US2920041A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Waterflooding method of secondary recovery
Assignee: Jersey Production Research Co
•
Filing: 1957-07-31
•
Granted: 1960-01-05
•
Expires: 1977-07-31
Abstract
No abstract record available.
Inventors
- 👤 Victor G Meadors
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 17:19
CPC Classifications
C; C09; C09K; C09K8/00; C09K8/58; Y; Y10; Y10S; Y10S507/00; Y10S507/935; Y10S507/936
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
37 words
IN A WATERFLOODING PROCESS FOR RECOVERING OIL FROM A SUBTERRANEAN OIL RESERVOIR, THE IMPROVEMENT WHICH COMPRISES INCORPORATING AT LEAST ABOUT 10 WEIGHT PERCENT OF A SOLUBLE SODIUM SILICATE WITHIN AT LEAST THE LEADING PORTION OF THE WATERFLOOD.
Claim 2
Dependent Claim
37 words
IN A WATERFLOODING PROCESS FOR RECOVERING OIL FROM A SUBTERRANEAN OIL RESERVOIR, THE IMPROVEMENT WHICH COMPRISES INCORPORATING AT LEAST ABOUT 10 WEIGHT PERCENT OF A SOLUBLE SODIUM SILICATE WITHIN AT LEAST THE LEADING PORTION OF THE WATERFLOOD.
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) | 1963-01-04 | 1963-07-06 | 1964-01-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-01-04 | 1967-07-06 | 1968-01-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-01-04 | 1971-07-06 | 1972-01-05 | $7700.00 | Window Closed / Lapsed |