Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4814904 | Method of controlling erasing following format writing in a magnetic disc apparatus | Kimiko Shigihara, Akira Kurano | 1989-03-21 |
| 4805048 | Method for controlling to keep off defects on magnetic disks | Hisaharu Takeuchi, Hisashi Takamatsu, Yoshiro Shiroyanagi, Akira Kurano | 1989-02-14 |