US3117922A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Recovery of bitumen from bituminous sand
Assignee: Cities Service Research and Development Co
•
Filing: 1960-08-25
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Granted: 1964-01-14
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Expires: 1980-08-25
Abstract
No abstract record available.
Inventors
- 👤 Thomas S Leary
- 👤 James H Cottrell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 18:16
CPC Classifications
C; C10; C10G; C10G1/00; C10G1/006
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
80 words
THE PROCESS FOR RECOVERING BITUMEN ROM BITUMINOUS SAND CONTAINING THE SAME WHICH COMPRISES FORMING A SLURRY OF SAID BITUMINOUS SAND AND BETWEEN ABOUT 1 AND ABOUT 5 BARRELS PER BARREL OF BITUMEN OF A RELATIVELY HEAVY LIQUID HYDROCARBON SOLVENT BOILING BETWEEN ABOUT 400 AND ABOUT 700*F., DRAINING HYDROCARBON LIQUID FROM SAID SLURRY ON A TWO DIMENSIONAL FILTER ZONE AND THEN WASHING THE RESULTING SAND BED REMAINING ON SAID FILTER ZONE WITH BETWEEN ABOUT 1 AND ABOUT 5 BARRELS PER BARREL
Claim 2
Dependent Claim
80 words
THE PROCESS FOR RECOVERING BITUMEN ROM BITUMINOUS SAND CONTAINING THE SAME WHICH COMPRISES FORMING A SLURRY OF SAID BITUMINOUS SAND AND BETWEEN ABOUT 1 AND ABOUT 5 BARRELS PER BARREL OF BITUMEN OF A RELATIVELY HEAVY LIQUID HYDROCARBON SOLVENT BOILING BETWEEN ABOUT 400 AND ABOUT 700*F., DRAINING HYDROCARBON LIQUID FROM SAID SLURRY ON A TWO DIMENSIONAL FILTER ZONE AND THEN WASHING THE RESULTING SAND BED REMAINING ON SAID FILTER ZONE WITH BETWEEN ABOUT 1 AND ABOUT 5 BARRELS PER BARREL
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-01-13 | 1967-07-15 | 1968-01-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-01-13 | 1971-07-15 | 1972-01-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-01-13 | 1975-07-15 | 1976-01-14 | $7700.00 | Window Closed / Lapsed |