Patent US3135673A successfully refreshed from Google Patents.
US3135673A
Expired / Lapsed
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Process and apparatus for electrolyzing salt solutions
Assignee: Veolia WTS Systems USA Inc
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Filing: 1961-05-05
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Granted: 1964-06-02
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Expires: 1981-05-05
Abstract
No abstract record available.
Inventors
- 👤 Charles E Tirrell
- 👤 Edgardo J Parsi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 12:42
CPC Classifications
C; C25; C25B; C25B1/00; C01; C01D; C01D5/00; C01D5/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
130 words
THE METHOD OF CONVERTING AQUEOUS ELECTROLYTIC SALT SOLUTIONS TO THEIR CORRESPONDING ACID AND BASE SOLUTIONS COMPRISING: PASSING SAID SALT SOLUTION INTO THE CENTER COMPARTMENT OF A THREE-COMPARTMENT ELECTROLYTIC CELL HAVING A CATHODE COMPARTMENT SEPARATED FROM THE CENTER COMPARTMENT BY A CATION-SELECTIVE ION EXCHANGE MEMBRANE AND A SPACED FLUID-PERMEABLE DIAPHRAGM SEPARATING THE CENTER COMPARTMENT FROM THE ANODE COMPARTMENT, MAINTAINING A GREATER PRESSURE IN SAID CENTER COMPARTMENT THAN THE PRESSURE IN THE ANODE COMPARTMENT TO CAUSE SAID FEED SALT SOLUTION TO FLOW FROM THE CENTER COMPARTMENT THROUGH SAID POROUS DIAPHRAGM INTO AND OUT OF SAID ANODE COMPARTMENT, INTRODUCING AN ELECTROLYTE SOLUTION INTO SAID CATHODE COMPARTMENT, PASSING A DIRECT ELECTRIC CURRENT TRANSVERSELY THROUGH SAID COMPARTMENTS, DIAPHRAGM, AND MEMBRANE AND REMOVING THE CORRESPONDING ACID AND BASE SOLUTIONS FROM THE ANODE AND CATHODE COMPARTMENTS RESPECTIVELY.
Claim 2
Independent Claim
130 words
THE METHOD OF CONVERTING AQUEOUS ELECTROLYTIC SALT SOLUTIONS TO THEIR CORRESPONDING ACID AND BASE SOLUTIONS COMPRISING: PASSING SAID SALT SOLUTION INTO THE CENTER COMPARTMENT OF A THREE-COMPARTMENT ELECTROLYTIC CELL HAVING A CATHODE COMPARTMENT SEPARATED FROM THE CENTER COMPARTMENT BY A CATION-SELECTIVE ION EXCHANGE MEMBRANE AND A SPACED FLUID-PERMEABLE DIAPHRAGM SEPARATING THE CENTER COMPARTMENT FROM THE ANODE COMPARTMENT, MAINTAINING A GREATER PRESSURE IN SAID CENTER COMPARTMENT THAN THE PRESSURE IN THE ANODE COMPARTMENT TO CAUSE SAID FEED SALT SOLUTION TO FLOW FROM THE CENTER COMPARTMENT THROUGH SAID POROUS DIAPHRAGM INTO AND OUT OF SAID ANODE COMPARTMENT, INTRODUCING AN ELECTROLYTE SOLUTION INTO SAID CATHODE COMPARTMENT, PASSING A DIRECT ELECTRIC CURRENT TRANSVERSELY THROUGH SAID COMPARTMENTS, DIAPHRAGM, AND MEMBRANE AND REMOVING THE CORRESPONDING ACID AND BASE SOLUTIONS FROM THE ANODE AND CATHODE COMPARTMENTS RESPECTIVELY.
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) | 1967-06-02 | 1967-12-02 | 1968-06-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-06-02 | 1971-12-02 | 1972-06-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-06-02 | 1975-12-02 | 1976-06-02 | $7700.00 | Window Closed / Lapsed |