US2903407A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bituminous sand process
Assignee: Union Oil Company of California
•
Filing: 1956-04-16
•
Granted: 1959-09-08
•
Expires: 1976-04-16
Abstract
No abstract record available.
Inventors
- 👤 Paul W Fischer
- 👤 Kenny Vincent
- 👤 John W Scheffel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 13:38
CPC Classifications
C; C10; C10G; C10G1/00; C10G1/04; C10G1/047
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
166 words
IN A PROCESS WHEREIN A COMMIUTED HYDROCARBONACEOUS MINERAL SOLID COMPRISING A MATRIX OF INORGANIC MINERAL SOLIDS CONTAINING OCCLUDED HEAVY HYDROCARBONS IS MINED FROM THE EARTH, STORED FOR AN APPRECIABLE PERIOD OF TIME, AND THEREAFTER TREATED AT AN ELEVATED TEMPRATURE WITH AQUEOUS SODIUM SILICATE IN THE PRESENCE OF A HYDROCARBON DILUENT TO SEPARATE SAID OCCLUDED HYDSROCARBONS, THE IMPROVEMENT WHICH CONSISTS IN: MAINTAINING SAID MINED SOLIDS SUBSTANTIALLY ENTIRELY SUBMERGED IN AN AQUEOUS MEDIUM DURING SAID STORAGE PERIOD AND EFFECTING SAID SEPARATION TREATMENT BY WITHDRAWING SAID SOLIDS FROM SAID SUBMERGED STORAGE AND SUBSTANTIALLY IMMEDIATELY INTRODUCING SAID SOLIDS INTO A MIXING ZONE; WITHIN SAID MIXING ZONE ADMIXING SAID SOLIDS WITH BETWEEN ABOUT 0.1 AND ABOUT 2.5 BARRELS OF A RELATIVELY NONVOLATILE HYDROCARBON DILUENT PR TON OF SOLIDS AND WITH BETWEEN ABOUT 0.75 AND ABOUT 5.0 BARRELS PER TON OF SOLIDS OF WATER CONTAINING BETWEEN ABOUT 0.5 AND ABOUT 20 POUNDS PER BARREL OF AN AQUEOUS SODIUM SILICATE CONCENTRATION OF AT LEAST ABOUT 30 PERCENT BY WEIGHT CONCENTRATION, SAID SODIUM SILICATE
Claim 2
Dependent Claim
166 words
IN A PROCESS WHEREIN A COMMIUTED HYDROCARBONACEOUS MINERAL SOLID COMPRISING A MATRIX OF INORGANIC MINERAL SOLIDS CONTAINING OCCLUDED HEAVY HYDROCARBONS IS MINED FROM THE EARTH, STORED FOR AN APPRECIABLE PERIOD OF TIME, AND THEREAFTER TREATED AT AN ELEVATED TEMPRATURE WITH AQUEOUS SODIUM SILICATE IN THE PRESENCE OF A HYDROCARBON DILUENT TO SEPARATE SAID OCCLUDED HYDSROCARBONS, THE IMPROVEMENT WHICH CONSISTS IN: MAINTAINING SAID MINED SOLIDS SUBSTANTIALLY ENTIRELY SUBMERGED IN AN AQUEOUS MEDIUM DURING SAID STORAGE PERIOD AND EFFECTING SAID SEPARATION TREATMENT BY WITHDRAWING SAID SOLIDS FROM SAID SUBMERGED STORAGE AND SUBSTANTIALLY IMMEDIATELY INTRODUCING SAID SOLIDS INTO A MIXING ZONE; WITHIN SAID MIXING ZONE ADMIXING SAID SOLIDS WITH BETWEEN ABOUT 0.1 AND ABOUT 2.5 BARRELS OF A RELATIVELY NONVOLATILE HYDROCARBON DILUENT PR TON OF SOLIDS AND WITH BETWEEN ABOUT 0.75 AND ABOUT 5.0 BARRELS PER TON OF SOLIDS OF WATER CONTAINING BETWEEN ABOUT 0.5 AND ABOUT 20 POUNDS PER BARREL OF AN AQUEOUS SODIUM SILICATE CONCENTRATION OF AT LEAST ABOUT 30 PERCENT BY WEIGHT CONCENTRATION, SAID SODIUM SILICATE
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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) | 1962-09-07 | 1963-03-09 | 1963-09-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-09-07 | 1967-03-09 | 1967-09-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-09-07 | 1971-03-09 | 1971-09-08 | $7700.00 | Window Closed / Lapsed |