US2748080A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Secondary recovery of petroleum by water flooding
Assignee: Cities Service Research and Development Co
•
Filing: 1953-03-02
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Granted: 1956-05-29
•
Expires: 1973-03-02
Abstract
No abstract record available.
Inventors
- 👤 Newcombe Jack
- 👤 Jerry D Doane
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 04:04
CPC Classifications
C; C09; C09K; C09K8/00; C09K8/58; C09K8/584; Y; Y10; Y10S; Y10S507/00; Y10S507/935; Y10S507/936
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
44 words
THE PROCESS OF RECOVERING OIL FROM OIL RESERVOIRS WHICH CONSISTS IN FLOODING THE RESERVOIR WITH AN AQUEOUS LIQUID COMPRISING FROM ABOUT 40 TO ABOUT 125 PARTS PER MILLION OF A NON-IONIC SULFACTANT AND FROM ABOUT 100 TO ABOUT 1000 PARTS PER MILLION OF BORAX.
Claim 2
Dependent Claim
44 words
THE PROCESS OF RECOVERING OIL FROM OIL RESERVOIRS WHICH CONSISTS IN FLOODING THE RESERVOIR WITH AN AQUEOUS LIQUID COMPRISING FROM ABOUT 40 TO ABOUT 125 PARTS PER MILLION OF A NON-IONIC SULFACTANT AND FROM ABOUT 100 TO ABOUT 1000 PARTS PER MILLION OF BORAX.
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) | 1959-05-29 | 1959-11-28 | 1960-05-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-05-29 | 1963-11-28 | 1964-05-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-05-29 | 1967-11-28 | 1968-05-29 | $7700.00 | Window Closed / Lapsed |