Patent US4469220A successfully refreshed from Google Patents.
Patent US3131141A successfully refreshed from Google Patents.
US3131141A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Non-aqueous process for the recovery of bitumen from tar sands
Assignee: Jersey Production Research Co
•
Filing: 1961-09-07
•
Granted: 1964-04-28
•
Expires: 1981-09-07
Abstract
No abstract record available.
Inventors
- 👤 Robert C West
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 03:52
CPC Classifications
C; C10; C10G; C10G1/00; C10C; C10C3/00; C10C3/007
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
151 words
AN INTEGRATED MULTI-STAGE PROCESS FOR THE REMOVAL OF BITUMEN FROM TAR SANDS WHICH COMPRISES HEATING THE BITUMEN-CONTAINING TAR SANDS TO A TEMPERATURE IN THE RANGE FROM ABOUT 100 TO 140*F., CONTACTING THE HEATED TAR SANDS IN AN INITIAL SOLVENT CONTACTING STAGE WITH A LIGHT GAS OIL UNDER CONDITIONS TO SEGREGATE A BITUMEN-GAS OIL PHASE AND A SAND-GAS OIL PHASE, PROCESSING THE BITUMENGAS OIL PHASE TO SEPARATE A PHASE ESSENTIALLY COMPOSED OF BITUMEN, REMOVING SAID SAND-GAS OIL PHASE AND CONTACTING THE SAME IN A SECONDARY SOLVENT CONTACTING STAGE WITH A LIQUEFIED NORMALLY GASEOUS HYDROCARBON UNDER CONDITIONS TO SEGREGATE A SAND-LIQUEFIED NORMALLY GASEOUS HYDROCARBON PHASE AND A GAS OIL-LIQUEFIED NORMALLY GASEOUS HYDROCARBON PHASE, PASSING SAID LATTER PHASE TO A SEPARATION ZONE AND SEGREGATING THE LIQUEFIED NORMALLY GASEOUS HYDROCARBON FROM THE GAS OIL, PASSING THE SAND LIQUEFIED NORMALLY GASEOUS HYDROCARBON PHASE TO A SEPARATION ZONE AND SEPARATING SAND FROM SAID LIQUEFIED NORMALLY GASEOUS HYDROCARBON.
Claim 2
Dependent Claim
151 words
AN INTEGRATED MULTI-STAGE PROCESS FOR THE REMOVAL OF BITUMEN FROM TAR SANDS WHICH COMPRISES HEATING THE BITUMEN-CONTAINING TAR SANDS TO A TEMPERATURE IN THE RANGE FROM ABOUT 100 TO 140*F., CONTACTING THE HEATED TAR SANDS IN AN INITIAL SOLVENT CONTACTING STAGE WITH A LIGHT GAS OIL UNDER CONDITIONS TO SEGREGATE A BITUMEN-GAS OIL PHASE AND A SAND-GAS OIL PHASE, PROCESSING THE BITUMENGAS OIL PHASE TO SEPARATE A PHASE ESSENTIALLY COMPOSED OF BITUMEN, REMOVING SAID SAND-GAS OIL PHASE AND CONTACTING THE SAME IN A SECONDARY SOLVENT CONTACTING STAGE WITH A LIQUEFIED NORMALLY GASEOUS HYDROCARBON UNDER CONDITIONS TO SEGREGATE A SAND-LIQUEFIED NORMALLY GASEOUS HYDROCARBON PHASE AND A GAS OIL-LIQUEFIED NORMALLY GASEOUS HYDROCARBON PHASE, PASSING SAID LATTER PHASE TO A SEPARATION ZONE AND SEGREGATING THE LIQUEFIED NORMALLY GASEOUS HYDROCARBON FROM THE GAS OIL, PASSING THE SAND LIQUEFIED NORMALLY GASEOUS HYDROCARBON PHASE TO A SEPARATION ZONE AND SEPARATING SAND FROM SAID LIQUEFIED NORMALLY GASEOUS HYDROCARBON.
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) | 1967-04-28 | 1967-10-28 | 1968-04-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-04-28 | 1971-10-28 | 1972-04-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-04-28 | 1975-10-28 | 1976-04-28 | $7700.00 | Window Closed / Lapsed |