Method for progressive separation and extraction of raw materials from residential roofing products
US9440239B1 · kind B1 · utility
36Cited by
18References
18Claims
0Family size
Inventors
Key dates
| Filing date | Oct 12, 2015 |
| Grant date | Sep 13, 2016 |
| Priority date | — |
| Expiry date | Oct 12, 2035 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02W30/62
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
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, beneficiation and 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.