Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4858062 | Charging device | Naoji Hayakawa, Masanori Takenouchi, Kenji Nakamura, Fumitaka Kan, Yasuo Kozato | 1989-08-15 |
| 4829534 | Semiconductor laser device having a semiconductor region for creating a depletion layer in a laser active layer for controlling current flow therethrough | Seiichi Miyazawa, Hidetoshi Nojiri, Toshitami Hara, Akira Shimizu, Yoshinobu Sekiguchi | 1989-05-09 |
| 4796067 | Semiconductor device having a superlattice structure | Akira Shimizu, Toshitami Hara, Hidetoshi Nojiri, Seiichi Miyazawa, Yoshinobu Sekiguchi | 1989-01-03 |