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US2959223A
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Method of facilitating production of oil or gas from a well penetrating a petroleum-bearing stratum contiguous to a water-bearing zone
Assignee: Dow Chemical Co
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Filing: 1955-03-25
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Granted: 1960-11-08
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Expires: 1975-03-25
Abstract
No abstract record available.
Inventors
- 👤 James A Harmon
- 👤 Sutherlin Jack
- 👤 Charles A Pitts
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 20:21
CPC Classifications
E; E21; E21B; E21B43/00; E21B43/25; E21B43/26; E21B43/261
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2734861A
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US1107979A
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US2146480A
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US2285302A
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US2379516A
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US2645291A
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US2596844A
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US2699213A
Cited
US2782857A
Cited
US2796131A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-11-08 | 1964-05-09 | 1964-11-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-11-08 | 1968-05-09 | 1968-11-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-11-08 | 1972-05-09 | 1972-11-08 | $7700.00 | Window Closed / Lapsed |