Patent US3790658A successfully refreshed from Google Patents.
US3790658A
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US
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Purification process for recovering uranium from an acidic aqueous solution by ph control
Assignee: Umetco Minerals Corp
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Filing: 1970-05-15
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Granted: 1974-02-05
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Expires: 1990-05-15
Abstract
Abstract A PROCESS FOR OBTAINING PURIFIED URANIUM VALUES FROM AN ACIDIC AQUEOUS SOLUTION CONTAMINATED WITH IRON, VANADIUM, PHOSPHORUS AND SODIUM VALUES BY SELECTIVELY PRECIPITATING THE CONTAMINANTS THROUGH ACIDITY (PH) CONTROL OF THE SOLUTION.
Inventors
- 👤 J Fox
- 👤 J Koetting
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 15:25
CPC Classifications
C; C01; C01G; C01G43/00; C22; C22B; C22B60/00; C22B60/02; C22B60/0204; C22B60/0217; C22B60/0252; C22B60/0278; C22B60/0282
Claims Analysis
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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) | 1977-02-04 | 1977-08-06 | 1978-02-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-02-04 | 1981-08-06 | 1982-02-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-02-04 | 1985-08-06 | 1986-02-05 | $7700.00 | Window Closed / Lapsed |