Methods of and apparatus for hydrocarbon recovery
US4027731A · kind A · utility
20Cited by
7References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 26, 1975 |
| Grant date | Jun 7, 1977 |
| Priority date | — |
| Expiry date | Aug 26, 1995 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21C41/24
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Methods of and apparatus for recovering hydrocarbons from tar sands, oil shales, exhausted oil bearing formations and the like by solvent extraction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.