US3003945A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Separation of asphalt-type bituminous materials with acetone
Assignee: KERR MC GEE OIL IND Inc
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Filing: 1958-11-05
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Granted: 1961-10-10
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Expires: 1978-11-05
Abstract
No abstract record available.
Inventors
- 👤 Garwin Leo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 22:11
CPC Classifications
C; C10; C10C; C10C3/00; C10C3/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
132 words
A METHOD OF SEPARATING AN ASPHALT-TYPE BITUMINOUS MATERIAL INCLUDING ASPHALTENES INTO AT LEAST TWO FRACTIONS, WHICH METHOD COMPRISES SEPARATING A HEAVY FRACTION CONTAINING ESSENTIALLY ASPHALTENES FROM A LIGHTER SOLVENT FRACTION CONTAINING DISSOLVED RESIDUAL ASPHALT-TYPE BITUMINOUS MATERIAL BY TREATING IN A SINGLE TREATING ZONE AT ELEVATED TEMPERATURE AND PRESSURE EACH VOLUME OF THE ASPHALTTYPE BITUMINOUS MATERIAL WITH AT LEAST TWO VOLUMES OF A SOLVENT CONSISTING ESSENTIALLY OF ACETONE, THE TEMPERATURE OF TREATMENT BEING BETWEEN 200*F. AND ABOUT 400*F. AND THE PRESSURE BEING BETWEEN 200*F. AND ABOUT 400*F. OF THE SOLVENT AT THE HIGHEST TEMPERATURE PRESENT IN THE TREATING ZONE, THE SEPARATED HEAVY ASPHALTENE FRACTION BEING IN THE LIQUID PHASE AND HAVING A VISCOSITY WHEREBY IT IS FREELY FLOWABLE FROM THE TREATING ZONE, AND WITHDRAWING THE LIQUID PHASE ASPHALTENE FRACTION FROM THE TREATING ZONE.
Claim 2
Independent Claim
132 words
A METHOD OF SEPARATING AN ASPHALT-TYPE BITUMINOUS MATERIAL INCLUDING ASPHALTENES INTO AT LEAST TWO FRACTIONS, WHICH METHOD COMPRISES SEPARATING A HEAVY FRACTION CONTAINING ESSENTIALLY ASPHALTENES FROM A LIGHTER SOLVENT FRACTION CONTAINING DISSOLVED RESIDUAL ASPHALT-TYPE BITUMINOUS MATERIAL BY TREATING IN A SINGLE TREATING ZONE AT ELEVATED TEMPERATURE AND PRESSURE EACH VOLUME OF THE ASPHALTTYPE BITUMINOUS MATERIAL WITH AT LEAST TWO VOLUMES OF A SOLVENT CONSISTING ESSENTIALLY OF ACETONE, THE TEMPERATURE OF TREATMENT BEING BETWEEN 200*F. AND ABOUT 400*F. AND THE PRESSURE BEING BETWEEN 200*F. AND ABOUT 400*F. OF THE SOLVENT AT THE HIGHEST TEMPERATURE PRESENT IN THE TREATING ZONE, THE SEPARATED HEAVY ASPHALTENE FRACTION BEING IN THE LIQUID PHASE AND HAVING A VISCOSITY WHEREBY IT IS FREELY FLOWABLE FROM THE TREATING ZONE, AND WITHDRAWING THE LIQUID PHASE ASPHALTENE FRACTION FROM THE TREATING ZONE.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-10-09 | 1965-04-10 | 1965-10-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-10-09 | 1969-04-10 | 1969-10-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-10-09 | 1973-04-10 | 1973-10-10 | $7700.00 | Window Closed / Lapsed |