US2626852A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of sodium sesquicarbonate from a brine containing a substantial sodium carbonate content
Assignee: Kaiser Aluminum and Chemical Corp
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Filing: 1949-04-06
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Granted: 1953-01-27
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Expires: 1969-04-06
Abstract
No abstract record available.
Inventors
- 👤 Alva C Byrns
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 22:49
CPC Classifications
C; C01; C01D; C01D7/00; C01D7/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
106 words
A CYCLIC METHOD OF RECOVERING SODA VALUES FROM SODIUM CARBONATE BRINE CONTAINING A SUBSTANTIAL NA2CO3 CONTENT, WHICH COMPRISES REACTING A QUANTITY OF THE BRINE WITH SODIUM BICARBONATE TO PRECIPITATE SODIUM SESQUICARBONATE, UNTIL THE ALKALINITY OF SAID BRINE IS REDUCED TO A POINT SUCH THAT IN THE NEXT STAGE SUBSTANTIALLY NO SODIUM SESQUICARBONATE IS PRECIPITATE, SEPARATING THE PRECIPITATE OF SODIUM SESQUICARBONATE FROM THE MOTHER LIQUIR, TREATING THE MOTHER LIQUIR WITH CARBON DIOXIDE TO PRECIPITATE SODIUM BICARBONATE, SEPARATING SODIUM BICARBONATE FROM THE BULK OF THE MOTHER LIQUOR AND REACTING THE SEPARATED SODIUM BICARBONATE WITH A FURTHER QUANTITY OF SAID BRINE TO PRECIPITATE A FURTHER QUANTITY OF SODIUM SESQUICARBONATE.
Claim 2
Dependent Claim
106 words
A CYCLIC METHOD OF RECOVERING SODA VALUES FROM SODIUM CARBONATE BRINE CONTAINING A SUBSTANTIAL NA2CO3 CONTENT, WHICH COMPRISES REACTING A QUANTITY OF THE BRINE WITH SODIUM BICARBONATE TO PRECIPITATE SODIUM SESQUICARBONATE, UNTIL THE ALKALINITY OF SAID BRINE IS REDUCED TO A POINT SUCH THAT IN THE NEXT STAGE SUBSTANTIALLY NO SODIUM SESQUICARBONATE IS PRECIPITATE, SEPARATING THE PRECIPITATE OF SODIUM SESQUICARBONATE FROM THE MOTHER LIQUIR, TREATING THE MOTHER LIQUIR WITH CARBON DIOXIDE TO PRECIPITATE SODIUM BICARBONATE, SEPARATING SODIUM BICARBONATE FROM THE BULK OF THE MOTHER LIQUOR AND REACTING THE SEPARATED SODIUM BICARBONATE WITH A FURTHER QUANTITY OF SAID BRINE TO PRECIPITATE A FURTHER QUANTITY OF SODIUM SESQUICARBONATE.
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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) | 1956-01-27 | 1956-07-28 | 1957-01-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-01-27 | 1960-07-28 | 1961-01-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-01-27 | 1964-07-28 | 1965-01-27 | $7700.00 | Window Closed / Lapsed |