Issued Patents 1989
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4885732 | Optical pickup apparatus for detecting and correcting focusing and tracking errors in detected recorded signals | Hiroshi Sunagawa, Toshiaki Suhara | 1989-12-05 |
| 4868803 | Magneto-optic pickup head including tracking and focusing error correction | Hiroshi Sunagawa, Toshiaki Suhara | 1989-09-19 |
| 4859033 | Method of producing optical head assembly | Keizo Kono, Mitsushige Kondou, Natsuro Tsubouchi, Shiro Hine, Toshiaki Suhara | 1989-08-22 |
| 4837096 | Semiconductive or conductive polymers, method of producing the same and batteries using the polymers as active materials | Okitoshi Kimura, Toshiyuki Ohsawa, Toshiyuki Kabata, Kunitsugu Aramaki | 1989-06-06 |
| 4833561 | Pickup apparatus for magneto-optical recording medium | Hiroshi Sunagawa, Toshiaki Suhara | 1989-05-23 |