Fire retardant elastomeric EPDM roof sheeting and flashing composites
US4810565A · kind A · utility
39Cited by
9References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 29, 1987 |
| Grant date | Mar 7, 1989 |
| Priority date | — |
| Expiry date | Jul 29, 2007 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31924
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A fire retardant composite roofing material comprising an upper layer of a fire retardant EPDM material and a lower layer of a non-fire retardant EPDM material, wherein this composite material is a cured sheet membrane, a vulcanizable flashing material, or non-vulcanizing flashing material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.