Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4352717 | Apparatus for production of spherical grain ferrite powder | Yasuo Watanabe, Yoshikazu Yamamichi | 1982-10-05 |
| 4226843 | Process and apparatus for production of spherical grain ferrite powder | Yasuo Watanabe, Yoshikazu Yamamichi | 1980-10-07 |