Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4670337 | Magnetic recording medium | Yasumichi Tokuoka, Hitoshi Arai, Norio Higuchi | 1987-06-02 |
| 4422119 | Leader tape | Yoshio Kawakami, Masatoshi Okamura, Haruo Shiba | 1983-12-20 |