Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10774535 | Asphalt shingles with a fire-retardant additive | Jonathan M. Verhoff | 2020-09-15 |
| RE46177 | Method of manufacturing a shingle with reinforced nail zone | Donn R. Vermilion, Stephanie A. Rinne, Michael S. Ugorek, John Scowden, D. Greg Hendershot +2 more | 2016-10-11 |
| 8430983 | Method of manufacturing a shingle with reinforced nail zone | Donn R. Vermilion, Stephanie A. Rinne, Michael S. Ugorek, John Scowden, D. Greg Hendershot +2 more | 2013-04-30 |