US2520186A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for removing dissolved salts from the liquid solvent
Assignee: Individual
•
Filing: 1943-11-24
•
Granted: 1950-08-29
•
Expires: 1963-11-24
Abstract
No abstract record available.
Inventors
- 👤 Platen Baltzar Carl Von
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 02:10
CPC Classifications
C; C02; C02F; C02F1/00; C02F1/02; C02F1/04; Y; Y10; Y10S; Y10S159/00; Y10S159/24; Y10S203/00; Y10S203/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
134 words
IN THE SEPARATION OF SOLID, NON-VOLATILE SOLUTES FROM THEIR SOLUTIONS IN LIQUID SOLVENTS, THE PROCESS WHICH COMPRISES PASSING SUCH A SOLUTION INTO A SEPARATION ZONE MAINTAINED UNDER A PRESSURE EXCEEDING THE CRITICAL PRESSURE OF THE SOLVENT AND AT A TEMPERATURE EXCEEDING THE CRITICAL TEMPERATURE OF THE SOLVENT, RETAINING THE SOLUTION IN SAID ZONE UNTIL A SEPARATION HAS TAKEN PLACE WHEREIN A FRACTION RICH IN SOLVENT COLLECTS ABOVE A FRACTION RICH IN SOLUTE, SEPARATELY WITHDRAWING THE SOLVENT-RICH FRACTION AND THE SOLUTE-RICH FRACTION FROM SAID ZONE, PASSING SAID FRACTIONS SEPARATELY IN HEAT-CONDUCTING RELATIONSHIP WITH A MASS OF THE SOLUTION TO BE TREATED, MAINTAINING BOTH OF THE SAID FRACTIONS AND THE SOLUTION TO BE TREATED AT PRESSURES EXCEEDING THE CRITICAL PRESSURE OF THE SOLVENT DURING THE HEAT TRANSFER THEREBETWEEN AND SEPARATELY RECOVERING THE SOLUTE AND THE SOLVENT.
Claim 2
Dependent Claim
134 words
IN THE SEPARATION OF SOLID, NON-VOLATILE SOLUTES FROM THEIR SOLUTIONS IN LIQUID SOLVENTS, THE PROCESS WHICH COMPRISES PASSING SUCH A SOLUTION INTO A SEPARATION ZONE MAINTAINED UNDER A PRESSURE EXCEEDING THE CRITICAL PRESSURE OF THE SOLVENT AND AT A TEMPERATURE EXCEEDING THE CRITICAL TEMPERATURE OF THE SOLVENT, RETAINING THE SOLUTION IN SAID ZONE UNTIL A SEPARATION HAS TAKEN PLACE WHEREIN A FRACTION RICH IN SOLVENT COLLECTS ABOVE A FRACTION RICH IN SOLUTE, SEPARATELY WITHDRAWING THE SOLVENT-RICH FRACTION AND THE SOLUTE-RICH FRACTION FROM SAID ZONE, PASSING SAID FRACTIONS SEPARATELY IN HEAT-CONDUCTING RELATIONSHIP WITH A MASS OF THE SOLUTION TO BE TREATED, MAINTAINING BOTH OF THE SAID FRACTIONS AND THE SOLUTION TO BE TREATED AT PRESSURES EXCEEDING THE CRITICAL PRESSURE OF THE SOLVENT DURING THE HEAT TRANSFER THEREBETWEEN AND SEPARATELY RECOVERING THE SOLUTE AND THE SOLVENT.
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) | 1953-08-28 | 1954-02-27 | 1954-08-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-08-28 | 1958-02-27 | 1958-08-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-08-28 | 1962-02-27 | 1962-08-29 | $7700.00 | Window Closed / Lapsed |