US2541070A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of separating dissimilar components in petroleum products by liquid thermal diffusion
Assignee: Standard Oil Co
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Filing: 1947-07-11
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Granted: 1951-02-13
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Expires: 1967-07-11
Abstract
No abstract record available.
Inventors
- 👤 Jones Arthur Letcher
- 👤 Everett C Hughes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 19:36
CPC Classifications
B; B01; B01D; B01D17/00; B01D17/005; Y; Y10; Y10S; Y10S585/00; Y10S585/909; Y10S585/911
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
185 words
A CONTINUOUS LIQUID THERMAL DIFFUSION METHOD FOR SEPARATING A PETROLEUM PRODUCT THAT IS LIQUID UNDER THE CONDITIONS OF SEPARATION AND WHICH COMPRISES TWO DISSIMILAR COMPONENTS THAT ARE LIQUID UNDER THE CONDITIONS OF SEPARATION, WHICH COMPRISES CONTINUOUSLY INTRODUCING SAID LIQUID PETROLEUM PRODUCT INTO A SUBSTANTIALLY VERTICAL SLIT HAVING A WIDTH OF 0.02 TO 0.06 INCH WHICH IS FORMED BY TWO SMOOTH SURFACES PROVIDING A TEMPERATURE GRADIENT ACROSS SAID SLIT BY MAINTAINING ONE OF SAID SURFACES AT A HIGHER TEMPERATURE THAN THE OTHER, AND CONTINUOUSLY WITHDRAWING FROM ONE PART OF SAID SLIT A FRACTION CONTAINING A GREATER CONCENTRATION OF ONE OF SAID DISSIMILAR COMPONENTS AND CONTINUOUSLY WITHDRAWING FROM ANOTHER PART OF SAID SLIT A SECOND FRACTION CONTAINING A GREATER CONCENTRATION OF ANOTHER OF SAID DISSIMILAR COMPONENTS, THE RATE OF WITHDRAWAL BEING REGULATED IN RELATION TO THE HEIGHT OF SAID SLIT AND THE TEMPERATURE GRADIENT ACROSS IT TO OBTAIN THE DESIRED SEPARATION OF THE DISSIMILAR COMPONENTS AND ALSO IN RELATION TO THE VISCOSITY OF THE LIQUID PETROLEUM PRODUCT AT THE TEMPERATURE IN SAID SLIT SO AS TO MAINTAIN A SUBSTANTIALLY NON-TURBULENT FLOW OF THE LIQUID IN THE SLIT.
Claim 2
Dependent Claim
185 words
A CONTINUOUS LIQUID THERMAL DIFFUSION METHOD FOR SEPARATING A PETROLEUM PRODUCT THAT IS LIQUID UNDER THE CONDITIONS OF SEPARATION AND WHICH COMPRISES TWO DISSIMILAR COMPONENTS THAT ARE LIQUID UNDER THE CONDITIONS OF SEPARATION, WHICH COMPRISES CONTINUOUSLY INTRODUCING SAID LIQUID PETROLEUM PRODUCT INTO A SUBSTANTIALLY VERTICAL SLIT HAVING A WIDTH OF 0.02 TO 0.06 INCH WHICH IS FORMED BY TWO SMOOTH SURFACES PROVIDING A TEMPERATURE GRADIENT ACROSS SAID SLIT BY MAINTAINING ONE OF SAID SURFACES AT A HIGHER TEMPERATURE THAN THE OTHER, AND CONTINUOUSLY WITHDRAWING FROM ONE PART OF SAID SLIT A FRACTION CONTAINING A GREATER CONCENTRATION OF ONE OF SAID DISSIMILAR COMPONENTS AND CONTINUOUSLY WITHDRAWING FROM ANOTHER PART OF SAID SLIT A SECOND FRACTION CONTAINING A GREATER CONCENTRATION OF ANOTHER OF SAID DISSIMILAR COMPONENTS, THE RATE OF WITHDRAWAL BEING REGULATED IN RELATION TO THE HEIGHT OF SAID SLIT AND THE TEMPERATURE GRADIENT ACROSS IT TO OBTAIN THE DESIRED SEPARATION OF THE DISSIMILAR COMPONENTS AND ALSO IN RELATION TO THE VISCOSITY OF THE LIQUID PETROLEUM PRODUCT AT THE TEMPERATURE IN SAID SLIT SO AS TO MAINTAIN A SUBSTANTIALLY NON-TURBULENT FLOW OF THE LIQUID IN THE SLIT.
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) | 1954-02-12 | 1954-08-14 | 1955-02-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-02-12 | 1958-08-14 | 1959-02-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-02-12 | 1962-08-14 | 1963-02-13 | $7700.00 | Window Closed / Lapsed |