Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4727444 | Loading device for a cartridge | Yasuhisa Fukushima, Masuo Maruyama, Benichi Miyazaki | 1988-02-23 |
| 4700336 | Optical recording and playback apparatus using plural light spots | Tomio Yoshida, Shunji Ohara, Toshio Satoh | 1987-10-13 |
| 4562562 | Tracking system for controlling the radial positioning of a transducer on a disc medium | Mitsuro Moriya, Toshiji Kanamaru | 1985-12-31 |
| 4368526 | Servo control system for optical system which focuses a converging light beam on a recording disc | Shunji Harigae, Tomio Yoshida, Michiyoshi Nagashima, Toshio Sato | 1983-01-11 |
| 4272651 | Optical system having diode laser light source | Tomio Yoshida, Shunji Harigae, Toshio Sato | 1981-06-09 |