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US2987464A
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US
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Multicell electrodialysis apparatus
Assignee: Nederlandse Organisatie voor Toegepast Natuurwetenschappelijk Onderzoek TNO
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Filing: 1958-01-07
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Granted: 1961-06-06
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Expires: 1978-01-07
Abstract
No abstract record available.
Inventors
- 👤 Wilson John Reuel
- 👤 Willem In T Veld
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 05:44
CPC Classifications
B; B01; B01D; B01D61/00; B01D61/42; B01D61/44; B01D61/46; B01D61/50
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
174 words
A MULTICELL ELECTRODIALYZING APPARATUS COMPRISING RIGID END PLATES, AN ANODE ELECTRODE AT ONE END OF SAID APPARATUS, A CATHODE ELECTRODE AT THE OTHER END OF SAID APPARATUS, A PLURALITY OF ALTERNATELY ARRANGED ANION PERMEABLE AND CATION PERMEABLE MEMBRANES BETWEEN SAID ELECTRODES WITH GASKETS OF DEFORMABLE MATERIAL BETWEEN EACH MEMBRANE FORMING A MEMBRANE AND GASKET STACK, CONDUITS FOR DIALYSATE AND RINSE LIQUID FORMED IN SAID MEMBRANE AND GASKET STACK, MEANS TO SEPARATE SAID MEMBRANE AND GASKET STACK INTO ALTERNATE CONCENTRATING AND DILUTING CELLS, SAID MEMBRANE AND GASKET STACK BEING DIVIDED INTO A PLURALITY OF INTERMEDIATE CELL UNITS, EACH INTERMEDIATE CELL UNIT HAVING TWO STRUCTURALLY IDENTICALLY RIGID HALF-INTERMEDIATE CELL FRAMES EXTENDING PERIPHERIALLY OUTSIDE THE MEMBRANE AND GASKET STACK AND HAVING A CENTRAL OPENING THERETHROUGH OF THE SAME APPROXIMATE SIZE AS THE EFFECTIVE MEMBRANE SURFACE AREA IN ADJACENT CONCENTRATING AND DILUTING CELLS, SAID HALF-INTERMEDIATECELL FRAMES BEING ATTACHED TO EACH OTHER TO FORM A MANAGEABLE AND REPLACEABLE INTERMEDIATE CELL UNIT HAVING INTERPOSED BETWEEN THEM FROM 20 TO 200 OF SAID MEMBRANES, SAID RIGID HALF-INTERMEDIATE-CELL FRAMES OF ADJACENT IN-
Claim 2
Dependent Claim
174 words
A MULTICELL ELECTRODIALYZING APPARATUS COMPRISING RIGID END PLATES, AN ANODE ELECTRODE AT ONE END OF SAID APPARATUS, A CATHODE ELECTRODE AT THE OTHER END OF SAID APPARATUS, A PLURALITY OF ALTERNATELY ARRANGED ANION PERMEABLE AND CATION PERMEABLE MEMBRANES BETWEEN SAID ELECTRODES WITH GASKETS OF DEFORMABLE MATERIAL BETWEEN EACH MEMBRANE FORMING A MEMBRANE AND GASKET STACK, CONDUITS FOR DIALYSATE AND RINSE LIQUID FORMED IN SAID MEMBRANE AND GASKET STACK, MEANS TO SEPARATE SAID MEMBRANE AND GASKET STACK INTO ALTERNATE CONCENTRATING AND DILUTING CELLS, SAID MEMBRANE AND GASKET STACK BEING DIVIDED INTO A PLURALITY OF INTERMEDIATE CELL UNITS, EACH INTERMEDIATE CELL UNIT HAVING TWO STRUCTURALLY IDENTICALLY RIGID HALF-INTERMEDIATE CELL FRAMES EXTENDING PERIPHERIALLY OUTSIDE THE MEMBRANE AND GASKET STACK AND HAVING A CENTRAL OPENING THERETHROUGH OF THE SAME APPROXIMATE SIZE AS THE EFFECTIVE MEMBRANE SURFACE AREA IN ADJACENT CONCENTRATING AND DILUTING CELLS, SAID HALF-INTERMEDIATECELL FRAMES BEING ATTACHED TO EACH OTHER TO FORM A MANAGEABLE AND REPLACEABLE INTERMEDIATE CELL UNIT HAVING INTERPOSED BETWEEN THEM FROM 20 TO 200 OF SAID MEMBRANES, SAID RIGID HALF-INTERMEDIATE-CELL FRAMES OF ADJACENT IN-
References Cited (Backward Citations)
US2741591A
Cited
US2784158A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-06-05 | 1964-12-05 | 1965-06-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-06-05 | 1968-12-05 | 1969-06-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-06-05 | 1972-12-05 | 1973-06-06 | $7700.00 | Window Closed / Lapsed |