Issued Patents All Time
Showing 1–25 of 33 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7426227 | Semiconductor laser device, optical disk apparatus and optical integrated unit | Masahiro Kume, Isao Kidoguchi, Ryoko Miyanaga, Masakatsu Suzuki | 2008-09-16 |
| 7212556 | Semiconductor laser device optical disk apparatus and optical integrated unit | Masahiro Kume, Isao Kidoguchi, Ryoko Miyanaga, Masakatsu Suzuki | 2007-05-01 |
| 7160748 | Method for fabricating nitride semiconductor, method for fabricating nitride semiconductor device, and nitride semiconductor device | Akihiko Ishibashi, Ayumu Tsujimura, Yoshiaki Hasegawa, Nobuyuki Otsuka, Gaku Sugahara +4 more | 2007-01-09 |
| 7108745 | Formation method for semiconductor layer | Yoshiaki Hasegawa, Ayumu Tsujimura, Isao Kidoguchi | 2006-09-19 |
| 7092423 | Semiconductor laser device, optical disk apparatus and optical integrated unit | Masahiro Kume, Isao Kidoguchi, Ryoko Miyanaga, Masakatsu Suzuki | 2006-08-15 |
| 6940100 | Group III-V nitride semiconductor light-emitting device which allows for efficient injection of electrons into an active layer | Ayumu Tsujimura, Yoshiaki Hasegawa, Akihiko Ishibashi, Isao Kidoguchi, Masakatsu Suzuki | 2005-09-06 |
| 6921678 | Method for fabricating nitride semiconductor, method for fabricating nitride semiconductor device, and nitride semiconductor device | Akihiko Ishibashi, Ayumu Tsujimura, Yoshiaki Hasegawa, Nobuyuki Otsuka, Gaku Sugahara +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, Akihiko Ishibashi, Ryoko Miyanaga, Gaku Sugahara, Masakatsu Suzuki +4 more | 2005-06-28 |
| 6867112 | Method of fabricating nitride semiconductor device | Akihiko Ishibashi, Isao Kidoguchi, Kenji Harafuji | 2005-03-15 |
| 6734530 | GaN-based compound semiconductor EPI-wafer and semiconductor element using the same | — | 2004-05-11 |
| 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, Akihiko Ishibashi, Ryoko Miyanaga, Gaku Sugahara, Masakatsu Suzuki +4 more | 2004-04-13 |
| 6667185 | Method of fabricating nitride semiconductor device | Akihiko Ishibashi, Isao Kidoguchi, Kenji Harafuji | 2003-12-23 |
| 6614059 | Semiconductor light-emitting device with quantum well | Ayumu Tsujimura, Yoshiaki Hasegawa, Akihiko Ishibashi, Isao Kidoguchi, Masakatsu Suzuki | 2003-09-02 |
| 6611005 | Method for producing semiconductor and semiconductor laser device | Ayumu Tsujimura, Yoshiaki Hasegawa, Akihiko Ishibashi, Isao Kidoguchi | 2003-08-26 |
| 6586774 | Method for fabricating nitride semiconductor, method for fabricating nitride semiconductor device, and nitride semiconductor device | Akihiko Ishibashi, Ayumu Tsujimura, Yoshiaki Hasegawa, Nobuyuki Otsuka, Gaku Sugahara +4 more | 2003-07-01 |
| 6562129 | Formation method for semiconductor layer | Yoshiaki Hasegawa, Ayumu Tsujimura, Isao Kidoguchi | 2003-05-13 |
| 6544869 | Method and apparatus for depositing semiconductor film and method for fabricating semiconductor device | Kenji Harafuji, Akihiko Ishibashi, Kiyoshi Ohnaka | 2003-04-08 |
| 6518082 | Method for fabricating nitride semiconductor device | Isao Kidoguchi, Akihiko Ishibashi, Masahiro Kume, Satoshi Kamiyama | 2003-02-11 |
| 6466597 | Semiconductor laser device | Masahiro Kume, Kenji Harafuji, Isao Kidoguchi, Satoshi Kamiyama, Ayumu Tsujimura +3 more | 2002-10-15 |
| 6324200 | Semiconductor laser device | Satoshi Kamiyama, Masahiro Kume, Ryoko Miyanaga, Isao Kidoguchi, Ayumu Tsujimura +2 more | 2001-11-27 |
| 6281522 | Method of manufacturing a semiconductor and a semiconductor light-emitting device | Akihiko Ishibashi, Yoshihiro Hara, Nobuyuki Uemura, Masahiro Kume | 2001-08-28 |
| 6265287 | Method for producing semiconductor layer for a semiconductor laser device | Ayumu Tsujimura, Yoshiaki Hasegawa, Akihiko Ishibashi, Isao Kidoguchi | 2001-07-24 |
| 6136626 | Semiconductor light-emitting device and production method thereof | Isao Kidoguchi, Hideto Adachi, Akihiko Ishibashi, Kiyoshi Ohnaka, Minoru Kubo | 2000-10-24 |
| 6133058 | Fabrication of semiconductor light-emitting device | Isao Kidoguchi, Hideto Adachi, Akihiko Ishibashi, Kiyoshi Ohnaka, Minoru Kubo | 2000-10-17 |
| 6072762 | Optical disk recording/reproducing method and apparatus for preventing wave length shift during recording and reproducing operations | Masahiro Kume, Isao Kidoguchi, Satoshi Kamiyama, Ayumu Tsujimura, Akihiko Ishibashi +2 more | 2000-06-06 |