Roofing
US6355329B1 · kind B1 · utility
6Cited by
1References
28Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 1, 1999 |
| Grant date | Mar 12, 2002 |
| Priority date | — |
| Expiry date | Dec 1, 2019 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T442/198
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
Roofing of plastic sheet (preferably very flexible polypropylene) has embedded in it reinforcing threads of a higher tenacity (preferably ultra high molecular weight polyethylene) in a narrow mounting area along a panel edge, and other threads of lower tenacity in other areas of the panel (and preferably in the mounting area as well), the threads being preferably weft-knitted with nine by nine thread count throughout.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.