US2951027A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrodialysing apparatus with supported membranes
Assignee: National Research Development Corp UK
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Filing: 1957-03-04
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Granted: 1960-08-30
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Expires: 1977-03-04
Abstract
No abstract record available.
Inventors
- 👤 Partridge Stanley Miles
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 17:48
CPC Classifications
B; B01; B01D; B01D61/00; B01D61/42; B01D61/44; B01D61/46; B01D61/50
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
96 words
IN AN ELECTRODIALYZING APPARATUS COMPRISING AN ANODE COMPARTMENT, A CATHODE COMPARTMENT, AND AN ASSEMBLAGE ARRANGED BETWEEN THE ANODE COMPARTMENT AND THE CATHODE COMPARTMENT INCLUDING A PLURALITY OF ALTERNATE CATION-EXCHANGE AND ANION-EXCHANGE NON-RIGID MEMBRANES WITH A PLURALITY OF FLAT SEPARATOR PLATES OF INERT RESILIENT MATERIAL ARRANGED BETWEEN AND IN CONTACT WITH ADJACENT MEMBRANES, THE IMPROVEMENT WHEREIN EACH SAID SEPARATOR PLATE HAS A PLURALITY OF PERFORATIONS PROVIDING OPENINGS ACROSS THE THICKNESS OF EACH SAID PLATE AND A PLURALITY OF GROOVES IN THE SURFACE OF EACH SAID PLATE CONNECTING THE PERFORATIONS OF EACH SAID PLATE IN SPACED VERTICAL SERIES.
Claim 2
Dependent Claim
96 words
IN AN ELECTRODIALYZING APPARATUS COMPRISING AN ANODE COMPARTMENT, A CATHODE COMPARTMENT, AND AN ASSEMBLAGE ARRANGED BETWEEN THE ANODE COMPARTMENT AND THE CATHODE COMPARTMENT INCLUDING A PLURALITY OF ALTERNATE CATION-EXCHANGE AND ANION-EXCHANGE NON-RIGID MEMBRANES WITH A PLURALITY OF FLAT SEPARATOR PLATES OF INERT RESILIENT MATERIAL ARRANGED BETWEEN AND IN CONTACT WITH ADJACENT MEMBRANES, THE IMPROVEMENT WHEREIN EACH SAID SEPARATOR PLATE HAS A PLURALITY OF PERFORATIONS PROVIDING OPENINGS ACROSS THE THICKNESS OF EACH SAID PLATE AND A PLURALITY OF GROOVES IN THE SURFACE OF EACH SAID PLATE CONNECTING THE PERFORATIONS OF EACH SAID PLATE IN SPACED VERTICAL SERIES.
References Cited (Backward Citations)
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Cited
US2225024A
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GB682703A
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US2741591A
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US2735812A
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US2784158A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-08-30 | 1964-02-29 | 1964-08-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-08-30 | 1968-02-29 | 1968-08-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-08-30 | 1972-02-29 | 1972-08-30 | $7700.00 | Window Closed / Lapsed |