Process for solvent deasphalting heavy hydrocarbon fractions
US4440633A · kind A · utility
22Cited by
17References
8Claims
0Family size
Assignee
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Key dates
| Filing date | Apr 30, 1982 |
| Grant date | Apr 3, 1984 |
| Priority date | — |
| Expiry date | Apr 30, 2002 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10G21/003
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Heavy hydrocarbon fractions are made free of asphaltenes and/or resins by extraction with a deasphalting solvent in the presence of ultrasonic radiation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.