Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5340392 | Method and product of calcium sulfate dihydrate as filler in aqueous polymer dispersions | C. Eric Westbrook | 1994-08-23 |
| 4824653 | Method of bleaching limestone | Gregory R. Sharp | 1989-04-25 |
| 4661164 | Method of tinting a mineral filler | — | 1987-04-28 |