US3726786A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for integration of extraction processing streams
Assignee: Petro Canada Exploration Inc
•
Filing: 1971-12-30
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Granted: 1973-04-10
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Expires: 1991-12-30
Abstract
Abstract DISCLOSED HEREIN IS A PROCESS WHEREIN OPTIMAL EXTRACTION CELL CONDITIONS ARE MAINTAINED DURING TAR SANDS PROCESSING THROUGH THE INTEGRATION OF TWO OR MORE EXTRACTION PROCESSING STREAMS. IN THE PROCESS, THE SOLIDS UNSATURATED EXTRACTION STREAMS OBTAINED DURING THE PROCESSING OF UPPER TAR AND BEDS ARE STIRRED AND CROSS-BLENDED FOR USE WHEREIN TAR SANDS ARE PROCESSED FROM THE LOWER TAR SAND BEDS EXHIBITING MAXIMUM TOLERABLE LIMITS OF SUSPENDED SOLIDS THEREIN THE EXTRACTION STREAMS SO AS TO OPTIMIZE WATER PROCESSING AND HEAT MAINTENANCE WITHIN THE TAR SANDS EXTRACTION CELL. D R A W I N G
Inventors
- 👤 R Given
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 02:32
CPC Classifications
C; C10; C10G; C10G1/00; C10G1/04; C10G1/047; C10C; C10C3/00; C10C3/007
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-04-09 | 1976-10-09 | 1977-04-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-09 | 1980-10-09 | 1981-04-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-09 | 1984-10-09 | 1985-04-10 | $7700.00 | Window Closed / Lapsed |