Issued Patents 1989
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4860131 | Method for recorrecting head position in a disk drive | Toru Kowaguchi, Jun Ide, Tomoo Iizumi | 1989-08-22 |
| 4847704 | Disk driving device | Tomoo Iizumi | 1989-07-11 |
| 4839753 | Information recording disk | Jun Ide, Tomoo Iizumi, Yoshitaka Takahashi, Hiroshi Yoshida, Yuichi Hishi | 1989-06-13 |
| 4819095 | Method of controlling a disk head position by individually timing zones servo information | Isao Asano, Shoichiro SAITO, Toru Kowaguchi, Tetsuya Mitsuishi, Hiroshi Yoshida | 1989-04-04 |