Patent US2733206A successfully refreshed from Google Patents.
US2733206A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Chemical treatment of flood waters
Assignee: —
•
Filing: —
•
Granted: 1956-01-31
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Expires: 1973-01-31
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 07:51
CPC Classifications
C; C09; C09K; C09K8/00; C09K8/60; C09K8/605; Y; Y10; Y10S; Y10S507/00; Y10S507/92; Y10S507/935; Y10S507/936
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
84 words
IN THE METHOD OF SECONDARY OIL RECOVERY CHARACTERIZED BY THE STEP OF INJECTING FLOODING WATER PRESSURE THROUGH SUBTERRANEAN PIPES INTO OIL-BEARING RESERVOIR ROCK FORMATIONS TO DISPLACE PORTIONS OF THE RESIDUAL OIL THEREIN TOWARD A PRODUCING WELL, THE IMPROVEMENT COMPRISING HAVING PRESENT IN SAID INJECTED FLOODING WATER A MINUTE PROPORTION OF DISCOCO DIMETHYL AMMONIUM CHLORIDE TO INHIBIT THE GROWTH OF BACTERIA WITHIN SAID FORMATIONS, TO PREVENT BOTH ACID AND ALKALINE CORROSION OF SAID PIPES, AND TO DECREASE THE INTERFACIAL TENSION BETWEEN THE OIL AND WATER.
Claim 2
Dependent Claim
84 words
IN THE METHOD OF SECONDARY OIL RECOVERY CHARACTERIZED BY THE STEP OF INJECTING FLOODING WATER PRESSURE THROUGH SUBTERRANEAN PIPES INTO OIL-BEARING RESERVOIR ROCK FORMATIONS TO DISPLACE PORTIONS OF THE RESIDUAL OIL THEREIN TOWARD A PRODUCING WELL, THE IMPROVEMENT COMPRISING HAVING PRESENT IN SAID INJECTED FLOODING WATER A MINUTE PROPORTION OF DISCOCO DIMETHYL AMMONIUM CHLORIDE TO INHIBIT THE GROWTH OF BACTERIA WITHIN SAID FORMATIONS, TO PREVENT BOTH ACID AND ALKALINE CORROSION OF SAID PIPES, AND TO DECREASE THE INTERFACIAL TENSION BETWEEN THE OIL AND WATER.
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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) | 1959-01-30 | 1959-08-01 | 1960-01-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-01-30 | 1963-08-01 | 1964-01-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-01-30 | 1967-08-01 | 1968-01-31 | $7700.00 | Window Closed / Lapsed |