Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5667639 | Optically whitened clay pigments | Carl J. Marshall, Jr. | 1997-09-16 |
| 5591256 | High performance synthetic alkali metal alumino-silicate, methods and uses, compositions and high solids reaction methods of their preparation | Richard Douglas Carter, Thad T. Broome, Kurt H. Moller | 1997-01-07 |