Issued Patents All Time
Showing 26–30 of 30 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5258780 | Beam recorder forming low density dots | Hitoshi Hattori, Masaaki Ishida, Susumu Imakawa, Yoshinobu Takeyama | 1993-11-02 |
| 5237579 | Semiconductor laser controller using optical-electronic negative feedback loop | Masaaki Ishida | 1993-08-17 |
| 5138623 | Semiconductor laser control device | Masaaki Ishida | 1992-08-11 |
| 5050177 | Laser diode driving circuit | — | 1991-09-17 |
| 5036519 | Semiconductor laser controller | Hiroshi Takahashi | 1991-07-30 |