US2533246A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of lithium chloride from spodumene
Assignee: Individual
•
Filing: 1947-03-11
•
Granted: 1950-12-12
•
Expires: 1967-03-11
Abstract
No abstract record available.
Inventors
- 👤 Earl T Hayes
- 👤 Frank P Williams
- 👤 Woldemar M Sternberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 09:06
CPC Classifications
C; C22; C22B; C22B26/00; C22B26/10; C22B26/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
82 words
A PROCESS FOR THE PRODUCTION OF WATER SOLUBLE LITHIUM COMPOUNDS WHICH COMPRISES SUBJECTING A MIXTURE OF ABOUT 4 TO 6 PARTS BY WEIGHT OF A LITHIUM BEARING SILICATE, ABOUT 4 TO 6 PARTS BY WEIGHT OF LIMESTONE, AND ABOUT 2 TO 4 PARTS BY WEIGHT OF CALCIUM SULPHATE, HAVING A PARTICLE SIZE OF ABOUT MINUS 200 MESH TO TREATMENT AT TEMPERATUES OF ABOUT 1000 TO 1500 DEGREES CENTIGRADE AND LEACHING THE CALCINED MIXTURE WITH WATER TO RECOVER THE WATER SOLUBLE LITHIUM COMPOUND.
Claim 2
Dependent Claim
82 words
A PROCESS FOR THE PRODUCTION OF WATER SOLUBLE LITHIUM COMPOUNDS WHICH COMPRISES SUBJECTING A MIXTURE OF ABOUT 4 TO 6 PARTS BY WEIGHT OF A LITHIUM BEARING SILICATE, ABOUT 4 TO 6 PARTS BY WEIGHT OF LIMESTONE, AND ABOUT 2 TO 4 PARTS BY WEIGHT OF CALCIUM SULPHATE, HAVING A PARTICLE SIZE OF ABOUT MINUS 200 MESH TO TREATMENT AT TEMPERATUES OF ABOUT 1000 TO 1500 DEGREES CENTIGRADE AND LEACHING THE CALCINED MIXTURE WITH WATER TO RECOVER THE WATER SOLUBLE LITHIUM COMPOUND.
References Cited (Backward Citations)
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US1544114A
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US2044018A
Cited
US2021987A
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Cited
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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) | 1953-12-11 | 1954-06-12 | 1954-12-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-12-11 | 1958-06-12 | 1958-12-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-12-11 | 1962-06-12 | 1962-12-12 | $7700.00 | Window Closed / Lapsed |