Roofing shingle
US4405680A · kind A · utility
48Cited by
7References
7Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 23, 1982 |
| Grant date | Sep 20, 1983 |
| Priority date | — |
| Expiry date | Dec 23, 2002 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T442/2992
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
This invention relates to a roofing shingle having improved low temperature flexibility comprising a flexibilized mat prepared by impregnating a glass fiber web with the blend of an unblown asphalt and a monoalkenyl arene-conjugated diene block copolymer, wherein the flexibilized mat is coated with a blend of an air-blown bitumen and a filler.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.