Roof structure
US5142837A · kind A · utility
30Cited by
13References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 29, 1991 |
| Grant date | Sep 1, 1992 |
| Priority date | — |
| Expiry date | Nov 29, 2011 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31823
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A laminated roofing material includes an aluminum foil top sheet laminated to a polyethylene film by an ionomer resin. After the sheets are bonded together they are cooled to set the resin and a asphalt coating is applied to the exposed polyethylene sheet and covered with a release paper. The roofing material is applied over an underlayment to form a roof supported by conventional sheeting material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.