US2964381A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Recovery of lithium
Assignee: Dow Chemical Co
•
Filing: 1957-01-29
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Granted: 1960-12-13
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Expires: 1977-01-29
Abstract
No abstract record available.
Inventors
- 👤 Robert D Goodenough
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 18:43
CPC Classifications
C; C22; C22B; C22B26/00; C22B26/10; C22B26/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
94 words
A PROCESS FOR THE RECOVERY OF LITHIUM VALUES FROM AN AQUOUS LITHIUM SOLUTION CONTAINING AT LEAST ONE ALKALINE EARTH METAL SALT, WHICH COMPRISES INTERMIXING WITH THE SOLUTION A SOLUABLE ALUMINUM SALT IN A STOICHIOMETRIC EXCESS TO REACT WITH THE LITHIUM PRESENT IN THE SOLUTION AT AN APPARENT PH IN THE RANGE OF 6.0 TO 8.1 AND AT A TEMPERATURE IN THE RANGE OF 20* TO 100*C. TO PRECIPITATE AS LITHIUM ALUMINATE COMPLEX A MAJOR PORTION OF THE LITHIUM VALUES PRESENT IN SAID AQUOUS LITHIUM SOLUTION WITHOUT CONCOMITANTLY PRECIPITATING SUBSTANTIAL QUANTIES OF ALKALINE EARTH METALS.
Claim 2
Dependent Claim
94 words
A PROCESS FOR THE RECOVERY OF LITHIUM VALUES FROM AN AQUOUS LITHIUM SOLUTION CONTAINING AT LEAST ONE ALKALINE EARTH METAL SALT, WHICH COMPRISES INTERMIXING WITH THE SOLUTION A SOLUABLE ALUMINUM SALT IN A STOICHIOMETRIC EXCESS TO REACT WITH THE LITHIUM PRESENT IN THE SOLUTION AT AN APPARENT PH IN THE RANGE OF 6.0 TO 8.1 AND AT A TEMPERATURE IN THE RANGE OF 20* TO 100*C. TO PRECIPITATE AS LITHIUM ALUMINATE COMPLEX A MAJOR PORTION OF THE LITHIUM VALUES PRESENT IN SAID AQUOUS LITHIUM SOLUTION WITHOUT CONCOMITANTLY PRECIPITATING SUBSTANTIAL QUANTIES OF ALKALINE EARTH METALS.
References Cited (Backward Citations)
US2044018A
Cited
GB633008A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-12-13 | 1964-06-13 | 1964-12-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-12-13 | 1968-06-13 | 1968-12-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-12-13 | 1972-06-13 | 1972-12-13 | $7700.00 | Window Closed / Lapsed |