Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4769293 | Magnetic recording medium and production thereof | Takeshi Matsuura, Masatoshi Terazawa, Takeshi Shibata | 1988-09-06 |
| 4305993 | Magnetic recording medium | Hiroshi Zaitsu | 1981-12-15 |