Patent US3089751A successfully refreshed from Google Patents.
US3089751A
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US
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Selective separation of uranium from ferritic stainless steels
Assignee: Individual
•
Filing: 1960-11-25
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Granted: 1963-05-14
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Expires: 1980-11-25
Abstract
No abstract record available.
Inventors
- 👤 Richard J Beaver
- 👤 Julian H Cherubini
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 10:35
CPC Classifications
C; C22; C22B; C22B60/00; C22B60/02; C22B60/0204; C22B60/0217; C22B60/0221; C22B60/0226; C22B60/0239; G; G21; G21C; G21C19/00; G21C19/34; G21C19/38; G21C19/42; G21C19/44; G21C19/46; Y; Y02; Y02E; Y02E30/00; Y02E30/30; Y02W; Y02W30/00; Y02W30/50
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
111 words
IN A PROCESS FOR THE SELECTIVE SEPARATION OF URANIUM FROM A NUCLEAR FUEL ELEMENT COMPRISING A URANIUM-CONTAINING CORE PORTION AND A CLAD OF A FERRITIC STAINLESS STEEL, THE STEPS WHICH COMPRISE HEATING SAID ELEMENT, IN A NONCARBURZING ATMOSPHERE TO A TEMPERATUTE IN THE RANGE 850-1050*C., MAINTAINING SAID ELEMENT AT TEMPERATURE FOR A PERIOD OF AT LEAST 15 MINUTES, RAPIDLY COOLING SAID HEATED ELEMENT THROUGH THE TEMPERATURE RANGE 815*C. TO 650* C. TO AVOID AMEALING SAID STTTL, CONTACTING SAID COOLED ELEMENT WITH AN AQUEOUS NITRATE SOLUTION UNTIL SUBSTANTIALLY ALL OF THE URANIUM VALUES HAVE BEEN SELECTIVELY DISSOLVED THEREIN, AND THEREAFTER SEPARATING THE RESULTANT URANY NITRATE SOLUTION FROM THE REMAINDER OF SAID ELEMEMT.
Claim 2
Dependent Claim
111 words
IN A PROCESS FOR THE SELECTIVE SEPARATION OF URANIUM FROM A NUCLEAR FUEL ELEMENT COMPRISING A URANIUM-CONTAINING CORE PORTION AND A CLAD OF A FERRITIC STAINLESS STEEL, THE STEPS WHICH COMPRISE HEATING SAID ELEMENT, IN A NONCARBURZING ATMOSPHERE TO A TEMPERATUTE IN THE RANGE 850-1050*C., MAINTAINING SAID ELEMENT AT TEMPERATURE FOR A PERIOD OF AT LEAST 15 MINUTES, RAPIDLY COOLING SAID HEATED ELEMENT THROUGH THE TEMPERATURE RANGE 815*C. TO 650* C. TO AVOID AMEALING SAID STTTL, CONTACTING SAID COOLED ELEMENT WITH AN AQUEOUS NITRATE SOLUTION UNTIL SUBSTANTIALLY ALL OF THE URANIUM VALUES HAVE BEEN SELECTIVELY DISSOLVED THEREIN, AND THEREAFTER SEPARATING THE RESULTANT URANY NITRATE SOLUTION FROM THE REMAINDER OF SAID ELEMEMT.
References Cited (Backward Citations)
US1454464A
Cited
GB432548A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-05-13 | 1966-11-12 | 1967-05-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-05-13 | 1970-11-12 | 1971-05-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-05-13 | 1974-11-12 | 1975-05-14 | $7700.00 | Window Closed / Lapsed |