Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4222989 | Method for the manufacture of pure aluminum oxide from aluminum ore | Albert Schwind, Gunter Winkhaus, Joseph Schierholt | 1980-09-16 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4222989 | Method for the manufacture of pure aluminum oxide from aluminum ore | Albert Schwind, Gunter Winkhaus, Joseph Schierholt | 1980-09-16 |