US2797143A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Uranium-vanadium recovery and separation by phosphate precipitation
Assignee: Individual
•
Filing: 1950-11-29
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Granted: 1957-06-25
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Expires: 1970-11-29
Abstract
No abstract record available.
Inventors
- 👤 William F Arendale
- 👤 Charles F Coleman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 13:50
CPC Classifications
C; C22; C22B; C22B60/00; C22B60/02; C22B60/0204; C22B60/0217; C22B60/0252; C22B60/0278; Y; Y10; Y10S; Y10S210/00; Y10S210/902; Y10S210/911; Y10S210/912
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
91 words
A PROCESS FOR RECOVERING URANIUM AND VANADIUM FROM AN AQUEOUS SOLUTION CONTAINING URANIUM, VANADIUM AND EXTRANEOUS IMPURITIES WHICH COMPRISES REDUCING SAID SOLUTION UNTIL SUBSTANTIALLY ALL THE YRANIUM ANS VANADIUM ARE REDUCED TO U+4 AND V+3, ADDING SUFFICIENT PHOSPATE IONS TO THE REDUCED SOLUTION AT A PH OF 1.0 TO 1.5 TO PRECIPIATE SUBSTANTIALLY ALL THE URANIUM, SEPARATING THE RESULTING URANIUM PRECIPITATE, ADDING SUFFICIENT PHOSPHATE IONS TO THE SUPERNATANT FROM SAID SEPARATION AT A PH OF 2.5 TO 3.1 TO PRECIPITATE SUBSTANTIALLY ALL OF THE VANADIUM AND SEPARATING THE RESULTING VANADIUM PRECIPIATE.
Claim 2
Dependent Claim
91 words
A PROCESS FOR RECOVERING URANIUM AND VANADIUM FROM AN AQUEOUS SOLUTION CONTAINING URANIUM, VANADIUM AND EXTRANEOUS IMPURITIES WHICH COMPRISES REDUCING SAID SOLUTION UNTIL SUBSTANTIALLY ALL THE YRANIUM ANS VANADIUM ARE REDUCED TO U+4 AND V+3, ADDING SUFFICIENT PHOSPATE IONS TO THE REDUCED SOLUTION AT A PH OF 1.0 TO 1.5 TO PRECIPIATE SUBSTANTIALLY ALL THE URANIUM, SEPARATING THE RESULTING URANIUM PRECIPITATE, ADDING SUFFICIENT PHOSPHATE IONS TO THE SUPERNATANT FROM SAID SEPARATION AT A PH OF 2.5 TO 3.1 TO PRECIPITATE SUBSTANTIALLY ALL OF THE VANADIUM AND SEPARATING THE RESULTING VANADIUM PRECIPIATE.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-06-24 | 1960-12-24 | 1961-06-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-06-24 | 1964-12-24 | 1965-06-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-06-24 | 1968-12-24 | 1969-06-25 | $7700.00 | Window Closed / Lapsed |