US2808109A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Water flooding compositions
Assignee: ConocoPhillips Co
•
Filing: 1956-01-09
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Granted: 1957-10-01
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Expires: 1976-01-09
Abstract
No abstract record available.
Inventors
- 👤 James C Kirk
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 14:18
CPC Classifications
C; C09; C09K; C09K8/00; C09K8/58; C09K8/584; Y; Y10; Y10S; Y10S507/00; Y10S507/935; Y10S507/936
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
47 words
A FLOODING PROCESS FOR RECOVERING OIL FROM SUBTERRANEAN SANDS AND OTHER OIL-BEARING STRATA WHICH COMPRISES FLOODING SAID SUBTERRANEAN SANDS AND OTHER OIL-BEARING STRATA WITH AN AQUEOUS OIL- DISPLACING SOLUTION COMPRISING WATER, A SODIUM ALKARYL SULFONATE HAVING A COMBINING WEIGHT OF 410, AND A WATER SOLUBLE ALIPHATIC ALCOHOL.
Claim 2
Dependent Claim
47 words
A FLOODING PROCESS FOR RECOVERING OIL FROM SUBTERRANEAN SANDS AND OTHER OIL-BEARING STRATA WHICH COMPRISES FLOODING SAID SUBTERRANEAN SANDS AND OTHER OIL-BEARING STRATA WITH AN AQUEOUS OIL- DISPLACING SOLUTION COMPRISING WATER, A SODIUM ALKARYL SULFONATE HAVING A COMBINING WEIGHT OF 410, AND A WATER SOLUBLE ALIPHATIC ALCOHOL.
References Cited (Backward Citations)
US2531166A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-09-30 | 1961-04-01 | 1961-10-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-09-30 | 1965-04-01 | 1965-10-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-09-30 | 1969-04-01 | 1969-10-01 | $7700.00 | Window Closed / Lapsed |