US3075913A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Processing of bituminous sands
Assignee: Union Oil Company of California
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Filing: 1959-02-03
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Granted: 1963-01-29
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Expires: 1979-02-03
Abstract
No abstract record available.
Inventors
- 👤 John W Scheffel
- 👤 Paul W Fischer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 21:11
CPC Classifications
C; C10; C10G; C10G1/00; C10G1/04; C10G1/047
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
137 words
IN A PROCESS FOR THE RECOVERY OF HYDROCARBON OILS FROM CLAY-CONTAINING MINERAL SOLIDS HAVING SAID HYDROCARBON OIL DISPERSED THERETHROUGH WHEREIN (1) SAID SOLIDS ARE AGITATED WITH AN AQUEOUS ALKAI-METAL SILICATE SOLUTION AND A LIGHT HYDROCARBON DILUENT AT A MODERATELY ELEVATED TEMPERATURE FOR A PERIOD OF TIME SUFFICIENT TO REDUCE SAID SOLIDS TO A SUBSTANTIALLY HOMOGENEOUS PLUP, (2) SAID PULP IS TREATED TO SEPARATE A SOLIDS PHASE, A LIQUID HYDROCARBON PHASE COMPRISING THE HYDROCARBON OILS CONTAININED IN SAID MINERAL SOLIDS, AND AN AQUEOUS ALKALI-METAL SILICATE PHASE, (3) THE SEPARATED AQUEOUS ALKALI-METAL SILICATE PHASE IS RECYCLED TO THE AFORESAID STEP (1), AND (4) SAID SEPARATION TREATMENT IS SUCH THAT COLLOIDALLY DISPERSED CLAYACCUMULATES IN SAID RECYCLED AQUEOUS ALKALI-METAL SILICATE, THE METHOD OF SUBSTANTIALLY REDUCING ACCUMULATION WHICH COMPRISES ADDING TO SAID AQUEOUS ALKALI-METAL SILICATE SOLUTION A FLUOCCULANT CONSISTING OF CALCIUM CHLORIDE.
Claim 2
Dependent Claim
137 words
IN A PROCESS FOR THE RECOVERY OF HYDROCARBON OILS FROM CLAY-CONTAINING MINERAL SOLIDS HAVING SAID HYDROCARBON OIL DISPERSED THERETHROUGH WHEREIN (1) SAID SOLIDS ARE AGITATED WITH AN AQUEOUS ALKAI-METAL SILICATE SOLUTION AND A LIGHT HYDROCARBON DILUENT AT A MODERATELY ELEVATED TEMPERATURE FOR A PERIOD OF TIME SUFFICIENT TO REDUCE SAID SOLIDS TO A SUBSTANTIALLY HOMOGENEOUS PLUP, (2) SAID PULP IS TREATED TO SEPARATE A SOLIDS PHASE, A LIQUID HYDROCARBON PHASE COMPRISING THE HYDROCARBON OILS CONTAININED IN SAID MINERAL SOLIDS, AND AN AQUEOUS ALKALI-METAL SILICATE PHASE, (3) THE SEPARATED AQUEOUS ALKALI-METAL SILICATE PHASE IS RECYCLED TO THE AFORESAID STEP (1), AND (4) SAID SEPARATION TREATMENT IS SUCH THAT COLLOIDALLY DISPERSED CLAYACCUMULATES IN SAID RECYCLED AQUEOUS ALKALI-METAL SILICATE, THE METHOD OF SUBSTANTIALLY REDUCING ACCUMULATION WHICH COMPRISES ADDING TO SAID AQUEOUS ALKALI-METAL SILICATE SOLUTION A FLUOCCULANT CONSISTING OF CALCIUM CHLORIDE.
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) | 1966-01-28 | 1966-07-30 | 1967-01-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-01-28 | 1970-07-30 | 1971-01-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-01-28 | 1974-07-30 | 1975-01-29 | $7700.00 | Window Closed / Lapsed |