Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5269818 | Rhombohedral calcium carbonate and accelerated heat-aging process for the production thereof | June D. Passaretti | 1993-12-14 |
| 5227025 | Rhombohedral calcium carbonate and accelerated heat-aging process for the production thereof | June D. Passaretti | 1993-07-13 |
| 5215734 | Rhombohedral calcium carbonate and accelerated heat-aging process for the production thereof | June D. Passaretti | 1993-06-01 |