US2660550A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Secondary recovery of petroleum oil by desulfovibrio
Assignee: ExxonMobil Oil Corp
•
Filing: 1949-08-27
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Granted: 1953-11-24
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Expires: 1969-08-27
Abstract
No abstract record available.
Inventors
- 👤 David M Updegraff
- 👤 Gloria B Wren
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:35
CPC Classifications
C; C09; C09K; C09K8/00; C09K8/60; C09K8/84; C09K8/86; C09K8/88; C09K8/90; C09K8/905; C12; C12P; C12P33/00; Y; Y10; Y10S; Y10S435/00; Y10S435/8215; Y10S435/822; Y10S435/909
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
59 words
IN THE METHOD FOR THE RECOVERY OF PETROLEUM OIL FROM AN OIL-BEARING EARTH FORMATION BY THE INJECTION OF WATER THROUGH AN INPUT WELL TO SAID FORMATION, THE IMPROVEMENT COMPRISING ADMIXING WITH SAID WATER PRIOR TO INJECTION TO SAID FORMATION A CULTURE OF BACTERIA OF THE HYDROCARBON-OXIDIZING SPECIES OF THE GENUS DESULFOVIBRIO AND A NUTRIENT FOR SAID BACTERIA COMPRISING MOLASSES.
Claim 2
Dependent Claim
59 words
IN THE METHOD FOR THE RECOVERY OF PETROLEUM OIL FROM AN OIL-BEARING EARTH FORMATION BY THE INJECTION OF WATER THROUGH AN INPUT WELL TO SAID FORMATION, THE IMPROVEMENT COMPRISING ADMIXING WITH SAID WATER PRIOR TO INJECTION TO SAID FORMATION A CULTURE OF BACTERIA OF THE HYDROCARBON-OXIDIZING SPECIES OF THE GENUS DESULFOVIBRIO AND A NUTRIENT FOR SAID BACTERIA COMPRISING MOLASSES.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-11-23 | 1957-05-25 | 1957-11-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-11-23 | 1961-05-25 | 1961-11-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-11-23 | 1965-05-25 | 1965-11-24 | $7700.00 | Window Closed / Lapsed |