Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4222798 | Method of manufacturing ferromagnetic metal powder | Yasumichi Tokuoka | 1980-09-16 |
| 4221614 | Method of manufacturing ferromagnetic magnetic metal powder | Yasumichi Tokuoka | 1980-09-09 |