Resaturation of asphalt shingles
US6495074B1 · kind B1 · utility
26Cited by
11References
20Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 2, 2000 |
| Grant date | Dec 17, 2002 |
| Priority date | — |
| Expiry date | May 2, 2020 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L2555/64
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A method of maintaining as well as restoring the condition of weathered asphalt shingles and strips which are applied to flat roofs, pitched roofs, or vertical walls. The process involves applying resaturant neat or as a water emulsion. Suitable resaturants include fatty acid methyl esters, petroleum distillates, and water emulsions thereof. The process restores the suppleness and softness of the weathered shingles or strip and adds about three years to the lifetime of the roof. The process may be repeated for additional lifetime extension.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.