Patent US2792283A successfully refreshed from Google Patents.
US2792283A
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Process of making sodium bicarbonate from sodium hydroxide cell liquor
Assignee: Diamond Shamrock Corp
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Filing: 1953-01-28
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Granted: 1957-05-14
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Expires: 1973-01-28
Abstract
No abstract record available.
Inventors
- 👤 Hill Archie
- 👤 Ward J Burkholder
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 12:14
CPC Classifications
C; C01; C01D; C01D7/00; C01D7/07; Y; Y10; Y10S; Y10S423/00; Y10S423/03
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
56 words
THE METHOD OF OBTAINING SODIUM BICARBONATE CRYSTALS OF A FILTERABLE SIZE FROM THE EFFIUENT FROM A DIAPHRAGM-TYPE ELECTROLYTIC CHLORINE-CAUSTIC CELL, WHICH CONSISTS ESSENTIALLY OF CONTACTING SAID EFFLUENT WITH CARBON DIOXIDE IN A CLOSED SYSTEM TO PROVIDE A PRESSURE OF CARBON DIOXIDE OF BETWEEN 30 AND 50 P.S.I. GAUGE, AND AT A TEMPERATURE IN EXCESS OF 65*C.
Claim 2
Independent Claim
56 words
THE METHOD OF OBTAINING SODIUM BICARBONATE CRYSTALS OF A FILTERABLE SIZE FROM THE EFFIUENT FROM A DIAPHRAGM-TYPE ELECTROLYTIC CHLORINE-CAUSTIC CELL, WHICH CONSISTS ESSENTIALLY OF CONTACTING SAID EFFLUENT WITH CARBON DIOXIDE IN A CLOSED SYSTEM TO PROVIDE A PRESSURE OF CARBON DIOXIDE OF BETWEEN 30 AND 50 P.S.I. GAUGE, AND AT A TEMPERATURE IN EXCESS OF 65*C.
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) | 1960-05-13 | 1960-11-12 | 1961-05-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-05-13 | 1964-11-12 | 1965-05-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-05-13 | 1968-11-12 | 1969-05-14 | $7700.00 | Window Closed / Lapsed |