Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5581421 | Method for driving stepping motor for head seek in disk drive device | — | 1996-12-03 |
| 4742409 | Magnetic disc unit | Masaru Koyahara, Shigeki Koizumi, Tetsuo Tomita, Noriyuki Kawamura | 1988-05-03 |