Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4777027 | Continuous process for preparing phosphoric acid and calcium sulphate | Armand L. Davister | 1988-10-11 |
| 4588570 | Method for the preparation of phosphoric acid and calcium sulphate | Armand L. Davister, Andre R. Dubreuco | 1986-05-13 |