US3043768A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrodialysis apparatus with reversal of polarity
Assignee: Bronswerk NV
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Filing: 1960-04-05
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Granted: 1962-07-10
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Expires: 1980-04-05
Abstract
No abstract record available.
Inventors
- 👤 Olie Jacob Ruurd
- 👤 Peter Johan Van Winsen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:39
CPC Classifications
B; B01; B01D; B01D61/00; B01D61/42; B01D61/44; B01D61/52
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
149 words
AN IMPROVED ELECTRODIALYTIC MULTI-COMPARTMENT APPARATUS COMPRISING A PLURALITY OF ION-PERMEABLE MEMBRANES ALTERNATING WITH FLEXIBLE FRAMES TO FORM A MEMBRANE STACK COMPRISING A PLURALITY OF NARROW COMPARTMENTS BOUNDED ON THEIR OPPOSITE MAJOR FACES BY SAID MEMBRANES AND AROUND THEIR PERIPHERIES BY SAID FLEXIBLE FRAMES; MANIFOLD CHANNELS LEADING THROUGH SERIES OF REGISTERING HOLES IN THE MEMBRANES TO CONSTITUTE CONTINUOUS PASSAGES FOR THE SUPPLY AND DISCHARGE OF LIQUIDS TO THE COMPARTMENTS; ELELCTRODES FOR THE PASSAGE OF CURRENT THROUGH THE MEMBRANE STACK; END PLATES AT BOTH ENDS OF THE STACK HAVING ELECTRODES; MEANS CLAMPING THE UNIT TOGETHER IN A LIQUID-TIGHT MANNER, THE IMPROVEMENTS CONSISTING IN THAT ALL THE LIQUID CONNECTION PIPES FOR EFFLUENT AND INFLUENT LIQUIDS AS WELL AS THE ELECTRIC CONNECTION LEADS TO THE ELECTRODES ARE MOUNTED SO AS TO LEAD THROUGH ONE OF THE TWO END PLATES AND THROUGH A CONNECTION PLATE ADJOINING THE SAID ONE END PLATE, MEANS FOR DE-
Claim 2
Dependent Claim
149 words
AN IMPROVED ELECTRODIALYTIC MULTI-COMPARTMENT APPARATUS COMPRISING A PLURALITY OF ION-PERMEABLE MEMBRANES ALTERNATING WITH FLEXIBLE FRAMES TO FORM A MEMBRANE STACK COMPRISING A PLURALITY OF NARROW COMPARTMENTS BOUNDED ON THEIR OPPOSITE MAJOR FACES BY SAID MEMBRANES AND AROUND THEIR PERIPHERIES BY SAID FLEXIBLE FRAMES; MANIFOLD CHANNELS LEADING THROUGH SERIES OF REGISTERING HOLES IN THE MEMBRANES TO CONSTITUTE CONTINUOUS PASSAGES FOR THE SUPPLY AND DISCHARGE OF LIQUIDS TO THE COMPARTMENTS; ELELCTRODES FOR THE PASSAGE OF CURRENT THROUGH THE MEMBRANE STACK; END PLATES AT BOTH ENDS OF THE STACK HAVING ELECTRODES; MEANS CLAMPING THE UNIT TOGETHER IN A LIQUID-TIGHT MANNER, THE IMPROVEMENTS CONSISTING IN THAT ALL THE LIQUID CONNECTION PIPES FOR EFFLUENT AND INFLUENT LIQUIDS AS WELL AS THE ELECTRIC CONNECTION LEADS TO THE ELECTRODES ARE MOUNTED SO AS TO LEAD THROUGH ONE OF THE TWO END PLATES AND THROUGH A CONNECTION PLATE ADJOINING THE SAID ONE END PLATE, MEANS FOR DE-
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) | 1965-07-09 | 1966-01-08 | 1966-07-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-07-09 | 1970-01-08 | 1970-07-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-07-09 | 1974-01-08 | 1974-07-10 | $7700.00 | Window Closed / Lapsed |