US3685653A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for the separation of oil and water from an emulsion
Assignee: Texaco Inc
•
Filing: 1971-06-25
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Granted: 1972-08-22
•
Expires: 1991-06-25
Abstract
Abstract Facilitating and expediting separation of oil/water emulsions by passing the emulsion as a surface film on a rotating pick-up roller into a bight formed by a closely spaced parallel rollers to coalesce the oil particles, break the emulsion and liberate free oil.
Inventors
- 👤 Merle H Van Stavern
- 👤 Henry D Moorer
- 👤 Gordon H Miller
- 👤 Kenneth M Gunn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 11:57
CPC Classifications
B; B01; B01D; B01D17/00; B01D17/02; B01D17/0208; B01D17/0214; B01D17/04; B01D17/041; E; E02; E02B; E02B15/00; E02B15/04; E02B15/10; E02B15/103; Y; Y02; Y02A; Y02A20/00; Y02A20/20; Y02A20/204; Y10; Y10S; Y10S210/00; Y10S210/918; Y10S210/922; Y10S210/923
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
22 words
The method as called for in claim 1 wherein said roller spacing is within a range from about 1 to 4 mils.
References Cited (Backward Citations)
US1379176A
Cited
US1860819A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-08-22 | 1976-02-21 | 1976-08-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-22 | 1980-02-21 | 1980-08-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-22 | 1984-02-21 | 1984-08-22 | $7700.00 | Window Closed / Lapsed |