Patent US3075908A successfully refreshed from Google Patents.
US3075908A
Expired / Lapsed
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Method of treating liquids by electrodialysis at elevated temperatures
Assignee: Individual
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Filing: 1958-04-23
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Granted: 1963-01-29
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Expires: 1978-04-23
Abstract
No abstract record available.
Inventors
- 👤 Kollsman Paul
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 16:51
CPC Classifications
B; B01; B01D; B01D61/00; B01D61/42; B01D61/44; F; F16; F16H; F16H29/00; F16H29/02; F16H29/04; B01D2313/00; B01D2313/22; B01D2313/221
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
156 words
IN THE METHOD OF ELECTRODIALYTICALLY TREATING AN IONIC LIQUID BY SUBJECTING THE LIQUID TO ELECTRODIALYSIS IN A FIRST STAGE AND THEN IN A FURTHER STAGE OF AN APPARATUS COMPRISING, IN BOTH STAGES, A PLURALITY OF ALTERNATING CONCENTRATION COMPARTMENTS AND DILUTION COMPARTMENTS BETWEEN ELECTRODES FOR PASSING A DIRECT ELECTRIC CURRENT THROUGH THE COMPARTMENTS, THE COMPARTMENTS BEING SEPARATED BY MEMBRANES OF ION EXCHANGE MATERIAL, PAST WHICH MEMBRANES THE LIQUID FLOWS AND WITHDRAWS HEAT GENERATED IN IN SAID MEMBRANES BY THE ELECTRIC CURRENT, THE STEPS OF PREHEATING THE INFLUENT LIQUID OF THE FIRST STAGE IN A HEAT EXCHANGER; WITHDRAWING HEAT FROM THE CONCENTRATE EFFLUENT OF THE FIRST STAGE IN SAID EXCHANGER; PASSING THE DILUTE EFFLUENT OF THE FIRST STAGE THROUGHT THE DILUTING COMPARTMENTS OF SAID FURTHER STAGE SUBSTANTIALLY WITHOUT REMOVAL OF HEAT FROM THE DILYTE EFFLUENT OF SAID FIRST STAGE PRIOR TO ITS INTRODUCTION INTO SAID FURTHER STAGE; AND REINTRODUCING A PORTION OF THE DILUTE EFFLUENT OF SAID FURTHER
Claim 2
Dependent Claim
156 words
IN THE METHOD OF ELECTRODIALYTICALLY TREATING AN IONIC LIQUID BY SUBJECTING THE LIQUID TO ELECTRODIALYSIS IN A FIRST STAGE AND THEN IN A FURTHER STAGE OF AN APPARATUS COMPRISING, IN BOTH STAGES, A PLURALITY OF ALTERNATING CONCENTRATION COMPARTMENTS AND DILUTION COMPARTMENTS BETWEEN ELECTRODES FOR PASSING A DIRECT ELECTRIC CURRENT THROUGH THE COMPARTMENTS, THE COMPARTMENTS BEING SEPARATED BY MEMBRANES OF ION EXCHANGE MATERIAL, PAST WHICH MEMBRANES THE LIQUID FLOWS AND WITHDRAWS HEAT GENERATED IN IN SAID MEMBRANES BY THE ELECTRIC CURRENT, THE STEPS OF PREHEATING THE INFLUENT LIQUID OF THE FIRST STAGE IN A HEAT EXCHANGER; WITHDRAWING HEAT FROM THE CONCENTRATE EFFLUENT OF THE FIRST STAGE IN SAID EXCHANGER; PASSING THE DILUTE EFFLUENT OF THE FIRST STAGE THROUGHT THE DILUTING COMPARTMENTS OF SAID FURTHER STAGE SUBSTANTIALLY WITHOUT REMOVAL OF HEAT FROM THE DILYTE EFFLUENT OF SAID FIRST STAGE PRIOR TO ITS INTRODUCTION INTO SAID FURTHER STAGE; AND REINTRODUCING A PORTION OF THE DILUTE EFFLUENT OF SAID FURTHER
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) | 1966-01-28 | 1966-07-30 | 1967-01-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-01-28 | 1970-07-30 | 1971-01-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-01-28 | 1974-07-30 | 1975-01-29 | $7700.00 | Window Closed / Lapsed |