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Patent US2841468A successfully refreshed from Google Patents.
US2841468A
Expired / Lapsed
US
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Recovery of uranium from carbonate leach liquors
Assignee: Individual
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Filing: 1957-06-14
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Granted: 1958-07-01
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Expires: 1977-06-14
Abstract
No abstract record available.
Inventors
- 👤 Henry F Wilson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 15:58
CPC Classifications
C; C22; C22B; C22B60/00; C22B60/02; C22B60/0204; C22B60/0217; C22B60/0252; C22B60/0265; C22B60/0221; C22B60/0247
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
109 words
A PROCESS OF SELECTIVELY RECOVERING URANIUM VALUES FROM A VANADIFEROUS URANIUM ORE WHICH COMPRISES LEACHING SAID ORE WITH AN AQUEOUS SOLUTION OF AN ALKALI METAL CARBONATE TO OBTAIN A PREGNANT LEACH LIQUOR CONTAINING DISSOLVED URANIUM AND VANADIUM VALUES AND HAVING A PH OF LESS THAN 10, ADJUSTING THE PH OF SAID LEACH LIQUOR TO LIE WITHIN THE RANGE OF 10.8 TO 11.8 BY THE ADDITION OF AN ALKALI THERETO, THEN BRINGING THE LEACH LIQUOR INTO CONACT WITH A STRONG BASE ANION EXCHANGE RESIN WHEREBY THE URANIUM VALUES ARE ADSORBED THEREON WHILE THE VANADIUM VALUES LARGELY REMAIN IN SOLUTION, AND ELUTING THE ADSORBED URANIUM VALUES FROM SAID ANION EXCHANGE RESIN.
Claim 2
Dependent Claim
109 words
A PROCESS OF SELECTIVELY RECOVERING URANIUM VALUES FROM A VANADIFEROUS URANIUM ORE WHICH COMPRISES LEACHING SAID ORE WITH AN AQUEOUS SOLUTION OF AN ALKALI METAL CARBONATE TO OBTAIN A PREGNANT LEACH LIQUOR CONTAINING DISSOLVED URANIUM AND VANADIUM VALUES AND HAVING A PH OF LESS THAN 10, ADJUSTING THE PH OF SAID LEACH LIQUOR TO LIE WITHIN THE RANGE OF 10.8 TO 11.8 BY THE ADDITION OF AN ALKALI THERETO, THEN BRINGING THE LEACH LIQUOR INTO CONACT WITH A STRONG BASE ANION EXCHANGE RESIN WHEREBY THE URANIUM VALUES ARE ADSORBED THEREON WHILE THE VANADIUM VALUES LARGELY REMAIN IN SOLUTION, AND ELUTING THE ADSORBED URANIUM VALUES FROM SAID ANION EXCHANGE RESIN.
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) | 1961-06-30 | 1961-12-30 | 1962-07-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-06-30 | 1965-12-30 | 1966-07-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-06-30 | 1969-12-30 | 1970-07-01 | $7700.00 | Window Closed / Lapsed |