Patent US2827426A successfully refreshed from Google Patents.
US2827426A
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Cationic permselective membranes and their use in electrolysis
Assignee: Rohm and Haas Co
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Filing: 1954-02-12
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Granted: 1958-03-18
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Expires: 1974-02-12
Abstract
No abstract record available.
Inventors
- 👤 George W Bodamer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:39
CPC Classifications
C; C08; C08J; C08J5/00; C08J5/20; C08J5/22; C08J5/2206; C08J5/2275; C08J5/2281; B; B01; B01J; B01J47/00; B01J47/12; C08J2323/00; C08J2323/02; C08J2323/04; C08J2323/06; C08J2327/00; C08J2327/02; C08J2327/04; C08J2327/12; C08J2327/18; C08J2427/00; C08J2427/02; C08J2427/12; C08J2427/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
111 words
IN THE ELECTROLYTIC CONVERSION OF AN ALKALI METAL HALIDE TO AN ALKALI METAL HYDROXIDE AND ELEMENTAL HALOGEN WHEREIN A DIRECT CURRENT IS PASSED THROUGH AN ELECTROLYSIS CELL CONTAINING A SOLUTION OF SAID ALKALI METAL HALIDE, THE IMPROVEMENT WHICH CONSISTS OF INTERPOSING BETWEEN THE ANODE AND THE CATHODE OF SAID CELL AND ADJACENT TO SAID ANODE AN ESSENTIALLY CONTINUOUS AND NON-POROUS, PERMSELECTIVE MEMBRANE COMPRISING PARTICLES OF CATION-EXCHANGE RESIN DISPERSED INTIMATELY AND UNIFORMLY THROUGHOUT A MATRIX CONSISTING ESSENTIALLY OF A POLYMER OF AT LEAST ONE PERHALOETHYLENE FROM THE GROUP CONSISTING OF TRIFLUOROCHLOROETHYLENE AND TETRAFLUOROETHYLENE, THEREBY FORMING AN ANODE COMPARTMENT WHICH IS SEPARATED FROM THE REMAINDER OF THE CELL BY MEANS OF SAID MEMBRANE.
Claim 2
Dependent Claim
111 words
IN THE ELECTROLYTIC CONVERSION OF AN ALKALI METAL HALIDE TO AN ALKALI METAL HYDROXIDE AND ELEMENTAL HALOGEN WHEREIN A DIRECT CURRENT IS PASSED THROUGH AN ELECTROLYSIS CELL CONTAINING A SOLUTION OF SAID ALKALI METAL HALIDE, THE IMPROVEMENT WHICH CONSISTS OF INTERPOSING BETWEEN THE ANODE AND THE CATHODE OF SAID CELL AND ADJACENT TO SAID ANODE AN ESSENTIALLY CONTINUOUS AND NON-POROUS, PERMSELECTIVE MEMBRANE COMPRISING PARTICLES OF CATION-EXCHANGE RESIN DISPERSED INTIMATELY AND UNIFORMLY THROUGHOUT A MATRIX CONSISTING ESSENTIALLY OF A POLYMER OF AT LEAST ONE PERHALOETHYLENE FROM THE GROUP CONSISTING OF TRIFLUOROCHLOROETHYLENE AND TETRAFLUOROETHYLENE, THEREBY FORMING AN ANODE COMPARTMENT WHICH IS SEPARATED FROM THE REMAINDER OF THE CELL BY MEANS OF SAID MEMBRANE.
References Cited (Backward Citations)
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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) | 1961-03-17 | 1961-09-16 | 1962-03-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-03-17 | 1965-09-16 | 1966-03-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-03-17 | 1969-09-16 | 1970-03-18 | $7700.00 | Window Closed / Lapsed |