Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4904627 | Alkaline earth metal spinel/kaolin clays and processes for making | — | 1990-02-27 |
| 4728635 | Alkaline earth metal spinels and processes for making | William E. Cormier, Gerald M. Woltermann | 1988-03-01 |