Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5686166 | Magnetic recording medium having specified base film surface characteristics | Kazumasa Yoneyama, Nobuaki Ito | 1997-11-11 |
| 5645918 | Magnetic recording medium having an aromatic polyamide substrate | Nobuaki Ito, Kazumasa Yoneyama | 1997-07-08 |