US3691072A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Soluble oil composition
Assignee: Union Oil Company of California
•
Filing: 1969-12-31
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Granted: 1972-09-12
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Expires: 1989-12-31
Abstract
Abstract A SOLUBLE OIL COMPOSITION COMPRISING A MIXTURE OF LIQUID HYDROCARBON, SURFACE ACTIVE AGENT AND SECONDARY BUTYL ALCOHOL IS DISCLOSED. THE COMPOSITION IS PARTICULARLY USEFUL AS A DISPLACEMENT FLUID IN A FLOODING PROCESS FOR THE RECOVERY OF OIL. THE SOLUBLE OIL COMPOSITION CAN BE SUBSTANTIALLY ANHYDROUS, OR IT CAN CONTAIN WATER PRESENT AS A WATER-IN-OIL MICROMULSION.
Inventors
- 👤 Le Roy W Holm
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 12:05
CPC Classifications
C; C09; C09K; C09K8/00; C09K8/58; C09K8/584; Y; Y10; Y10S; Y10S507/00; Y10S507/935; Y10S507/936; Y10S507/937; Y10S507/938
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-09-12 | 1976-03-13 | 1976-09-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-09-12 | 1980-03-13 | 1980-09-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-09-12 | 1984-03-13 | 1984-09-12 | $7700.00 | Window Closed / Lapsed |