Patent US3391736A successfully refreshed from Google Patents.
US3391736A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid flow in a permeable earth formation
Assignee: Mobil Oil AS
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Filing: 1964-03-16
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Granted: 1968-07-09
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Expires: 1984-03-16
Abstract
No abstract record available.
Inventors
- 👤 Milton K Abdo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 17:33
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
51 words
IN A METHOD FOR THE RECOVERY OF OIL FROM AN OILCONTAINING SUBTERRANEAN FORMATION BY INJECTING A FLOODING LIQUID THROUGH AN INJECTION WELL INTO SAID FORMATION AND PORDUCING OIL FROM SAID FORMATION THROUGH A PRODUCTION WELL, THE IMPROVEMENT COMPRISING INJECTING INTO SAID FORMATION AN AQUEOUS POSITIVE NONSIMPLE LIQUID AS SAID FLOODING LIQUID.
Claim 2
Dependent Claim
51 words
IN A METHOD FOR THE RECOVERY OF OIL FROM AN OILCONTAINING SUBTERRANEAN FORMATION BY INJECTING A FLOODING LIQUID THROUGH AN INJECTION WELL INTO SAID FORMATION AND PORDUCING OIL FROM SAID FORMATION THROUGH A PRODUCTION WELL, THE IMPROVEMENT COMPRISING INJECTING INTO SAID FORMATION AN AQUEOUS POSITIVE NONSIMPLE LIQUID AS SAID FLOODING LIQUID.
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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) | 1971-07-09 | 1972-01-08 | 1972-07-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-07-09 | 1976-01-08 | 1976-07-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-07-09 | 1980-01-08 | 1980-07-09 | $7700.00 | Window Closed / Lapsed |