Patent US2863813A successfully refreshed from Google Patents.
US2863813A
Expired / Lapsed
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Method of electrodialyzing aqueous solutions
Assignee: Veolia WTS Systems USA Inc
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Filing: 1956-09-14
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Granted: 1958-12-09
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Expires: 1976-09-14
Abstract
No abstract record available.
Inventors
- 👤 Juda Walter
- 👤 Wayne A Mcrae
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 23:34
CPC Classifications
C; C02; C02F; C02F1/00; C02F1/46; C02F1/469; B; B01; B01D; B01D61/00; B01D61/42; B01D61/44; B01D61/52; C02F1/4604; C02F1/4693; C02F2201/00; C02F2201/46; C02F2201/461; C02F2201/46105; C02F2201/4611; C02F2201/46115; C02F2201/4612; C02F2201/46125; C02F2201/4613
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
105 words
THE METHOD OF DEMINERALIZING AQUEOUS SOLUTIONS CONTAINING RELATIVELY MINOR COMPONENTS OF ELECTROLYTES TO BE REMOVED THEREFROM COMPRISING: THE STEPS OF PASSING A FIRST AQUEOUS SOLUTION THROUGH THE DILUTE CHAMBERS OF A MULTICHAMBER ELECTRIC MEMBRANE DEMINERALIZER HAVING A PLURALITY OF ALTERNATING CONCENTRATING AND DILUTING CHAMBERS BETWEEN TWO END ELECTRODE CHAMBERS, SAID CONCENTRATING AND DILUTING CHAMBERS BEING FREE OF ELECTRODES, ALL OF SAID CHAMBERS BEING DEFINED BETWEEN ALTERNATE ANION AND CATION PERMSELECTIVE MEMBRANES, PASSING A SECOND AQUEOUS ELECTROLYTE SOLUTION THROUGH THE CONCENTRATING CHAMBERS OF SAID DEMINEERALIZER, PASSING A THIRD ELECTROLYTE SOLUTION THROUGH THE END ELECTRODE CHAMBERS, PASSING A DIRECT ELECTRIC CURRENT IN SERIES ACROSS THE ALTERNATING CONCENTRATING
Claim 2
Independent Claim
105 words
THE METHOD OF DEMINERALIZING AQUEOUS SOLUTIONS CONTAINING RELATIVELY MINOR COMPONENTS OF ELECTROLYTES TO BE REMOVED THEREFROM COMPRISING: THE STEPS OF PASSING A FIRST AQUEOUS SOLUTION THROUGH THE DILUTE CHAMBERS OF A MULTICHAMBER ELECTRIC MEMBRANE DEMINERALIZER HAVING A PLURALITY OF ALTERNATING CONCENTRATING AND DILUTING CHAMBERS BETWEEN TWO END ELECTRODE CHAMBERS, SAID CONCENTRATING AND DILUTING CHAMBERS BEING FREE OF ELECTRODES, ALL OF SAID CHAMBERS BEING DEFINED BETWEEN ALTERNATE ANION AND CATION PERMSELECTIVE MEMBRANES, PASSING A SECOND AQUEOUS ELECTROLYTE SOLUTION THROUGH THE CONCENTRATING CHAMBERS OF SAID DEMINEERALIZER, PASSING A THIRD ELECTROLYTE SOLUTION THROUGH THE END ELECTRODE CHAMBERS, PASSING A DIRECT ELECTRIC CURRENT IN SERIES ACROSS THE ALTERNATING CONCENTRATING
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) | 1961-12-08 | 1962-06-09 | 1962-12-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-12-08 | 1966-06-09 | 1966-12-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-12-08 | 1970-06-09 | 1970-12-09 | $7700.00 | Window Closed / Lapsed |