US2834464A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for continuous liquid thermal diffusion
Assignee: ExxonMobil Oil Corp
•
Filing: 1954-08-23
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Granted: 1958-05-13
•
Expires: 1974-08-23
Abstract
No abstract record available.
Inventors
- 👤 Albert T Fellows
- 👤 James R White
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 09:24
CPC Classifications
B; B01; B01D; B01D17/00; B01D17/005
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
85 words
IN A PROCESS FOR EFFECTING CONTINUOUS SEPARATION BY THERMAL DIFFUSION OF A MIXTURE HAVING UNLIKE COMPONENTS WHICH ARE LIQUID UNDER THE CONDITIONS OF SEPARATION WHEREIN SAID MIXTURE IS CONTINUOUSLY INTRODUCED INTO A SUBSTANTIALLY VERTICAL SLIT FORMED OF TWO SMOOTH SURFACES ACROSS WHICH IS MAINTAINED A TEMPERATURE GRADIENT AND WHEREIN A FRACTION CONTAINING A GREATER CONCENTRATION OF ONE OF SAID UNLIKE COMPONENTS THAN THE INITIAL MIXTURE IS CONTINUOUSLY REMOVED FROM ONE PART OF SAID SLIT AND A FRACTION CONTAINING A GREATER CONCENTRATION OF ANOTHER OF SAID
Claim 2
Dependent Claim
85 words
IN A PROCESS FOR EFFECTING CONTINUOUS SEPARATION BY THERMAL DIFFUSION OF A MIXTURE HAVING UNLIKE COMPONENTS WHICH ARE LIQUID UNDER THE CONDITIONS OF SEPARATION WHEREIN SAID MIXTURE IS CONTINUOUSLY INTRODUCED INTO A SUBSTANTIALLY VERTICAL SLIT FORMED OF TWO SMOOTH SURFACES ACROSS WHICH IS MAINTAINED A TEMPERATURE GRADIENT AND WHEREIN A FRACTION CONTAINING A GREATER CONCENTRATION OF ONE OF SAID UNLIKE COMPONENTS THAN THE INITIAL MIXTURE IS CONTINUOUSLY REMOVED FROM ONE PART OF SAID SLIT AND A FRACTION CONTAINING A GREATER CONCENTRATION OF ANOTHER OF SAID
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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) | 1961-05-12 | 1961-11-11 | 1962-05-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-05-12 | 1965-11-11 | 1966-05-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-05-12 | 1969-11-11 | 1970-05-13 | $7700.00 | Window Closed / Lapsed |