Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5593766 | Composite for reinforcing bituminous roofing membranes including a lightweight grid of over-under construction | — | 1997-01-14 |
| 5439726 | Bituminous roofing membrane including a lightweight grid and over-under construction | — | 1995-08-08 |
| 5399419 | Reinforced film and method of manufacturing same | John Porter | 1995-03-21 |
| 5314556 | Process for manufacturing reinforced roofing membranes | — | 1994-05-24 |
| 5057172 | Method of manufacturing a reinforced film | — | 1991-10-15 |
| 4879163 | Textiles containing interstices and processes for making such textiles | — | 1989-11-07 |