US2937126A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrodialysis demineralization
Assignee: Veolia WTS Systems USA Inc
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Filing: 1957-08-13
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Granted: 1960-05-17
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Expires: 1977-08-13
Abstract
No abstract record available.
Inventors
- 👤 Norman W Rosenberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 12:27
CPC Classifications
B; B01; B01D; B01D61/00; B01D61/42; B01D61/44; B01D61/46; B01D61/50
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
126 words
THE METHOD OF MODIFYING THE CONCENTRATION OF AN ELECTROLYTE SOLUTION COMPRISING PASSING A FIRST FEED STREAM FROM A COMMON MANIFOLD THROUGH THE DILUTING CHAMBERS OF AN ELECTRODIALYSIS UNIT HAVING A PLURALITY OF DILUTING AND CONCENTRATING CHAMBERS DEFINED BETWEEN ION-SELECTIVE MEMBRANES AND TWO END ELECTRODE CHAMBERS LIKEWISE SEPARATED FROM THEIR ADJACENT CHAMBERS BY ION-SELECTIVE MEMBRANES, PASSING A SECOND FEED STREAM IN PARALLEL CONCURRENT FLOW FROM A SEPARATE COMMON MANIFOLD THROUGH THE CONCENTRATING CHAMBERS, PASSING ELECTROLYTES THROUGH BOTH ELECTRODE CHAMBERS, AT LEAST ONE OF WHICH ELECTROYLTES IS A PORTION OF THE EFFLUENT FROM THE CONCENTRATING CHAMBERS, RECIRCULATING A LEAST A PORTION OF THE REMAINING EFFLUENT FROM THE CONCENTRATE CHAMBERS BACK TO THE INFLUENT OF THE CONCENTRATE CHAMBERS, AND PASSING A DIRECT ELECTRIC CURRENT THROUGH SAID CHAMBERS AND MEMBRANES.
Claim 2
Independent Claim
126 words
THE METHOD OF MODIFYING THE CONCENTRATION OF AN ELECTROLYTE SOLUTION COMPRISING PASSING A FIRST FEED STREAM FROM A COMMON MANIFOLD THROUGH THE DILUTING CHAMBERS OF AN ELECTRODIALYSIS UNIT HAVING A PLURALITY OF DILUTING AND CONCENTRATING CHAMBERS DEFINED BETWEEN ION-SELECTIVE MEMBRANES AND TWO END ELECTRODE CHAMBERS LIKEWISE SEPARATED FROM THEIR ADJACENT CHAMBERS BY ION-SELECTIVE MEMBRANES, PASSING A SECOND FEED STREAM IN PARALLEL CONCURRENT FLOW FROM A SEPARATE COMMON MANIFOLD THROUGH THE CONCENTRATING CHAMBERS, PASSING ELECTROLYTES THROUGH BOTH ELECTRODE CHAMBERS, AT LEAST ONE OF WHICH ELECTROYLTES IS A PORTION OF THE EFFLUENT FROM THE CONCENTRATING CHAMBERS, RECIRCULATING A LEAST A PORTION OF THE REMAINING EFFLUENT FROM THE CONCENTRATE CHAMBERS BACK TO THE INFLUENT OF THE CONCENTRATE CHAMBERS, AND PASSING A DIRECT ELECTRIC CURRENT THROUGH SAID CHAMBERS AND MEMBRANES.
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) | 1963-05-17 | 1963-11-16 | 1964-05-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-05-17 | 1967-11-16 | 1968-05-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-05-17 | 1971-11-16 | 1972-05-17 | $7700.00 | Window Closed / Lapsed |