Patent US3949792A successfully refreshed from Google Patents.
Patent US2950951A successfully refreshed from Google Patents.
US2950951A
Expired / Lapsed
US
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Carbonate leach uranium milling process
Assignee: Phillips Petroleum Co
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Filing: 1958-07-28
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Granted: 1960-08-30
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Expires: 1978-07-28
Abstract
No abstract record available.
Inventors
- 👤 Fred T Sherk
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 22:43
CPC Classifications
C; C01; C01G; C01G43/00
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
121 words
IN A PROCESS FOR RECOVERING URANIUM FROM AN ORE WHICH COMPRISES OXIDIZING AN AQUEOUS SLURRY OF COMMINUTED ORE IN THE PRESENCE OF SODIUM CARBONATE AND SODIUM BICARBONATE TO FORM A PREGNANT SOLUTION CONTAINING DISSOLVED URANIUM, PRECIPITATING URANIUM AS SODIUM DIURANATE FROM THE PREGNANT SOLUTION BY ADDITION OF SODIUM HYDROXIDE, AND RECOVERING THE PRECIPITATED URANIUM, THE IMPROVEMENT WHICH COMPRISES FORMING A MORE CONCENTRATED PREGNANT SOLUTION BEFORE SAID PRECIPITATION BY SAID ADDITION OF SAID SODIUM HYDROXIDE BY A METHOD WHICH COMPRISES THE STEPS OF REACTING AN AQUEOUS SOLUTION CONTAINING SODIUM CARBONATE WITH LIME TO FORM A CALCIUM CARBONATE SLURRY CONTAINING SODIUM HYDROXIDE, ADMIXING SAID SLURRY AND SAID PREGNANT SOLUTION, THEREBY PRECIPITATING SODIUM DIURANATE THEREFROM, REMOVING AQUEOUS LIQUOR FROM SAID SLURRY AND THEREAFTER RECARBONATING
References Cited (Backward Citations)
US2199697A
Cited
US2830871A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-08-30 | 1964-02-29 | 1964-08-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-08-30 | 1968-02-29 | 1968-08-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-08-30 | 1972-02-29 | 1972-08-30 | $7700.00 | Window Closed / Lapsed |