US3268289A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Recovery of lithium from brines
Assignee: Signal Oil and Gas Co
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Filing: 1962-12-11
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Granted: 1966-08-23
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Expires: 1982-12-11
Abstract
No abstract record available.
Inventors
- 👤 James G Macey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 07:52
CPC Classifications
C; C01; C01F; C01F5/00; C01D; C01D15/00; C01D15/04; C01D5/00; C01F5/40
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
99 words
IN THE PROCESSING OF A NATURAL BRINE BY EVAPORATION, SAID BRINE CONTAINING SODIUM SULFATE, MAGNESIUM CHLORIDE AND LITHIUM CHLORIDE, THE PROCESS COMPRISING DIVIDING SAID BRINE INTO FIRST AND SECOND PORTIONS AND EVAPORATING THE FIRST PORTION AND COOLING THE THUS CONCENTRATED FIRST PORTION WHEREBY THERE IS PRECIPITATED SODIUM SULFATE THEREFROM, DISCARDING THE SUPERNATANT LIQUID FROM THE FIRST PORTION, ADDING THE SECOND PORTION TO THE THUS PRECIPITATED SODIUM SULFATE WHEREBY THE SODIUM SULFATE CONTENT OF THE SECOND PORTION IS INCREASED, AND EVAPORATING SAID BRINE WHEREBY MAGNESIUM SULFATE IS PRECIPITATED FROM THE BRINE, LEAVING A RESIDUAL LIQUID OF ENCHANCED LITHIUM CHLORIDE CONTENT.
Claim 2
Dependent Claim
99 words
IN THE PROCESSING OF A NATURAL BRINE BY EVAPORATION, SAID BRINE CONTAINING SODIUM SULFATE, MAGNESIUM CHLORIDE AND LITHIUM CHLORIDE, THE PROCESS COMPRISING DIVIDING SAID BRINE INTO FIRST AND SECOND PORTIONS AND EVAPORATING THE FIRST PORTION AND COOLING THE THUS CONCENTRATED FIRST PORTION WHEREBY THERE IS PRECIPITATED SODIUM SULFATE THEREFROM, DISCARDING THE SUPERNATANT LIQUID FROM THE FIRST PORTION, ADDING THE SECOND PORTION TO THE THUS PRECIPITATED SODIUM SULFATE WHEREBY THE SODIUM SULFATE CONTENT OF THE SECOND PORTION IS INCREASED, AND EVAPORATING SAID BRINE WHEREBY MAGNESIUM SULFATE IS PRECIPITATED FROM THE BRINE, LEAVING A RESIDUAL LIQUID OF ENCHANCED LITHIUM CHLORIDE CONTENT.
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) | 1969-08-22 | 1970-02-21 | 1970-08-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-22 | 1974-02-21 | 1974-08-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-22 | 1978-02-21 | 1978-08-23 | $7700.00 | Window Closed / Lapsed |