US3093452A
Expired / Lapsed
US
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Precipitation of zirconium and fluoride ions from solutions
Assignee: Individual
•
Filing: 1961-09-25
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Granted: 1963-06-11
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Expires: 1981-09-25
Abstract
No abstract record available.
Inventors
- 👤 Billie J Newby
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 21:07
CPC Classifications
C; C01; C01G; C01G43/00; G; G21; G21C; G21C19/00; 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
86 words
A PROCESS OF REMOVING ZIRCONIUM AND FLUORIDE IONS FROM AN AQUEOUS HYDROFLUORIC ACID SOLUTION OF ZIRCONIUM FLUORIDE AND HEXAVALENT URANIUM IN WHICH THE MOLE RATIO OF F-:ZR IS AT LEAST FIVE, SAID PROCESS COMPRISING ADDING AN AQUEOUS SOLUTION OF SODIUM FORMATE TO SAID SOLUTION IN A QUANTITY TO HAVE AT LEAST TWO MOLES OF SODIUM FORMATE PRESENT FOR EACH MOLE OF ZIRCONIUM WHEREBY THE ZIRCONIUM AND FLUORIDE IONS ARE PRECIPITATED ALONG WITH THE SODIUM WHILE URANIUM REMAINS IN SOLUTION, AND SEPARATING THE PRECIPITATE FROM THE SOLUTION.
Claim 2
Dependent Claim
86 words
A PROCESS OF REMOVING ZIRCONIUM AND FLUORIDE IONS FROM AN AQUEOUS HYDROFLUORIC ACID SOLUTION OF ZIRCONIUM FLUORIDE AND HEXAVALENT URANIUM IN WHICH THE MOLE RATIO OF F-:ZR IS AT LEAST FIVE, SAID PROCESS COMPRISING ADDING AN AQUEOUS SOLUTION OF SODIUM FORMATE TO SAID SOLUTION IN A QUANTITY TO HAVE AT LEAST TWO MOLES OF SODIUM FORMATE PRESENT FOR EACH MOLE OF ZIRCONIUM WHEREBY THE ZIRCONIUM AND FLUORIDE IONS ARE PRECIPITATED ALONG WITH THE SODIUM WHILE URANIUM REMAINS IN SOLUTION, AND SEPARATING THE PRECIPITATE FROM THE SOLUTION.
References Cited (Backward Citations)
US2820692A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-06-10 | 1966-12-10 | 1967-06-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-06-10 | 1970-12-10 | 1971-06-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-06-10 | 1974-12-10 | 1975-06-11 | $7700.00 | Window Closed / Lapsed |