Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5516573 | Roofing materials having a thermoplastic adhesive intergace between coating asphalt and roffing granules | Billy L. George, Stefan A. Babirad, Vincent J. Laraia | 1996-05-14 |
| 5380552 | Method of improving adhesion between roofing granules and asphalt-based roofing materials | Billy L. George, Stefan A. Babirad, Vincent J. Laraia | 1995-01-10 |
| 5338368 | Method for removing oil or asphalt from inorganic particles having pigment in an outer layer thereof | Robert B. Fletcher, Phyllis F. Albert | 1994-08-16 |