Patent US2750254A successfully refreshed from Google Patents.
US2750254A
Expired / Lapsed
US
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Process of recovering uranium from its ores
Assignee: Individual
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Filing: 1949-11-16
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Granted: 1956-06-12
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Expires: 1969-11-16
Abstract
No abstract record available.
Inventors
- 👤 Robert A Blake
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 18:14
CPC Classifications
C; C22; C22B; C22B60/00; C22B60/02; C22B60/0204; C22B60/0217; C22B60/0221; C22B60/0226; C22B60/0234; B; B03; B03D; B03D1/00; B03D1/02; C22B60/0252; C22B60/0278
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
56 words
A PROCESS FOR EXTRACTING URANIUM FROM A CORE THEREOF WHICH COMPRISES LEACHING SAID ORE WITH AN ACID, PRECIPITATING THE URANIUM DISSOLVED BY SAID ACID WITH A SULFIDE SELECTED FROM THE GROUP CONSISTING OF ALKALI METAL SULFIDES, ALKALI METAL HYDROSULFIDES AND HYDROGEN SULFIDE, AND THEN SEPARATING THE PRECIPITATED URANIUM FROM THE REST OF THE ORE BY FLOTATION.
Claim 2
Dependent Claim
56 words
A PROCESS FOR EXTRACTING URANIUM FROM A CORE THEREOF WHICH COMPRISES LEACHING SAID ORE WITH AN ACID, PRECIPITATING THE URANIUM DISSOLVED BY SAID ACID WITH A SULFIDE SELECTED FROM THE GROUP CONSISTING OF ALKALI METAL SULFIDES, ALKALI METAL HYDROSULFIDES AND HYDROGEN SULFIDE, AND THEN SEPARATING THE PRECIPITATED URANIUM FROM THE REST OF THE ORE BY FLOTATION.
References Cited (Backward Citations)
US2000656A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-06-12 | 1959-12-12 | 1960-06-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-06-12 | 1963-12-12 | 1964-06-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-06-12 | 1967-12-12 | 1968-06-12 | $7700.00 | Window Closed / Lapsed |