Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5021292 | Magnetic recording medium and magnetic coating composition therefor | Kyoiti Imai | 1991-06-04 |
| 4937151 | Coating composition with vinyl chloride polymer for magnetic recording medium | Yoshiyuki Yasuhara | 1990-06-26 |