Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6228422 | Shuttle cutoff for applying granules to an asphalt coated sheet | James F. White, Carla A. Miller, Lawrence J. Grubka | 2001-05-08 |
| 5858095 | Shuttle cutoff for applying granules to an asphalt coated sheet | James F. White, Carla A. Miller, Lawrence J. Grubka | 1999-01-12 |
| D379672 | Tab portion of a roof shingle | Frank A. Wilgus, Carla A. Miller | 1997-06-03 |
| 5283080 | Method and apparatus for manufacturing a granule-covered roofing material by modifying a process parameter in response to measured reflected light | David Rodenbaugh, Lawrence J. Grubka | 1994-02-01 |
| 5102487 | Manufacturing roofing shingles | — | 1992-04-07 |
| 4824880 | Asphalt adhesives | Donald J. Algrim, William E. Uffner, Stephen J. Jones | 1989-04-25 |
| 4738884 | Asphalt adhesives superimposed on asphalt-based roofing sheet | Donald J. Algrim, William E. Uffner, Stephen J. Jones | 1988-04-19 |
| 4470237 | Strip shingles with foamed asphalt as the tab seal adhesive and method of manufacture | William W. Lincoln | 1984-09-11 |