Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6630019 | Calcium phosphate colorants and method for making same | John A. Kostinko | 2003-10-07 |
| 6143280 | Color containing silica resistant to dye migration and method of making the same | John A. Kostinko | 2000-11-07 |
| 6074629 | Dentifrice with a dye absorbing silica for imparting a speckled appearance thereto | John A. Kostinko, James Sumpter | 2000-06-13 |