US2905524A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of separating uranium and thorium from each other
Assignee: Commissariat à l'Énergie Atomique et Aux Énergies Alternatives
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Filing: 1957-01-24
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Granted: 1959-09-22
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Expires: 1977-01-24
Abstract
No abstract record available.
Inventors
- 👤 Mahut Rene
- 👤 Muller Joseph
- 👤 Sauteron Jean
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 21:44
CPC Classifications
C; C22; C22B; C22B60/00; C22B60/02; C22B60/0204; C22B60/0217; C22B60/0252; C22B60/0278; C01; C01F; C01F15/00; C01G; C01G43/00; C22B60/0291
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
106 words
A METHOD OF SEPARATING URANIUM AND THORIUM FROM EACH OTHER, WHICH COMPRISES TREATING A RAW MATERIAL CONTAINING URANIUM AND THORIUM WITH NITRIC ACID, ADDING TO THE ACID SOLUTION THUS OBTAINED A SULFATE OF THE GROUP CONSISTING OF SODIUM SULFATE, MAGNESIUM SULFATE AND AMMONIUM SULFATE, THE NUMBER OF GRAM-MOLECULES OF SAID SULFATE THUS ADDED BEING AT LEAST EQUAL TO THE SUM OF THE NUMBERS OF GRAM-ATOMS OF URANIUM AND THORIUM PRESENT IN SAID SOLUTION, WARMING THE MIXED SOLUTION THUS FORMED, AND NEUTRALIZING IT TO A PH RANGING FROM 2.8 TO 5.2 WHEREBY THORIUM IS PRECIPITATED IN THE FORM OF BASIC THORIUM SULFATE, WHEREAS URANIUM REMAINS IN SOLUTION.
Claim 2
Independent Claim
106 words
A METHOD OF SEPARATING URANIUM AND THORIUM FROM EACH OTHER, WHICH COMPRISES TREATING A RAW MATERIAL CONTAINING URANIUM AND THORIUM WITH NITRIC ACID, ADDING TO THE ACID SOLUTION THUS OBTAINED A SULFATE OF THE GROUP CONSISTING OF SODIUM SULFATE, MAGNESIUM SULFATE AND AMMONIUM SULFATE, THE NUMBER OF GRAM-MOLECULES OF SAID SULFATE THUS ADDED BEING AT LEAST EQUAL TO THE SUM OF THE NUMBERS OF GRAM-ATOMS OF URANIUM AND THORIUM PRESENT IN SAID SOLUTION, WARMING THE MIXED SOLUTION THUS FORMED, AND NEUTRALIZING IT TO A PH RANGING FROM 2.8 TO 5.2 WHEREBY THORIUM IS PRECIPITATED IN THE FORM OF BASIC THORIUM SULFATE, WHEREAS URANIUM REMAINS IN SOLUTION.
References Cited (Backward Citations)
US1232334A
Cited
US1368243A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-09-21 | 1963-03-23 | 1963-09-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-09-21 | 1967-03-23 | 1967-09-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-09-21 | 1971-03-23 | 1971-09-22 | $7700.00 | Window Closed / Lapsed |