US3579311A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process and apparatus for producing uo2 powder
Assignee: General Electric Co
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Filing: 1968-04-25
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Granted: 1971-05-18
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Expires: 1988-04-25
Abstract
Abstract AN IMPROVED PROCESS AND APPARATUS FOR PREPARING ORANIUM DIOXIDE POWDER SUITABLE FOR USE IN THE FABRICATION OF FUEL FOR NUCLEAR REACTORS. IN A PROCESS COMPRISING STEPS OF HYDROLYZING URANIUM HEXAFLUORIDE TO FORM AN AQUEOUS ARANYL FLUORIDE SOLUTION, TREATING WITH AMMONIA TO PRECIPITATE AMMONIUM DIUANATE, DEWATERING AND DRYING THE PRECIPITATE, AND FINALLY CALCINING THE PRECIPITATE TO FORM URANIUM DIOXIDE, THE IMPROVEMENT WHEREIN THE PRECIPITIATE IS DEWATERED TO ABOUT 40% TO ABOUT 60% BY WEIGHT, PREFERABLY ABOUT 50% BY WEIGHT WATER AND IS THEREAFTER DIRECTLY CALCINECD. D R A W I N G
Inventors
- 👤 John J Mccoy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 16:32
CPC Classifications
C; C01; C01G; C01G43/00; C01G43/01; C01G43/025; C01P; C01P2004/00; C01P2004/51; C01P2004/60; C01P2004/61; C01P2006/00; C01P2006/80
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-05-17 | 1974-11-16 | 1975-05-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-17 | 1978-11-16 | 1979-05-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-17 | 1982-11-16 | 1983-05-18 | $7700.00 | Window Closed / Lapsed |