US2654706A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrolytic regeneration of spent caustic
Assignee: CHARLES W RIPPIE
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Filing: 1949-12-10
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Granted: 1953-10-06
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Expires: 1969-12-10
Abstract
No abstract record available.
Inventors
- 👤 Peter J Gaylor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 11:15
CPC Classifications
C; C10; C10G; C10G19/00; C10G19/08; C01; C01D; C01D1/00; C01D1/04; C01D1/28; C01D1/40
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
87 words
THE PROCESS OF REGENERATING SPENT AQUEOUS CAUSTIC SOLUTION CONTAINING OXIDIZABLE SUPLHURCONTAINING IMPURITIES WHICH COMPRISES PASSING A STREAM OF THE CAUSTIC SOLUTION THROUGH A DIAPHRAGM-TYPE ELECTROLYTIC CELL HAVING INSOLUBLE ELECTRODES, IMPRESSING ON SAID ELECTRODES A CURRENT DENSITY OF SUCH INTENSITY AS TO LIBERATE NASCENT OXYGEN IN DIRECT CONTACT WITH THE OXIDIZABLE SULPHUR-CONTAINING IMPURITIES IN THE ANOLYTE, AND MAINTAINING SAID SOLUTIONIN THE CELL, WHILE SUCH ELECTROLYSIS CONTINUES, FOR A LENGTH OF TIME SUFFICIENT TO BRING ABOUT OXIDIZATION OF AT LEAST A SUBSTANTIAL PORTION OF THE SULPHUR CONTAINING IMPURITIES THEREOF.
Claim 2
Dependent Claim
87 words
THE PROCESS OF REGENERATING SPENT AQUEOUS CAUSTIC SOLUTION CONTAINING OXIDIZABLE SUPLHURCONTAINING IMPURITIES WHICH COMPRISES PASSING A STREAM OF THE CAUSTIC SOLUTION THROUGH A DIAPHRAGM-TYPE ELECTROLYTIC CELL HAVING INSOLUBLE ELECTRODES, IMPRESSING ON SAID ELECTRODES A CURRENT DENSITY OF SUCH INTENSITY AS TO LIBERATE NASCENT OXYGEN IN DIRECT CONTACT WITH THE OXIDIZABLE SULPHUR-CONTAINING IMPURITIES IN THE ANOLYTE, AND MAINTAINING SAID SOLUTIONIN THE CELL, WHILE SUCH ELECTROLYSIS CONTINUES, FOR A LENGTH OF TIME SUFFICIENT TO BRING ABOUT OXIDIZATION OF AT LEAST A SUBSTANTIAL PORTION OF THE SULPHUR CONTAINING IMPURITIES THEREOF.
References Cited (Backward Citations)
US1420212A
Cited
US2140194A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-10-05 | 1957-04-06 | 1957-10-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-10-05 | 1961-04-06 | 1961-10-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-10-05 | 1965-04-06 | 1965-10-06 | $7700.00 | Window Closed / Lapsed |