US3298932A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Distillation of a solute-solvent mixture in successively reduced pressure stages while in direct contact and concurrent flow with a heat transfer medium
Assignee: Lummus Technology LLC
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Filing: 1962-04-25
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Granted: 1967-01-17
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Expires: 1982-04-25
Abstract
No abstract record available.
Inventors
- 👤 William V Bauer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 07:01
CPC Classifications
C; C02; C02F; C02F1/00; C02F1/02; C02F1/04; B; B01; B01D; B01D1/00; B01D1/28; B01D1/2803; B01D1/2806; B01D1/2809; B01D1/284; B01D1/2856; C02F1/10; C02F1/16; Y; Y10; Y10S; Y10S203/00; Y10S203/11; Y10S203/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
113 words
A METHOD OF SEPARATING A SOLUTE-SOLVENT MIXTURE COMPRISING THE STEPS OF PASSING THE MIXTURE AND A HEATED LIQUID MEDIUM SUBSTANTIALLY INSOLUBLE IN THE SOLVENT IN CONTACTING RELATIONSHIP THROUGH A SERIES OF DISCRETE ZONES IN FLUID COMMUNICATION THEREBETWEEN OF SUCCESSIVELY DECREASING PRESSURES AND TEMPERATURES, VAPORIZING AT LEAST PART OF THE SOLVENT IN EACH OF SAID ZONES, SIMULTANEOUSLY HEATING SAID MEDIUM BY PASSING THE SAME THROUGH A SERIES OF DISCRETE ZONES IN FLUID COMMUNICATION THEREBETWEEN OF SUCCESSIVELY INCREASING PRESSURES AND TEMPERATURES, INTRODUCING A MAJOR PORTION OF THE VAPORS FORMED IN SAID FIRST MENTIONED SERIES INTO SAID LAST MENTIONED ZONES AND CONDENSING THE SAME THEREIN TO PROVIDE HEAT FOR SAID MEDIUM AND COLLECTING THE CONDENSED SOLVENT.
Claim 2
Independent Claim
113 words
A METHOD OF SEPARATING A SOLUTE-SOLVENT MIXTURE COMPRISING THE STEPS OF PASSING THE MIXTURE AND A HEATED LIQUID MEDIUM SUBSTANTIALLY INSOLUBLE IN THE SOLVENT IN CONTACTING RELATIONSHIP THROUGH A SERIES OF DISCRETE ZONES IN FLUID COMMUNICATION THEREBETWEEN OF SUCCESSIVELY DECREASING PRESSURES AND TEMPERATURES, VAPORIZING AT LEAST PART OF THE SOLVENT IN EACH OF SAID ZONES, SIMULTANEOUSLY HEATING SAID MEDIUM BY PASSING THE SAME THROUGH A SERIES OF DISCRETE ZONES IN FLUID COMMUNICATION THEREBETWEEN OF SUCCESSIVELY INCREASING PRESSURES AND TEMPERATURES, INTRODUCING A MAJOR PORTION OF THE VAPORS FORMED IN SAID FIRST MENTIONED SERIES INTO SAID LAST MENTIONED ZONES AND CONDENSING THE SAME THEREIN TO PROVIDE HEAT FOR SAID MEDIUM AND COLLECTING THE CONDENSED SOLVENT.
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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) | 1970-01-16 | 1970-07-18 | 1971-01-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-16 | 1974-07-18 | 1975-01-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-16 | 1978-07-18 | 1979-01-17 | $7700.00 | Window Closed / Lapsed |