Patent US2610105A successfully refreshed from Google Patents.
US2610105A
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Process of simultaneously purifying and dehydrating caustic alkali solutions containing chlorates
Assignee: Dow Chemical Co
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Filing: 1951-03-26
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Granted: 1952-09-09
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Expires: 1971-03-26
Abstract
No abstract record available.
Inventors
- 👤 David J Pye
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 19:43
CPC Classifications
C; C01; C01D; C01D1/00; C01D1/04; C01D1/28; Y; Y10; Y10S; Y10S159/00; Y10S159/34
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
87 words
IN THE CONCENTRATION OF ELECTROLYTIC CAUSTIC ALKALI SOLUTIONS CONTAINING CHLORATE AS IMPURITY, WHEREIN THE ELECTROLYTIC CELL LIQUOR IS PRECONCENTRATED BY EVAPORATION TO REMOVE SALT BY CRYSTALLIZATION, SEPARATED FROM SALT CRYSTALS THEREBY FORMED AND THEN FURTHER CONCENTRATED BY EVAPORATION, THEN IMPROVEMENT WHICH CONSISTS IN ADDING SUCROSE TO SUCH PRECONCENTRATED SOLUTION IN AMOUNT IN EXCESS OF 1 MOL PER 8 MOLS OF CHLORATE CONTAINED THEREIN AND HEATING THE SO TREATED SOLUTION AT TEMPERATURES ABOVE 200* C. TO EFFECT FURTHER EVAPORATION OF SOLUTION ACCOMPANIED BY CHEMICAL REDUCTION OF THE CHLORATE.
Claim 2
Dependent Claim
87 words
IN THE CONCENTRATION OF ELECTROLYTIC CAUSTIC ALKALI SOLUTIONS CONTAINING CHLORATE AS IMPURITY, WHEREIN THE ELECTROLYTIC CELL LIQUOR IS PRECONCENTRATED BY EVAPORATION TO REMOVE SALT BY CRYSTALLIZATION, SEPARATED FROM SALT CRYSTALS THEREBY FORMED AND THEN FURTHER CONCENTRATED BY EVAPORATION, THEN IMPROVEMENT WHICH CONSISTS IN ADDING SUCROSE TO SUCH PRECONCENTRATED SOLUTION IN AMOUNT IN EXCESS OF 1 MOL PER 8 MOLS OF CHLORATE CONTAINED THEREIN AND HEATING THE SO TREATED SOLUTION AT TEMPERATURES ABOVE 200* C. TO EFFECT FURTHER EVAPORATION OF SOLUTION ACCOMPANIED BY CHEMICAL REDUCTION OF THE CHLORATE.
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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) | 1955-09-09 | 1956-03-10 | 1956-09-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-09-09 | 1960-03-10 | 1960-09-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-09-09 | 1964-03-10 | 1964-09-09 | $7700.00 | Window Closed / Lapsed |