US2784056A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of processing searles lake brine
Assignee: Stauffer Chemical Co
•
Filing: 1953-02-16
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Granted: 1957-03-05
•
Expires: 1973-02-16
Abstract
No abstract record available.
Inventors
- 👤 James V Wiseman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 15:57
CPC Classifications
C; C01; C01D; C01D7/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
80 words
A PROCES FOR THE CARBONATION OF RAW SEARLES LAKE BRINE WHEREBY THERE IS OBTAINED CRYSTALS OF SODIUM BICARBONATE THEREFROM, SAID CRYSTALS BEING LARGE, EASLIY FILTRABLE AND HAVING BLUNT TERMINATIONS, THE PROCESS COMPRISING PASSING A GAS CONTAINING FROM 12% TO 25% CARBON DIOXIDE THROUGH THE RAW LAKE BRINE AT A TEMPERATURE OF FROM 20* TO 38* C. AT A PRESSURE SUCH THAT THE CARBON DIOXIDE HAS A PARTIAL PRESSURE OF AT LEAST 8 P.S.I.A. TO PRECIPITATE SODIUM BICARBONATE THEREFROM AND RECOVERING
Claim 2
Dependent Claim
80 words
A PROCES FOR THE CARBONATION OF RAW SEARLES LAKE BRINE WHEREBY THERE IS OBTAINED CRYSTALS OF SODIUM BICARBONATE THEREFROM, SAID CRYSTALS BEING LARGE, EASLIY FILTRABLE AND HAVING BLUNT TERMINATIONS, THE PROCESS COMPRISING PASSING A GAS CONTAINING FROM 12% TO 25% CARBON DIOXIDE THROUGH THE RAW LAKE BRINE AT A TEMPERATURE OF FROM 20* TO 38* C. AT A PRESSURE SUCH THAT THE CARBON DIOXIDE HAS A PARTIAL PRESSURE OF AT LEAST 8 P.S.I.A. TO PRECIPITATE SODIUM BICARBONATE THEREFROM AND RECOVERING
References Cited (Backward Citations)
US2675297A
Cited
US1618834A
Cited
US1674474A
Cited
US1751132A
Cited
US1865833A
Cited
US1865832A
Cited
US2256962A
Cited
US2567867A
Cited
US2626852A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-03-04 | 1960-09-03 | 1961-03-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-03-04 | 1964-09-03 | 1965-03-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-03-04 | 1968-09-03 | 1969-03-05 | $7700.00 | Window Closed / Lapsed |