US3044948A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Recovery of oil from tar sands
Assignee: Texaco Inc
•
Filing: 1958-07-03
•
Granted: 1962-07-17
•
Expires: 1978-07-03
Abstract
No abstract record available.
Inventors
- 👤 Eastman Du Bois
- 👤 Warren G Schlinger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 20:05
CPC Classifications
C; C10; C10G; C10G1/00; C10G1/08; C10G1/083; C10G47/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
71 words
A METHOD OF RECOVERING OIL OF IMPROVED PHYSICAL PROPERTIES FROM TAR SAND WHICH COMPRIESES FROMING A FLOWABLE MIXTURE OF TAR SAND IN HYDROCARBON OIL, PASSING SAID MIXTURE TOGETHER WITH FROM 1,000 TO 100,000 STANDARED CUBIC FEET OF HYDROGEN PER BARREL OF OIL CONTAINED IN SAID MIXTURE THROUGH A TUBULAR REACTION ZONE OF RELATIVELY SMALL DIAMETER UNDER HIGHLY TURBULENT FLOW CONDITIONS WHEREIN A TURBULENCE LEVEL ABOVE 100 AS EXPRESSED BY THE RATIO
Claim 2
Independent Claim
71 words
A METHOD OF RECOVERING OIL OF IMPROVED PHYSICAL PROPERTIES FROM TAR SAND WHICH COMPRIESES FROMING A FLOWABLE MIXTURE OF TAR SAND IN HYDROCARBON OIL, PASSING SAID MIXTURE TOGETHER WITH FROM 1,000 TO 100,000 STANDARED CUBIC FEET OF HYDROGEN PER BARREL OF OIL CONTAINED IN SAID MIXTURE THROUGH A TUBULAR REACTION ZONE OF RELATIVELY SMALL DIAMETER UNDER HIGHLY TURBULENT FLOW CONDITIONS WHEREIN A TURBULENCE LEVEL ABOVE 100 AS EXPRESSED BY THE RATIO
References Cited (Backward Citations)
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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) | 1965-07-16 | 1966-01-15 | 1966-07-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-07-16 | 1970-01-15 | 1970-07-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-07-16 | 1974-01-15 | 1974-07-17 | $7700.00 | Window Closed / Lapsed |