Issued Patents All Time
Showing 26–39 of 39 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4835929 | Laminated roofing hip | William R. Carroll, Bobbie J. Lloyd | 1989-06-06 |
| 4825616 | Roofing shingle | Stanley P. Frankoski, Frederick W. Sieling | 1989-05-02 |
| 4795661 | Process for the manufacture of asphalt shingles | Duane A. Davis, Stanley P. Frankoski, Bruno E. Magnus | 1989-01-03 |
| 4717614 | Asphalt shingle | Duane A. Davis, Stanley P. Frankoski, Bruno E. Magnus | 1988-01-05 |
| 4543158 | Sheet type felt | Eugene J. Flood, Frederick W. Sieling | 1985-09-24 |
| 4513045 | Sheet type felt | Eugene J. Flood, Frederick W. Sieling | 1985-04-23 |
| 4472243 | Sheet type roofing | Eugene J. Flood, Frederick W. Sieling | 1984-09-18 |
| 4373992 | Non-asbestos flooring felt containing particulate inorganic filler, a mixture of fibers and a binder | — | 1983-02-15 |
| 4284470 | High-strength roofing products using novel glass fiber mats | — | 1981-08-18 |
| 4269886 | Novel glass fiber mat | — | 1981-05-26 |
| 4258098 | Glass fiber mat with improved binder | Philip A. Cautilli | 1981-03-24 |
| 4242404 | High-strength glass fiber mat particularly useful for roofing products | V. Robert Canfield, B. Randall Ziegler | 1980-12-30 |
| 4233353 | High-strength built-up roofing using improved glass fiber mats | V. Robert Canfield, B. Randall Ziegler | 1980-11-11 |
| 4200487 | Economical method of making high-strength glass fiber mats particularly useful for roofing products | V. Robert Canfield, B. Randall Ziegler | 1980-04-29 |