Yoshiaki Hasegawa, Nobuyuki Otsuka, Gaku Sugahara, Ryoko Miyanaga +4 more | 2005-07-26 |
| 6911351 | Method of fabricating nitride semiconductor, method of fabricating nitride semiconductor device, nitride semiconductor device, semiconductor light emitting device and method of fabricating the same | Isao Kidoguchi, Ryoko Miyanaga, Gaku Sugahara, Masakatsu Suzuki, Masahiro Kume +4 more | 2005-06-28 |
| 6867112 | Method of fabricating nitride semiconductor device | Isao Kidoguchi, Kenji Harafuji, Yuzaburo Ban | 2005-03-15 |
| 6861672 | Semiconductor light emitting element and method for fabricating the same | Satoshi Kamiyama, Masakatsu Suzuki, Takeshi Uenoyama, Kiyoshi Ohnaka, Akira Takamori +5 more | 2005-03-01 |
| 6858877 | Nitride semiconductor, method for manufacturing the same and nitride semiconductor device | Yasutoshi Kawaguchi, Ayumu Tsujimura, Nobuyuki Otsuka | 2005-02-22 |
| 6855571 | Method of producing GaN-based semiconductor laser device and semiconductor substrate used therefor | Gaku Sugahara, Atsushi Yamada, Toshiya Yokogawa | 2005-02-15 |
| 6806109 | Method of fabricating nitride based semiconductor substrate and method of fabricating nitride based semiconductor device | Hiroyuki Furuya, Toshiya Yokogawa, Yoshiaki Hasegawa | 2004-10-19 |
| 6777253 | Method for fabricating semiconductor, method for fabricating semiconductor substrate, and semiconductor light emitting device | Ayumu Tsujimura, Yasutoshi Kawaguchi, Nobuyuki Otsuka, Kiyoshi Ohnaka | 2004-08-17 |
| 6764871 | Method for fabricating a nitride semiconductor device | Yasutoshi Kawaguchi, Ayumu Tsujimura | 2004-07-20 |
| 6720586 | Method of fabricating nitride semiconductor, method of fabricating nitride semiconductor device, nitride semiconductor device, semiconductor light emitting device and method of fabricating the same | Isao Kidoguchi, Ryoko Miyanaga, Gaku Sugahara, Masakatsu Suzuki, Masahiro Kume +4 more | 2004-04-13 |
| 6667185 | Method of fabricating nitride semiconductor device | Isao Kidoguchi, Kenji Harafuji, Yuzaburo Ban | 2003-12-23 |
| 6614059 | Semiconductor light-emitting device with quantum well | Ayumu Tsujimura, Yoshiaki Hasegawa, Isao Kidoguchi, Yuzaburo Ban, Masakatsu Suzuki | 2003-09-02 |
| 6611005 | Method for producing semiconductor and semiconductor laser device | Ayumu Tsujimura, Yoshiaki Hasegawa, Isao Kidoguchi, Yuzaburo Ban | 2003-08-26 |