Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5340637 | Optical device diffraction gratings and a photomask for use in the same | Makoto Okai, Shinji Tsuji, Akio Ohishi, Hiroyoshi Matsumura, Tatsuo Harada +2 more | 1994-08-23 |
| 4905057 | Semiconductor devices | Akio Ohishi, Takao Kuroda, Shinji Tsuji, Hiroyoshi Matsumura | 1990-02-27 |
| 4841536 | Semiconductor laser devices | Aiko Ohishi, Naoki Chinone, Shinji Tsuji, Hitoshi Nakamura, Hiroyoshi Matsumura | 1989-06-20 |
| 4775980 | Distributed-feedback semiconductor laser device | Naoki Chinone, Shinji Tsuji, Yoshihisa Fujisaki, Yasutoshi Kashiwada, Hitoshi Nakamura +4 more | 1988-10-04 |
| 4665528 | Distributed-feedback semiconductor laser device | Naoki Chinone, Shinji Tsuji, Yoshihisa Fujisaki, Yasutoshi Kashiwada | 1987-05-12 |
| 4426700 | Semiconductor laser device | Atsutoshi Doi, Michiharu Nakamura, Shinji Tsuji, Takao Mori | 1984-01-17 |
| 4366569 | Semiconductor laser device including an arrangement for preventing laser degradation caused by excessive current flow | Michiharu Nakamura, Atsutoshi Doi, Shinji Tsuji, Yutaka Takeda, Takao Mori | 1982-12-28 |
| 4361887 | Semiconductor light emitting element | Michiharu Nakamura, Shigeo Yamashita, Tadashi Fukuzawa, Junichi Umeda | 1982-11-30 |
| 4288757 | Semiconductor laser device | Takashi Kajimura, Michiharu Nakamura, Takao Kuroda, Shigeo Yamashita, Jun-ichi Umeda | 1981-09-08 |