Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6221151 | Gypsum set accelerator and method of making the same | Frank H. Campbell, Robert Piasecki, Larry W. Kingston | 2001-04-24 |
| 5858083 | Cementitious gypsum-containing binders and compositions and materials made therefrom | Elisha Stav, Ronald S. Finkelstein, Daniel A. Winkowski, Lambert J. Metz, Patrick J. Mudd | 1999-01-12 |
| 5718759 | Cementitious gypsum-containing compositions and materials made therefrom | Elisha Stav, Ronald S. Finkelstein | 1998-02-17 |
| 5685903 | Cementitious gypsum-containing compositions and materials made therefrom | Elisha Stav, Ronald S. Finkelstein | 1997-11-11 |
| 4948647 | Gypsum backer board | — | 1990-08-14 |
| 4564544 | Fire-resistant gypsum board | James J. Segada | 1986-01-14 |
| 4502901 | Manufacture of gypsum board from FGD gypsum | — | 1985-03-05 |