Patent US2534870A successfully refreshed from Google Patents.
US2534870A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Distillation
Assignee: Lummus Technology LLC
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Filing: 1947-07-30
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Granted: 1950-12-19
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Expires: 1967-07-30
Abstract
No abstract record available.
Inventors
- 👤 Wheaton W Kraft
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 11:01
CPC Classifications
B; B01; B01D; B01D3/00; B01D3/34; B01D3/38; C; C10; C10G; C10G7/00; Y; Y10; Y10S; Y10S203/00; Y10S203/11
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
119 words
A METHOD OF REMOVING HEAT FROM THE VAPORS IN A STEAM STRIPPED DISTILLATION COLUMN OPERATED UNDER A VACUM WHICH COMPRISES WITHDRAWING A PORTION OF THE LIQUID FROM THE COLUMN, COOLING SIAD LIQUID AND RETURNING A MAJOR PART OF THE COOLED LIQUID TO THE COLUMN IN DIRECT CONTACT WITH THE VAPORS IN SAID COLUMN WHEREBY THE HEAVIER COMPONENTS ARE SUBSTANTIALLY CONDENSED FROM SAID VAPORS, SUBCOOLING THE REMAINDER OF SAID COOLED VAPORS, SUBCOOLING THE REMAINDER OF SAID COOLED LIQUID, PASSING THE SUBCOOLED, LIQUID TO AN ABSORPTION ZONE IN DIRECT CONTACT WITH THE RESIDUAL VAPORS WHEREBY SUBSTANTIALLY ALL OF THE LIGHTER COMPONENTS ARE ABSORBED, WITHDRAWING A LIQUID OVERHEAD PRODUCT FORM SAID ABSORPTION ZONE AND THEREAFTER REMOVING SUBSTANTIALLY PRODUCT-FREE STEAM FROM SAID COLUMN.
Claim 2
Independent Claim
119 words
A METHOD OF REMOVING HEAT FROM THE VAPORS IN A STEAM STRIPPED DISTILLATION COLUMN OPERATED UNDER A VACUM WHICH COMPRISES WITHDRAWING A PORTION OF THE LIQUID FROM THE COLUMN, COOLING SIAD LIQUID AND RETURNING A MAJOR PART OF THE COOLED LIQUID TO THE COLUMN IN DIRECT CONTACT WITH THE VAPORS IN SAID COLUMN WHEREBY THE HEAVIER COMPONENTS ARE SUBSTANTIALLY CONDENSED FROM SAID VAPORS, SUBCOOLING THE REMAINDER OF SAID COOLED VAPORS, SUBCOOLING THE REMAINDER OF SAID COOLED LIQUID, PASSING THE SUBCOOLED, LIQUID TO AN ABSORPTION ZONE IN DIRECT CONTACT WITH THE RESIDUAL VAPORS WHEREBY SUBSTANTIALLY ALL OF THE LIGHTER COMPONENTS ARE ABSORBED, WITHDRAWING A LIQUID OVERHEAD PRODUCT FORM SAID ABSORPTION ZONE AND THEREAFTER REMOVING SUBSTANTIALLY PRODUCT-FREE STEAM FROM SAID COLUMN.
References Cited (Backward Citations)
US1456419A
Cited
US1851550A
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US1912136A
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US2125325A
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US1991792A
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US2224986A
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US2377736A
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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) | 1953-12-18 | 1954-06-19 | 1954-12-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-12-18 | 1958-06-19 | 1958-12-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-12-18 | 1962-06-19 | 1962-12-19 | $7700.00 | Window Closed / Lapsed |