Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4523304 | Optical data recording and reproducing apparatus | Isao Satoh, Tomio Yoshida, Kenji Koishi | 1985-06-11 |
| 4484319 | Apparatus for locating a track on disc-like optical information carriers | Kenji Koishi, Tomio Yoshida, Isao Satoh | 1984-11-20 |
| 4426693 | Light source intensity control in an optical recording and reproducing apparatus | Isao Satoh, Tomio Yoshida, Kenji Koishi | 1984-01-17 |
| 4420828 | Optical recording and/or reproducing device | Tomio Yoshida, Michiyoshi Nagashima, Makoto Ichinose, Noboru Wakami | 1983-12-13 |
| 4385303 | Optical recording and reproducing disc | Nobuo Akahira, Michiyoshi Nagashima, Tomio Yoshida, Tadaoki Yamashita | 1983-05-24 |
| 4368526 | Servo control system for optical system which focuses a converging light beam on a recording disc | Tomio Yoshida, Yoshinobu Nakata, Michiyoshi Nagashima, Toshio Sato | 1983-01-11 |
| 4328506 | Optical recording device | Tomio Yoshida, Michiyoshi Nagashima, Makoto Ichinose, Noboru Wakami | 1982-05-04 |
| 4272651 | Optical system having diode laser light source | Tomio Yoshida, Yoshinobu Nakata, Toshio Sato | 1981-06-09 |