US2810932A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for production of diaphragms for use in ion exchange processes
Assignee: Chloride Electrical Storage Co Ltd
•
Filing: 1954-04-30
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Granted: 1957-10-29
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Expires: 1974-04-30
Abstract
No abstract record available.
Inventors
- 👤 Honey Eric Maurice O'conor
- 👤 Hardy Charles Rupert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:31
CPC Classifications
C; C08; C08J; C08J5/00; C08J5/20; C08J5/22; C08J5/2206; C08J5/2275; C08J2327/00; C08J2327/02; C08J2327/04; C08J2327/06; C08J2331/00; C08J2331/02; C08J2331/04; C08J2365/00; C08J2365/02; Y; Y10; Y10S; Y10S264/00; Y10S264/61; Y10S424/00; Y10S424/07
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
106 words
A PROCESS FOR THE PRODUCTION OF A DIAPHRAGM FOR USE IN ELECTROLYTIC AND ION EXCHANGE PROCESSES COMPRISING GELLING A THERMOPLASTIC POLYMER WITH THE AID OF A SOLVENT THEREFOR, INCORPORATING AND DISPERSING FINE GRANULES OF AN ION EXCHANGE RESIN IN THE GELLED THERMOPLASTIC POLYMER, THE WEIGHT OF RESIN USED BEING AT LEAST FOUR TIMES THE WEIGHT OF THE THERMOPLASTIC POLYMER IN THE GEL, SHAPING THE MIXTURE INTO SHEETS, REMOVING A SUBSTANTIAL PROPORTION OF THE SOLVENT BY EVAPORATION AND REDUCING THE THICKNESS OF THE SHEETS BY CALENDERING SO AS TO BRING INTO INTIMATE CONTACT THE GRANULES OF ION EXCHANGE RESIN AND FINALLY REMOVING THE REMAINDER OF THE SOLVENT.
Claim 2
Dependent Claim
106 words
A PROCESS FOR THE PRODUCTION OF A DIAPHRAGM FOR USE IN ELECTROLYTIC AND ION EXCHANGE PROCESSES COMPRISING GELLING A THERMOPLASTIC POLYMER WITH THE AID OF A SOLVENT THEREFOR, INCORPORATING AND DISPERSING FINE GRANULES OF AN ION EXCHANGE RESIN IN THE GELLED THERMOPLASTIC POLYMER, THE WEIGHT OF RESIN USED BEING AT LEAST FOUR TIMES THE WEIGHT OF THE THERMOPLASTIC POLYMER IN THE GEL, SHAPING THE MIXTURE INTO SHEETS, REMOVING A SUBSTANTIAL PROPORTION OF THE SOLVENT BY EVAPORATION AND REDUCING THE THICKNESS OF THE SHEETS BY CALENDERING SO AS TO BRING INTO INTIMATE CONTACT THE GRANULES OF ION EXCHANGE RESIN AND FINALLY REMOVING THE REMAINDER OF THE SOLVENT.
References Cited (Backward Citations)
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US2155016A
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US2566982A
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US2632210A
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US2681320A
Cited
US2681319A
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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) | 1960-10-28 | 1961-04-29 | 1961-10-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-10-28 | 1965-04-29 | 1965-10-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-10-28 | 1969-04-29 | 1969-10-29 | $7700.00 | Window Closed / Lapsed |