Method of separating and extracting raw materials from asphaltic limestone powder
US11591524B2 · kind B2 · utility
1Cited by
19References
5Claims
0Family size
Inventor
Key dates
| Filing date | May 7, 2018 |
| Grant date | Feb 28, 2023 |
| Priority date | — |
| Expiry date | Mar 9, 2041 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02W30/91
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
This invention relates to manufacturing briquettes, pellets and shapes from recycled asphaltic limestone powder derived from waste residential roofing products. Briquettes and pellets are manufactured through a densification process at varying temperatures, creating recycled asphalt pellets, asphalt limestone pellets and bio mass and coal fines briquettes. Various shapes, including curbs and posts, are manufactured through heat and pressure in molds. Seawalls, walkways and wall panels are manufactured by blending asphaltic limestone powders with polymer resins and extruded or pultruded into shapes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.