Patent US3047601A successfully refreshed from Google Patents.
US3047601A
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Separation of thorium from rare earth values in aqueous acidic solution by solvent extraction with an alkyl phosphate-oxygen containing organic diluent
Assignee: Individual
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Filing: 1950-10-18
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Granted: 1962-07-31
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Expires: 1970-10-18
Abstract
No abstract record available.
Inventors
- 👤 Johnson Oliver
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 19:32
CPC Classifications
C; C01; C01F; C01F15/00; C01F17/00; C01F17/10; C01F17/17
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
78 words
A PROCESS FOR SEPARATING THORIUM VALUES FROM RARE EARTH METAL VALUES CONTAINED IN AQUEOUS SOLUTIONS, COMPRISING PROVIDING A MINERAL ACID CONTENT OF FROM 3 TO 7 N IN SAID SOLUTION, MIXING FROM 10 TO 25% BY VOLUME OF TRIBUTYL PHOSPHATE AND FROM 90 TO 75% BY VOLUME OF DIBUTYL ETHER, CONTAINING THE AQUEOUS SOLUTION WITH THE MIXTURE OBTAINED, AND SEPARATING AN AQUEOUS PHASE CONTAINING SAID RARE EARTH METAL VALUES FROM A SOLVENT EXTRACT PHASE CONTAINING SAID THORIUM VALUES.
Claim 2
Dependent Claim
78 words
A PROCESS FOR SEPARATING THORIUM VALUES FROM RARE EARTH METAL VALUES CONTAINED IN AQUEOUS SOLUTIONS, COMPRISING PROVIDING A MINERAL ACID CONTENT OF FROM 3 TO 7 N IN SAID SOLUTION, MIXING FROM 10 TO 25% BY VOLUME OF TRIBUTYL PHOSPHATE AND FROM 90 TO 75% BY VOLUME OF DIBUTYL ETHER, CONTAINING THE AQUEOUS SOLUTION WITH THE MIXTURE OBTAINED, AND SEPARATING AN AQUEOUS PHASE CONTAINING SAID RARE EARTH METAL VALUES FROM A SOLVENT EXTRACT PHASE CONTAINING SAID THORIUM VALUES.
References Cited (Backward Citations)
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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) | 1965-07-30 | 1966-01-29 | 1966-07-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-07-30 | 1970-01-29 | 1970-07-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-07-30 | 1974-01-29 | 1974-07-31 | $7700.00 | Window Closed / Lapsed |