Issued Patents 1994
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5340635 | Magnetic recording medium having a magnetic layer with a specified vickers indentation hardness or plastic deformation | Ryosuke Isobe | 1994-08-23 |
| 5324571 | Magnetic recording medium comprising a support and a plurality of layers in which the magnetic layer has a specified plastic deformation | Noboru Koyama, Narito Goto, Ryosuke Isobe | 1994-06-28 |
| 5314713 | Method for producing recording medium | Hiroshi Sato | 1994-05-24 |