Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10415248 | Shingle with headlap mask | David C. Humphreys, Rodney Lewis | 2019-09-17 |
| 8438812 | Shingles and methods of applying shingles | Stephen Andrew McNally | 2013-05-14 |
| 6544374 | Method for making laminated roofing shingles | Devender Swaroop | 2003-04-08 |
| 6464821 | Method for preventing adhesion of multi-part release liners | Aaron R. Phillips | 2002-10-15 |
| 6220329 | Apparatus for making laminated roofing shingles | Devender Swaroop | 2001-04-24 |
| 5916654 | Method and apparatus for preventing adhesion of multi-part release liners | Aaron R. Phillips | 1999-06-29 |
| 4209487 | Method for corrosion inhibition | Ronald D. Hogue, Robert S. Mitchell | 1980-06-24 |