Patent US3622876A successfully refreshed from Google Patents.
US3129146A
Expired / Lapsed
US
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Method and apparatus for separating solvents from solutions by distillation activated by pressure
Assignee: Individual
•
Filing: 1962-10-18
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Granted: 1964-04-14
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Expires: 1982-10-18
Abstract
No abstract record available.
Inventors
- 👤 Gerald L Hassler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:13
CPC Classifications
B; B01; B01D; B01D61/00; B01D61/36; B01D61/364; B01D61/3641; B01D63/00; B01D63/08; B01D63/082; B01D63/0821; B01D2319/00; B01D2319/02; B01D2319/025; Y; Y10; Y10S; Y10S159/00; Y10S159/27; Y10S203/00; Y10S203/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
183 words
A CELL FOR SEPARATING SOLVENT FROM SOLUTION BY DIFFUSION TRANSFER ACTIVATED BY PRESSURE COMPRISING: (A) AN ENCLOSED BODY OF SOLVENT; (B) AN ENCLOSED BODY OF SOLUTION CONTAINING SAID SOLVENT MAINTAINED UNDER A PRESSURE GREATER THAN THE PRESSURE ON SAID BODY OF SOLVENT, SAID SOLUTION PRESSURE BEING SUFFICIENT TO INCREASE THE VAPOR PRESSURE OF THE SOLVENT THEREIN ABOVE THE VAPOR PRESSURE OF SAID BODY OF SOLVENT; (C) A PAIR OF CLOSELY SPACED, THIN, PERMEAVLE SHEETS SEPARATING SAID BODY OF SOLVENT FROM SAID BODY OF SOLUTION, SAID SHEETS HAVING A NARROW GAP THEREBETWEEN; AND (D) A BODY OF FLUID ENCLOSED IN SAID GAP AT A PRESURE GREATER THAN THE PRESSURE ON SAID BODY OF SOLUTION BUT INSUFFICIENT TO RENDER SAID CELL INOPERATIVE, (1) SAID BODY OF FLUID BEING ADAPTED TO PERMIT THE FLOW OF SOLVENT VAPOR FROM SAID SOLUTION AND TO PREVENT THE FLOW OF SOLUTION FROM SAID BODY OF SOLUTION TO SAID BODY OF SOLVENT, AND (II) SAID SHEET PRODUCING SUFFICIENT CAPILLARY FORCES TO MAINTAIN SAID BODY OF FLUID IN SAID GAP AND THE PRESSURE DIFFERENCE BETWEEN SAID GAP AND SAID BODY OF SOLVENT.
Claim 2
Dependent Claim
183 words
A CELL FOR SEPARATING SOLVENT FROM SOLUTION BY DIFFUSION TRANSFER ACTIVATED BY PRESSURE COMPRISING: (A) AN ENCLOSED BODY OF SOLVENT; (B) AN ENCLOSED BODY OF SOLUTION CONTAINING SAID SOLVENT MAINTAINED UNDER A PRESSURE GREATER THAN THE PRESSURE ON SAID BODY OF SOLVENT, SAID SOLUTION PRESSURE BEING SUFFICIENT TO INCREASE THE VAPOR PRESSURE OF THE SOLVENT THEREIN ABOVE THE VAPOR PRESSURE OF SAID BODY OF SOLVENT; (C) A PAIR OF CLOSELY SPACED, THIN, PERMEAVLE SHEETS SEPARATING SAID BODY OF SOLVENT FROM SAID BODY OF SOLUTION, SAID SHEETS HAVING A NARROW GAP THEREBETWEEN; AND (D) A BODY OF FLUID ENCLOSED IN SAID GAP AT A PRESURE GREATER THAN THE PRESSURE ON SAID BODY OF SOLUTION BUT INSUFFICIENT TO RENDER SAID CELL INOPERATIVE, (1) SAID BODY OF FLUID BEING ADAPTED TO PERMIT THE FLOW OF SOLVENT VAPOR FROM SAID SOLUTION AND TO PREVENT THE FLOW OF SOLUTION FROM SAID BODY OF SOLUTION TO SAID BODY OF SOLVENT, AND (II) SAID SHEET PRODUCING SUFFICIENT CAPILLARY FORCES TO MAINTAIN SAID BODY OF FLUID IN SAID GAP AND THE PRESSURE DIFFERENCE BETWEEN SAID GAP AND SAID BODY OF SOLVENT.
References Cited (Backward Citations)
US1825631A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-04-14 | 1967-10-14 | 1968-04-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-04-14 | 1971-10-14 | 1972-04-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-04-14 | 1975-10-14 | 1976-04-14 | $7700.00 | Window Closed / Lapsed |