Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4871605 | Inorganic fiber mat based bituminous sheet materials | George Stepien, Jr., Paul Morris | 1989-10-03 |
| 4588634 | Coating formulation for inorganic fiber mat based bituminous roofing shingles | George Stepien, Jr., Paul Morris | 1986-05-13 |
| 4194023 | Controlled deposition of asphalt emulsions | Donald R. Cushman, John W. Schick | 1980-03-18 |