Issued Patents 1994
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5348920 | .theta.-alumina powder, preparation thereof and magnetic recording medium | Shoji Sugimoto, Hiroshi Umezaki | 1994-09-20 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5348920 | .theta.-alumina powder, preparation thereof and magnetic recording medium | Shoji Sugimoto, Hiroshi Umezaki | 1994-09-20 |