Solvent Extractor
US4741806A · kind A · utility
7Cited by
9References
1Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 21, 1984 |
| Grant date | May 3, 1988 |
| Priority date | — |
| Expiry date | Mar 21, 2004 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10G1/04
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Supercritical extraction of diatomaceous earth results in a much more significant improvement in hydrocarbon recovery over Fischer retorting than achievable with tar sands. Process and apparatus for supercritical extraction of diatomaceous earth are disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.