Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4556965 | Information recording apparatus having automatic focusing | Yoshito Tsunoda, Kazuo Shigematsu | 1985-12-03 |
| 4308612 | Optical information recording apparatus including error checking circuit | Yoshito Tsunoda | 1981-12-29 |
| 4301527 | Optical head for a videodisc recorder/player | Yoshito Tsunoda, Kazuo Shigematsu, Kimio Tatsuno | 1981-11-17 |
| 4298974 | Optical head for a videodisc player/recorder | Yoshito Tsunoda, Kimio Tatsuno, Kunio Aiki, Ryoichi Ito | 1981-11-03 |
| 4283785 | Optical information recording apparatus | Yoshito Tsunoda | 1981-08-11 |
| 4241240 | Optical information recording apparatus | Kazuo Shigematsu, Keizo Kato, Seiji Yonezawa, Fumiyuki Inose, Kimio Tatsuno +1 more | 1980-12-23 |