Patent US2885258A successfully refreshed from Google Patents.
US2885258A
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Recovery of uranium from dilute uranium-containing solutions
Assignee: Amherst College
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Filing: 1953-10-22
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Granted: 1959-05-05
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Expires: 1973-10-22
Abstract
No abstract record available.
Inventors
- 👤 George W Bain
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 16:56
CPC Classifications
C; C22; C22B; C22B60/00; C22B60/02; C22B60/0204; C22B60/0217; C22B60/0252; C22B60/0278
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
109 words
THE METHOD OF QUANTITATIVELY RECOVERING URANIUM FROM SULPHURIC ACID LEACH SOLUTIONS OF URANIUM-CONTAINING ORES CONTAINING SOLUBLE URANYL SULPHATE COMPRISING PERCOLATING THE URANYL SULPHATE SOLUTION AT ACID PH THROUGH A CONFINED PULVERULENT BED OF ANIMAL BONE PULVERIZED TO PERCOLANT SIZE AND DEPLETING THE URANIUM CONTENT OF SAIDSOLUTION, BY ACCUMULATION OF URANIUM ON SAID BONE IN THE FORM OF INSOLUBILIZED URANYL PHOSPHATE TO A VALUE OF LESS THAN ONE PART PER MILLION OR LESS THAN 15% OF ITS ORINGINAL CONTENT, WHICHEVER VALUE IS LOWER, UPON EMERGENCE FROM SAID BED, AND CONTINUING TO FEED SAID SOLUTION TO AND THROUGH SAID BED UNTIL THE BONE CONTAINS A URANIUM CONTENT EXCEEDING 10% BY WEIGHT.
References Cited (Backward Citations)
US1070313A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-05-04 | 1962-11-03 | 1963-05-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-05-04 | 1966-11-03 | 1967-05-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-05-04 | 1970-11-03 | 1971-05-05 | $7700.00 | Window Closed / Lapsed |