US2671055A
Expired / Lapsed
US
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Process for electrodialyzing aqueous liquids
Assignee: Nederlandse Organisatie voor Toegepast Natuurwetenschappelijk Onderzoek TNO
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Filing: 1948-07-29
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Granted: 1954-03-02
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Expires: 1968-07-29
Abstract
No abstract record available.
Inventors
- 👤 Aten Adriaan Hendrik Willem
- 👤 Wiechers Sybrandus Gerhardus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:40
CPC Classifications
B; B01; B01D; B01D61/00; B01D61/42; B01D61/422; C; C13; C13B; C13B20/00; C13B20/18; B01D2311/00; B01D2311/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
150 words
THE PROCESS OF REMOVING ELECTROLYTE ELECTRODIALYSIS FROM AN AQUEOUS LIQUID SENSITIVE TO PH CHANGES, WHICH COMPRISES, WHILE SUBJECTING A BODY OF SUCH LIQUID DURING AGITATION THEREOF BETWEEN SPACED NEUTRAL DIAPHRAGMS TO A DIFFERENCE OF ELECTRIC POTENTIAL BETWEEN AN ANODE AND A CATHODE IMMERSED, RESPECTIVELY, IN AN ANOLYTE AND A CATHOLYTE AT THE OTHER SIDES OF SAID DIAPHRAGMS COUNTINUOUSLY FLOWING INTO THE ANOLYTE, IN AT LEAST ONE WEAK AQUEOUS SOLUTION AN ACID AND AN ADDED NEUTRAL INORGANIC SALT, THEREBY SUPPLYING INTO THE ANOLYTE H+ IONS, OTHER CTIONS AND ANIONS IN PREDETERMINED RELATIVE CONCENTRATIONS, CONTINUOUSLY FLOWING INTO THE CATHOLYTE A WEAKLY ALKALINE AQUEOUS ELECTROLYTE SOLUTION, CONTINUOUSLY TAKING OFF SURPLUS ANOLYTE AND SURPLUS CATHOLYTE, AND FOR COUNTERACTING A CHANGE OF THE PH OF SAID BODY CHANGING THE RATE OF SAID SALT INFLOW SO AS TO CHANGE THE RATIO OF THE CONCENTRATION OF H+ IONS TO THE CONCENTRATION OF OTHER CATIONS IN THE ANOLYTE.
Claim 2
Dependent Claim
150 words
THE PROCESS OF REMOVING ELECTROLYTE ELECTRODIALYSIS FROM AN AQUEOUS LIQUID SENSITIVE TO PH CHANGES, WHICH COMPRISES, WHILE SUBJECTING A BODY OF SUCH LIQUID DURING AGITATION THEREOF BETWEEN SPACED NEUTRAL DIAPHRAGMS TO A DIFFERENCE OF ELECTRIC POTENTIAL BETWEEN AN ANODE AND A CATHODE IMMERSED, RESPECTIVELY, IN AN ANOLYTE AND A CATHOLYTE AT THE OTHER SIDES OF SAID DIAPHRAGMS COUNTINUOUSLY FLOWING INTO THE ANOLYTE, IN AT LEAST ONE WEAK AQUEOUS SOLUTION AN ACID AND AN ADDED NEUTRAL INORGANIC SALT, THEREBY SUPPLYING INTO THE ANOLYTE H+ IONS, OTHER CTIONS AND ANIONS IN PREDETERMINED RELATIVE CONCENTRATIONS, CONTINUOUSLY FLOWING INTO THE CATHOLYTE A WEAKLY ALKALINE AQUEOUS ELECTROLYTE SOLUTION, CONTINUOUSLY TAKING OFF SURPLUS ANOLYTE AND SURPLUS CATHOLYTE, AND FOR COUNTERACTING A CHANGE OF THE PH OF SAID BODY CHANGING THE RATE OF SAID SALT INFLOW SO AS TO CHANGE THE RATIO OF THE CONCENTRATION OF H+ IONS TO THE CONCENTRATION OF OTHER CATIONS IN THE ANOLYTE.
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) | 1957-03-01 | 1957-08-31 | 1958-03-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-03-01 | 1961-08-31 | 1962-03-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-03-01 | 1965-08-31 | 1966-03-02 | $7700.00 | Window Closed / Lapsed |