US3079337A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reaction products of ethylene oxide and polyhydroxide alcohols as water viscosity thickeners for secondary recovery
Assignee: Jersey Production Research Co
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Filing: 1960-03-28
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Granted: 1963-02-26
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Expires: 1980-03-28
Abstract
No abstract record available.
Inventors
- 👤 Albin F Turbak
- 👤 George T Davis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 14:44
CPC Classifications
C; C09; C09K; C09K8/00; C09K8/58; C09K8/588; Y; Y10; Y10S; Y10S507/00; Y10S507/935; Y10S507/936
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
64 words
IN A METHOD OF RECOVERING OIL FROM OIL BEARING FORMATIONS, THE STEP OF FLOODING THE OIL BEING FORMATION WITH WATER CONTAINING AS A VISCOSITY IMPROVING AGENT FROM ABOUT 0.1 TO 1 PERCENT BY WEIGHT OF A BRANCHED CHAIN POLYMERIC ETHER OBTAINED BY REACTING ETHYLENE OXIDE WITH A POLYHYDRIC ALCOHOL, SAID POLYMERIC ETHER HAVING A MOLECULAR WEIGHT IN THE RANGE FROM ABOUT 100,000 TO 3,000,000.
Claim 2
Dependent Claim
64 words
IN A METHOD OF RECOVERING OIL FROM OIL BEARING FORMATIONS, THE STEP OF FLOODING THE OIL BEING FORMATION WITH WATER CONTAINING AS A VISCOSITY IMPROVING AGENT FROM ABOUT 0.1 TO 1 PERCENT BY WEIGHT OF A BRANCHED CHAIN POLYMERIC ETHER OBTAINED BY REACTING ETHYLENE OXIDE WITH A POLYHYDRIC ALCOHOL, SAID POLYMERIC ETHER HAVING A MOLECULAR WEIGHT IN THE RANGE FROM ABOUT 100,000 TO 3,000,000.
References Cited (Backward Citations)
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US2341500A
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US2587501A
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US2731414A
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US2842492A
Cited
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Cited
US2827964A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-02-25 | 1966-08-27 | 1967-02-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-02-25 | 1970-08-27 | 1971-02-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-02-25 | 1974-08-27 | 1975-02-26 | $7700.00 | Window Closed / Lapsed |