US2923674A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the removal of dissolved solids from liquids
Assignee: Permutit Co Ltd
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Filing: 1959-02-02
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Granted: 1960-02-02
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Expires: 1979-02-02
Abstract
No abstract record available.
Inventors
- 👤 Kressman Theodore Roger Ernest
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 22:16
CPC Classifications
C; C02; C02F; C02F1/00; C02F1/46; C02F1/469; C02F1/4693; B; B01; B01D; B01D61/00; B01D61/42; B01D61/44; B01D61/46; B01D61/48; B01J; B01J47/00; B01J47/02; B01J47/06; B01J47/08; C02F1/42; C02F1/4604; C02F2201/00; C02F2201/46; C02F2201/461; C02F2201/46105; C02F2201/46115
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
93 words
A PROCESS FOR MOVING DISSOLVED IONICALLY DISSOCIATED SOLID FROM AN AQUEOUS SOLUTION WHICH COMPRISES SUBJECTING THE SOLUTION TO ELECTRODIALYSIS SUCCESSIVELY IN TWO COMPARTMENTS EACH LYING BETWEEN A CATHODE AND AN ANODE IN AN ELECTRODIALYTIC CELL AND EACH BOUNDED ON THE CATHODE SIDE BY A BARRIER SELECTIVELY PERMEABLE TO CATIONS AND ON THE ANODE SIDE BY A BARRIER SELECTIVELY PERMEABLE TO ANIONS, THE FIRST COMPARTMENT BEING FILLED WITH A CATION-EXCHANGE MATERIAL, THE SECOND COMPARTMENT BEING FILLED WITH AN ANION-EXCHANGE MATERIAL AND EACH COMPARTMENT LYING BETWEEN AND ADJACENT TO TWO OTHERS CONTAINING AN AQUEOUS ELECTROLYTE.
Claim 2
Dependent Claim
93 words
A PROCESS FOR MOVING DISSOLVED IONICALLY DISSOCIATED SOLID FROM AN AQUEOUS SOLUTION WHICH COMPRISES SUBJECTING THE SOLUTION TO ELECTRODIALYSIS SUCCESSIVELY IN TWO COMPARTMENTS EACH LYING BETWEEN A CATHODE AND AN ANODE IN AN ELECTRODIALYTIC CELL AND EACH BOUNDED ON THE CATHODE SIDE BY A BARRIER SELECTIVELY PERMEABLE TO CATIONS AND ON THE ANODE SIDE BY A BARRIER SELECTIVELY PERMEABLE TO ANIONS, THE FIRST COMPARTMENT BEING FILLED WITH A CATION-EXCHANGE MATERIAL, THE SECOND COMPARTMENT BEING FILLED WITH AN ANION-EXCHANGE MATERIAL AND EACH COMPARTMENT LYING BETWEEN AND ADJACENT TO TWO OTHERS CONTAINING AN AQUEOUS ELECTROLYTE.
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) | 1963-02-01 | 1963-08-03 | 1964-02-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-02-01 | 1967-08-03 | 1968-02-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-02-01 | 1971-08-03 | 1972-02-02 | $7700.00 | Window Closed / Lapsed |