US3054749A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the control of bacteria in water flooding operations in secondary oil recovery
Assignee: Commercial Solvents Corp
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Filing: 1960-06-10
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Granted: 1962-09-18
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Expires: 1980-06-10
Abstract
No abstract record available.
Inventors
- 👤 Edward O Bennett
- 👤 Edward B Hodge
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 07:35
CPC Classifications
C; C09; C09K; C09K8/00; C09K8/60; C09K8/605; Y; Y10; Y10S; Y10S507/00; Y10S507/92
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
51 words
IN THE PROCESS OF SECONDARY OIL RECOVERY CHARACTERIZED BY THE STEP OF INJECTING FLOODING WATER INTO OIL-BEARING SUBTERRANEAN FORMATIONS TO DISPLACE PORTIONS OF THE RESIDUAL OIL THEREIN, THE IMPROVEMENT COMPRISING HAVING PRESENT IN SAID INJECTED FLOODING WATER IN EXCESS OF ABOUT 10-25 P.P.M. OF A NITROAMINE HAVING THE FOLLOWING STRUCTURAL FORMULA:
Claim 2
Dependent Claim
51 words
IN THE PROCESS OF SECONDARY OIL RECOVERY CHARACTERIZED BY THE STEP OF INJECTING FLOODING WATER INTO OIL-BEARING SUBTERRANEAN FORMATIONS TO DISPLACE PORTIONS OF THE RESIDUAL OIL THEREIN, THE IMPROVEMENT COMPRISING HAVING PRESENT IN SAID INJECTED FLOODING WATER IN EXCESS OF ABOUT 10-25 P.P.M. OF A NITROAMINE HAVING THE FOLLOWING STRUCTURAL FORMULA:
References Cited (Backward Citations)
US2419506A
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US2692231A
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US2839467A
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US2917428A
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US2843545A
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US2867279A
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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) | 1965-09-17 | 1966-03-19 | 1966-09-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-09-17 | 1970-03-19 | 1970-09-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-09-17 | 1974-03-19 | 1974-09-18 | $7700.00 | Window Closed / Lapsed |