Issued Patents All Time
Showing 101–102 of 102 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4306921 | Production of magnetic powder | Sadao Iizuka, Yoshimi Moriya | 1981-12-22 |
| 4274865 | Production of magnetic powder | Sadao Iizuka, Yoshimi Moriya, Yuichi Omote | 1981-06-23 |