US3053750A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Treatment of petroleum fractions for the separation of asphaltic material
Assignee: Gulf Research and Development Co
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Filing: 1960-05-09
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Granted: 1962-09-11
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Expires: 1980-05-09
Abstract
No abstract record available.
Inventors
- 👤 Beuther Harold
- 👤 Richard A Flinn
- 👤 Olaf A Larson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 08:23
CPC Classifications
C; C10; C10G; C10G55/00; C10G55/02; C10G55/04; C10G21/00; C10G21/003; E; E01; E01H; E01H5/00; E01H5/04; E01H5/08; E01H5/09
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
144 words
THE PROCESS WHICH COMPRISES IN COMBINATION VISBREAKING A RESIDUAL PETROLEUM FRACTIN, REMOVING HYDROCARBONS BOILING BELOW ABOUT 400*F. FROM THE VISBROKEN RESIDUAL FRACTION, INTERMIXING THE VISBROKEN RESIDUAL FRACTION WITH A DEASPHALTING SOLVENT IN AN AMOUNT SUFFICIENT TO CAUSE PRECIPITATIN OF BETWEEN ABOUT 25 AND 75 PERCENT OF THE ASPHALTIC MATERIAL PRESENT, HEATING THE MIXTURE TO AN ELEVATED TEMPERATURE WHICH IS ABOVE ABOUT 180*F. BUT WHICH IS BELOW THE SOFTENING POINT OF THE ASPHALTIC MATERIAL AND WHICH IS BELOW THE BOILIG POINT OF THE DEASPHALTING SOLVENT UNDER THE CONDITIONS OF USE, ADDING ADDITIONAL DEASPHALTING SOLVENT TO THE HEATED MIXTURE, SAID ADDITIONAL SOLVENT BEING AT A LOWER TEMPERATURE THAN THAT TO WHICH THE VISBROKEN RESIDUAL FRACTION AND SOLVENT MIXTURE IS HEATED, WHEREBY THE HEATED MIXTURE IS QUENCHED TO A TEMPERATURE BELOW ABOUT 150*F., AND SEPARATING THE PRECIPITATED ASPHALTIC MATERIAL FROM THE HYDROCARBON COMPONENTS OF THE SOLUTION FRACTION.
Claim 2
Dependent Claim
144 words
THE PROCESS WHICH COMPRISES IN COMBINATION VISBREAKING A RESIDUAL PETROLEUM FRACTIN, REMOVING HYDROCARBONS BOILING BELOW ABOUT 400*F. FROM THE VISBROKEN RESIDUAL FRACTION, INTERMIXING THE VISBROKEN RESIDUAL FRACTION WITH A DEASPHALTING SOLVENT IN AN AMOUNT SUFFICIENT TO CAUSE PRECIPITATIN OF BETWEEN ABOUT 25 AND 75 PERCENT OF THE ASPHALTIC MATERIAL PRESENT, HEATING THE MIXTURE TO AN ELEVATED TEMPERATURE WHICH IS ABOVE ABOUT 180*F. BUT WHICH IS BELOW THE SOFTENING POINT OF THE ASPHALTIC MATERIAL AND WHICH IS BELOW THE BOILIG POINT OF THE DEASPHALTING SOLVENT UNDER THE CONDITIONS OF USE, ADDING ADDITIONAL DEASPHALTING SOLVENT TO THE HEATED MIXTURE, SAID ADDITIONAL SOLVENT BEING AT A LOWER TEMPERATURE THAN THAT TO WHICH THE VISBROKEN RESIDUAL FRACTION AND SOLVENT MIXTURE IS HEATED, WHEREBY THE HEATED MIXTURE IS QUENCHED TO A TEMPERATURE BELOW ABOUT 150*F., AND SEPARATING THE PRECIPITATED ASPHALTIC MATERIAL FROM THE HYDROCARBON COMPONENTS OF THE SOLUTION FRACTION.
References Cited (Backward Citations)
US2943050A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-09-10 | 1966-03-12 | 1966-09-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-09-10 | 1970-03-12 | 1970-09-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-09-10 | 1974-03-12 | 1974-09-11 | $7700.00 | Window Closed / Lapsed |