Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9702148 | Rubberized roof underlayment | Thomas J. Zickell | 2017-07-11 |
| 6531200 | Roofing material with encapsulated fibrous mat | Thomas J. Zickell, Charles Diamon | 2003-03-11 |
| 6385934 | Weatherproofing membrane having high traction surface | Thomas J. Zickell, Charles Diman | 2002-05-14 |