Issued Patents All Time
Showing 26–32 of 32 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4735889 | Optical recording medium | Kenryo Namba, Shigeru Asami, Toshiki Aoi, Kazuo Takahashi | 1988-04-05 |
| 4713314 | Optical recording medium | Kenryo Namba, Shigeru Asami, Toshiki Aoi, Kazuo Takahashi | 1987-12-15 |
| 4692855 | Constant voltage and frequency type PWM inverter with minimum output distortion | Suzuo Saito | 1987-09-08 |
| 4682094 | Control system for a power converter driving a synchronous motor | — | 1987-07-21 |
| 4599718 | Method for erasing a light recording medium | Shiro Nakagawa, Kenryo Nanba | 1986-07-08 |
| 4516234 | Optical recording system | Shiro Nakagawa | 1985-05-07 |
| 4412231 | Light recording medium | Kenryo Namba, Shiro Nakagawa | 1983-10-25 |