Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4797270 | Method for the obtention of an especial alumina from the powder produced in metallurgical alumina calcination | Jose M. Alvarado Cendan | 1989-01-10 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4797270 | Method for the obtention of an especial alumina from the powder produced in metallurgical alumina calcination | Jose M. Alvarado Cendan | 1989-01-10 |