Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5021292 | Magnetic recording medium and magnetic coating composition therefor | Tateo Ishida | 1991-06-04 |
| 4770941 | Magnetic recording medium and a coating composition therefor | Masahiko Ikka | 1988-09-13 |