Hydrocarbon recovery from diatomite
US4448669A · kind A · utility
14Cited by
5References
14Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 16, 1983 |
| Grant date | May 15, 1984 |
| Priority date | — |
| Expiry date | Mar 16, 2003 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S208/952
- 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.