Roofing composition
US7743573B1 · kind B1 · utility
6Cited by
36References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 5, 2008 |
| Grant date | Jun 29, 2010 |
| Priority date | — |
| Expiry date | May 12, 2028 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE04D1/28
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A roofing composition is formed as a shingle or from one or more separate sheets. The roofing composition includes a storage layer with an inert non-growing storage medium to absorb and detain precipitation for gradual release. The roofing composition reduces hydraulic discharge rates to avoid overloading downstream drainage systems.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.