Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7449720 | Epitaxial wafer for semiconductor light-emitting devices, and semiconductor light-emitting device | Ryoji Suzuki | 2008-11-11 |
| 5340637 | Optical device diffraction gratings and a photomask for use in the same | Makoto Okai, Shinji Tsuji, Motohisa Hirao, Hiroyoshi Matsumura, Tatsuo Harada +2 more | 1994-08-23 |
| 5034942 | System having a function of reproducing optical information | Masayuki Inoue | 1991-07-23 |
| 4905057 | Semiconductor devices | Takao Kuroda, Shinji Tsuji, Motohisa Hirao, Hiroyoshi Matsumura | 1990-02-27 |
| 4841531 | Semiconductor laser device | Masahiko Kondow, Shin Satoh, Shigekazu Minagawa, Takashi Kajimura | 1989-06-20 |
| 4819036 | Semiconductor device | Takao Kuroda, Akiyoshi Watanabe, Shinji Tsuji, Hiroyoshi Matsumura | 1989-04-04 |