Patent US2900229A successfully refreshed from Google Patents.
US2900229A
Expired / Lapsed
US
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Uranium leaching and recovery process
Assignee: Individual
•
Filing: 1956-08-10
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Granted: 1959-08-18
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Expires: 1976-08-10
Abstract
No abstract record available.
Inventors
- 👤 Leslie A Mcclaine
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 23:30
CPC Classifications
C; C22; C22B; C22B60/00; C22B60/02; C22B60/0204; C22B60/0217; C22B60/0221; C22B60/0247; C01; C01G; C01G43/00; C01G43/01; C01P; C01P2006/00; C01P2006/60
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
52 words
IN A PROCESS FOR RECOVERING HEXAVALENT URANIUM VALUES FROM A CARBONATE SOLUTION, THE STEPS COMPRISING INTRODUCING TETRAVALENT URANIUM CARBONATE COMPLEX ION INTO SAID SOLUTION, AND THEN ELEVATING THE BASICITY OF SAID SOLUTION TO A PH VALUE OF ABOVE ABOUT 13, WHEREBY THE URANIUM PRECIPITATES AS A HYDROUS OXIDE OF MIXED VALENCE STATE.
Claim 2
Dependent Claim
52 words
IN A PROCESS FOR RECOVERING HEXAVALENT URANIUM VALUES FROM A CARBONATE SOLUTION, THE STEPS COMPRISING INTRODUCING TETRAVALENT URANIUM CARBONATE COMPLEX ION INTO SAID SOLUTION, AND THEN ELEVATING THE BASICITY OF SAID SOLUTION TO A PH VALUE OF ABOVE ABOUT 13, WHEREBY THE URANIUM PRECIPITATES AS A HYDROUS OXIDE OF MIXED VALENCE STATE.
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) | 1962-08-17 | 1963-02-16 | 1963-08-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-08-17 | 1967-02-16 | 1967-08-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-08-17 | 1971-02-16 | 1971-08-18 | $7700.00 | Window Closed / Lapsed |