Method for progressive separation and extraction of raw materials from residential roofing products
US9156035B1 · kind B1 · utility
35Cited by
19References
19Claims
0Family size
Inventors
Key dates
| Filing date | Feb 26, 2014 |
| Grant date | Oct 13, 2015 |
| Priority date | — |
| Expiry date | Feb 26, 2034 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02W30/62
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
This invention relates to a progressive method of separating and extracting raw materials from residential roofing products for re-use as ingredients for asphalt and fiberglass related products, including roofing materials. The method includes reduction, separation and then extraction of raw materials. The resulting products are alternative roofing granules, asphalt coated limestone, limestone, recycled asphalt and recycled fiberglass strand powders.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.