US2743015A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for separating liquids by thermal diffusion
Assignee: Standard Oil Co
•
Filing: 1953-04-21
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Granted: 1956-04-24
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Expires: 1973-04-21
Abstract
No abstract record available.
Inventors
- 👤 John C Jansma
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 10:25
CPC Classifications
B; B01; B01D; B01D17/00; B01D17/005
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
96 words
APPARATUS FOR SEPARATING LIQUID MIXTURES INTO DISSIMILAR FRACTIONS BY THERMAL DIFFUSION WHICH COMPRISES AN INNER WALL MEMBER OF INERT, THERMALLY CONDUCTIVE MATERIAL HAVING A SMOOTH OUTER FACE DEFINED BY A FIRST SURFACE OF REVOLUTION ABOUT A HORIZONTAL REFERENCE AXIS; MEANS SUPPORTING SAID INNER WALL MEMBER FOR ROTATION ABOUT SAID AXIS, MEANS FOR ROTATING SAID INNER WALL MEMBER AROUND SAID AXIS, AN OUTER WALL MEMBER OF INERT, THERMALLY CONDUCTIVE MATERIAL HAVING A SMOOTH INNER FACE DEFINED BY A SECOND SURFACE OF REVOLUTION ABOUT SAID REFERENCE AXIS; SAID INNER AND OUTER FACES OF THE OUTER AND INNER WALL
Claim 2
Dependent Claim
96 words
APPARATUS FOR SEPARATING LIQUID MIXTURES INTO DISSIMILAR FRACTIONS BY THERMAL DIFFUSION WHICH COMPRISES AN INNER WALL MEMBER OF INERT, THERMALLY CONDUCTIVE MATERIAL HAVING A SMOOTH OUTER FACE DEFINED BY A FIRST SURFACE OF REVOLUTION ABOUT A HORIZONTAL REFERENCE AXIS; MEANS SUPPORTING SAID INNER WALL MEMBER FOR ROTATION ABOUT SAID AXIS, MEANS FOR ROTATING SAID INNER WALL MEMBER AROUND SAID AXIS, AN OUTER WALL MEMBER OF INERT, THERMALLY CONDUCTIVE MATERIAL HAVING A SMOOTH INNER FACE DEFINED BY A SECOND SURFACE OF REVOLUTION ABOUT SAID REFERENCE AXIS; SAID INNER AND OUTER FACES OF THE OUTER AND INNER WALL
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-04-24 | 1959-10-24 | 1960-04-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-04-24 | 1963-10-24 | 1964-04-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-04-24 | 1967-10-24 | 1968-04-24 | $7700.00 | Window Closed / Lapsed |