Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5053893 | Method of and device for demagnetizing magnetic recording medium | Youichi Hayata | 1991-10-01 |
| 4956728 | Method of and device for demagnetizing magnetic recording medium | Youichi Hayata | 1990-09-11 |