Mineral surfaced asphalt-based roofing products with encapsulated healing agents and methods of producing the same
US8349435B2 · kind B2 · utility
5Cited by
25References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 26, 2008 |
| Grant date | Jan 8, 2013 |
| Priority date | — |
| Expiry date | Aug 30, 2028 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/2998
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
An asphalt-based sheet roofing material includes capsules on its upper surface. When struck, as by hailstones, the capsules break to release a film forming fluid that spreads over the surface to heal the damage created by the hailstones.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.