Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9956579 | Device for dispensing granular roofing media on a moving sheet in a pattern | — | 2018-05-01 |
| 7323237 | Algae-resistant roofing material and methods | — | 2008-01-29 |
| 7125579 | Algae-resistant roofing material and methods | — | 2006-10-24 |
| 7048990 | Dual layer shingle | — | 2006-05-23 |
| 6334923 | Method of producing multiple laminated shingles | — | 2002-01-01 |
| 6235142 | Method of producing laminated shingle | — | 2001-05-22 |
| 5795389 | Method and apparatus for applying surfacing material to shingles | — | 1998-08-18 |
| 5664385 | Shingle with slots and method of making same | — | 1997-09-09 |
| 5186980 | Roofing shingles and method of making same | — | 1993-02-16 |