US2987475A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Inhibiting growth of bacteria in water flooding process
Assignee: Shell USA Inc
•
Filing: 1958-05-26
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Granted: 1961-06-06
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Expires: 1978-05-26
Abstract
No abstract record available.
Inventors
- 👤 Legator Marvin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 20:47
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
41 words
THE METHOD OF INHIBITING GROWTH OF SULFATE-REDUCING BACTERIA IN WATER EMPLOYED FOR FLOODING AN OIL-BEARING FORMATION TO EFFECT OIL RECOVERY THEREFROM, COMPRISING THE STEP OF INTRODUCING INTO SAID BACTERIA-CONTAINING WATER A BACTERICIDAL QUANTITY OF A COMPOUND HAVING THE GENERAL STRUCTURAL FORMULA:
Claim 2
Independent Claim
41 words
THE METHOD OF INHIBITING GROWTH OF SULFATE-REDUCING BACTERIA IN WATER EMPLOYED FOR FLOODING AN OIL-BEARING FORMATION TO EFFECT OIL RECOVERY THEREFROM, COMPRISING THE STEP OF INTRODUCING INTO SAID BACTERIA-CONTAINING WATER A BACTERICIDAL QUANTITY OF A COMPOUND HAVING THE GENERAL STRUCTURAL FORMULA:
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) | 1964-06-05 | 1964-12-05 | 1965-06-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-06-05 | 1968-12-05 | 1969-06-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-06-05 | 1972-12-05 | 1973-06-06 | $7700.00 | Window Closed / Lapsed |