US2883264A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Solvent extraction of thorium values from aqueous solutions
Assignee: Individual
•
Filing: 1950-10-18
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Granted: 1959-04-21
•
Expires: 1970-10-18
Abstract
No abstract record available.
Inventors
- 👤 James C Warf
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:28
CPC Classifications
C; C01; C01F; C01F15/00; C22; C22B; C22B60/00; C22B60/02; C22B60/0291; G; G21; G21C; G21C19/00; G21C19/42; G21C19/44; G21C19/46; Y; Y02; Y02E; Y02E30/00; Y02E30/30; Y02W; Y02W30/00; Y02W30/50
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
68 words
A PROCESS FOR SEPARATING THORIUM VALUES FROM RARE EARTH METAL VALUES CONTAINED IN AQUEOUS SOLUTIONS, COMPRISING PROVIDING A CONTENT OF MINERAL ACID OF FROM 3 TO 7 N IN SAID SOLUTION, MIXING A SUBSTANTIALLY WATER-IMMISCIBLE ALKYL PHOSPHATE AND A HYDROCARBON, CONTACTING THE AQUEOUS SOLUTION WITH THE ORGANIC MIXTURE OBTAINED, AND SEPARATING AN AQUEOUS PHASE CONTAINING SAID RARE METAL VALVES FROM A SOLVENT EXTRACT PHASE CONTAINING SAID THORIAN VALUES.
Claim 2
Dependent Claim
68 words
A PROCESS FOR SEPARATING THORIUM VALUES FROM RARE EARTH METAL VALUES CONTAINED IN AQUEOUS SOLUTIONS, COMPRISING PROVIDING A CONTENT OF MINERAL ACID OF FROM 3 TO 7 N IN SAID SOLUTION, MIXING A SUBSTANTIALLY WATER-IMMISCIBLE ALKYL PHOSPHATE AND A HYDROCARBON, CONTACTING THE AQUEOUS SOLUTION WITH THE ORGANIC MIXTURE OBTAINED, AND SEPARATING AN AQUEOUS PHASE CONTAINING SAID RARE METAL VALVES FROM A SOLVENT EXTRACT PHASE CONTAINING SAID THORIAN VALUES.
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) | 1962-04-20 | 1962-10-20 | 1963-04-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-04-20 | 1966-10-20 | 1967-04-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-04-20 | 1970-10-20 | 1971-04-21 | $7700.00 | Window Closed / Lapsed |