Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4748081 | Magnetic recording medium having an improved magnetic layer using particulate alpha-Fe.sub.2 O.sub.3 and carbon black | Osamu Kobayashi, Yukio Matsumoto, Hitoshi Takita, Tsunehide Naruse | 1988-05-31 |
| 4699840 | Magnetic recording medium | Tsutomu Yashiro, Hiroshi Togashi | 1987-10-13 |