Patent US2614635A successfully refreshed from Google Patents.
US2614635A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preventing water encroachment in oil wells
Assignee: Standard Oil Development Co
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Filing: 1946-04-04
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Granted: 1952-10-21
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Expires: 1966-04-04
Abstract
No abstract record available.
Inventors
- 👤 Philip S Williams
- 👤 Henry J Welge
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 08:14
CPC Classifications
C; C09; C09K; C09K8/00; C09K8/60; C09K8/82
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
35 words
A METHOD OF IMPROVING OIL PRODUCTION FROM A SUBTERRANEAN FORMATION PENETRATED BY A BORE HOLE WHICH COMPRISES FORCING INTO THE FORMATION A LIQUID SILICON POLYMER PRE-HEATED TO A TEMPERATURE OF AT LEAST ABOUT 500* F.
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) | 1955-10-21 | 1956-04-21 | 1956-10-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-10-21 | 1960-04-21 | 1960-10-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-10-21 | 1964-04-21 | 1964-10-21 | $7700.00 | Window Closed / Lapsed |