US2580651A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fractionation control
Assignee: Universal Oil Products Co
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Filing: 1949-05-11
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Granted: 1952-01-01
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Expires: 1969-05-11
Abstract
No abstract record available.
Inventors
- 👤 Jr David M Boyd
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 19:54
CPC Classifications
B; B01; B01D; B01D3/00; B01D3/42; B01D3/4211; B01D3/4255; Y; Y10; Y10S; Y10S203/00; Y10S203/19
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
124 words
IN THE FRACTIONATION OF A MIXED FEED STREAM WHEREIN AT LEAST OVERHEAD AND BOTTOM COMPONENTS ARE WITHDRAWN, THE METHOD OF OBTAINING A SUBSTANTIALLY UNIFORM TEMPERATURE AND COMPOSITION GRADIENT THROUGHOUT THE COLUMN, WHICH COMPRISES, MAINTAINING A PAIR OF TEMPERATURE INDICATING MEANS AT VERTICALLY SPACED POINTS ABOVE THE LEVEL OF INTRODUCING SAID MIXED FEED STREAM TO THE COLUMN, MAINTAINING A PAIR OF TEMPERATURE INDICATING MEANS AT VERTICALLY SPACED POINTS BELOW SAID FEED LEVEL TO THE COLUMN, MEASURING TEMPERATURE GRADIENT ABOVE AND BELOW SAID FEED LEVEL DIRECTLY FROM SAID INDICATING MEANS, MEASURING THE DIFFERENTIAL BETWEEN THE TEMPERATURE GRADIENT ABOVE THE FEED AND THE TEMPERATURE GRADIENT BELOW THE FEED LEVEL AND REGULATING THE HEAT DISTRIBUTION TO SAID COLUMN RESPONSIVE TO CHANGES IN THE DIFFERENTIAL BETWEEN SAID TEMPERATURE GRADIENTS.
Claim 2
Dependent Claim
124 words
IN THE FRACTIONATION OF A MIXED FEED STREAM WHEREIN AT LEAST OVERHEAD AND BOTTOM COMPONENTS ARE WITHDRAWN, THE METHOD OF OBTAINING A SUBSTANTIALLY UNIFORM TEMPERATURE AND COMPOSITION GRADIENT THROUGHOUT THE COLUMN, WHICH COMPRISES, MAINTAINING A PAIR OF TEMPERATURE INDICATING MEANS AT VERTICALLY SPACED POINTS ABOVE THE LEVEL OF INTRODUCING SAID MIXED FEED STREAM TO THE COLUMN, MAINTAINING A PAIR OF TEMPERATURE INDICATING MEANS AT VERTICALLY SPACED POINTS BELOW SAID FEED LEVEL TO THE COLUMN, MEASURING TEMPERATURE GRADIENT ABOVE AND BELOW SAID FEED LEVEL DIRECTLY FROM SAID INDICATING MEANS, MEASURING THE DIFFERENTIAL BETWEEN THE TEMPERATURE GRADIENT ABOVE THE FEED AND THE TEMPERATURE GRADIENT BELOW THE FEED LEVEL AND REGULATING THE HEAT DISTRIBUTION TO SAID COLUMN RESPONSIVE TO CHANGES IN THE DIFFERENTIAL BETWEEN SAID TEMPERATURE GRADIENTS.
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) | 1954-12-31 | 1955-07-02 | 1956-01-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-12-31 | 1959-07-02 | 1960-01-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-12-31 | 1963-07-02 | 1964-01-01 | $7700.00 | Window Closed / Lapsed |