Issued Patents 1989
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4879609 | Rotary head type recording apparatus having an erasing function based on recording mode | Susumu Kozuki, Koji Takahashi, Keiji Satoh, Kenichi Nagasawa, Hiroo Edakubo | 1989-11-07 |
| 4843491 | Recording and reproducing apparatus with track pitch detection | — | 1989-06-27 |
| 4825307 | Information signal recording apparatus | Hiroyuki Takimoto, Keiji Satoh, Koji Takahashi, Hiroo Edakubo | 1989-04-25 |
| 4802031 | Tracking control using signals reproduced by erase head | Kenichi Nagasawa, Hiroyuki Takimoto, Hiroo Edakubo, Susumu Kozuki, Keiji Satoh | 1989-01-31 |