Patent US2668756A successfully refreshed from Google Patents.
US2668756A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of and apparatus for liquid-liquid contacting
Assignee: Phillips Petroleum Co
•
Filing: 1948-09-27
•
Granted: 1954-02-09
•
Expires: 1968-09-27
Abstract
No abstract record available.
Inventors
- 👤 Samuel C Carney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 21:24
CPC Classifications
B; B01; B01D; B01D11/00; B01D11/04; B01D11/0426; B01D11/0434
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
87 words
IN THE ART OF LIQUID-LIQUID CONTACTING, THE STEPS WHICH COMPRISE EFFECTING COUNTERCURRENT FLOW OF A LIGHT LIQUID AND A HEAVY LIQUID THROUGH A MIXING ZONE, CENTRIFUGING THE LIQUIDS AS THEY PASS THROUGH THE MIXING ZONE TO ESTABLISH AN INTERFACE BETWEEN THE LIGHT AND HEAVY LIQUIDS, AND CONTINUOUSLY PASSING A FILM OF ONE LIQUID AT HIGHT VELOCITY FROM A REGION WITHIN THE BODY OF SAID ONE LIQUID SPACED FROM THE INTERFACE THROUGH THE INTERFACE INTO A REGION OF THE BODY OF THE OTHER LIQUID SPACED FROM SAID INTERFACE.
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) | 1957-02-08 | 1957-08-10 | 1958-02-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-02-08 | 1961-08-10 | 1962-02-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-02-08 | 1965-08-10 | 1966-02-09 | $7700.00 | Window Closed / Lapsed |