Separation of hydrocarbonaceous substances from mineral solids
US3941679A · kind A · utility
24Cited by
7References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 12, 1974 |
| Grant date | Mar 2, 1976 |
| Priority date | — |
| Expiry date | Apr 12, 1994 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10G1/04
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Methods of and apparatus for separating hydrocarbonaceous substances from mineral solids with which they are mixed, in situ or after they have been removed from the geological formation in which they occur. A solvent extraction technique is employed; and trichlorofluoromethane is used as, or a major constituent of, the extraction solvent.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.