Patent US2894804A successfully refreshed from Google Patents.
US2894804A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of extracting uranium and radium from ores
Assignee: Individual
•
Filing: 1949-03-02
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Granted: 1959-07-14
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Expires: 1969-03-02
Abstract
No abstract record available.
Inventors
- 👤 Carl W Sawyer
- 👤 Mabel P Handley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 10:04
CPC Classifications
C; C22; C22B; C22B60/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
46 words
A PROCESS OF RECOVERING URANIUM VALUES FROM A URANIUM ORE WHICH COMPRISES LEACHING THE ORE WITH A FERRIC CHLORIDE SOLUTION; SEPARATING THE LEACHING SOLUTION FROM THE ORE RESIDUE AND PRECIPITATING THE URANIUM PRESENT IN THE FILTRATE BY ADDING A URANIUM PRECIPITANT TO THE SEPARATED LEACHING SOLUTION.
Claim 2
Dependent Claim
46 words
A PROCESS OF RECOVERING URANIUM VALUES FROM A URANIUM ORE WHICH COMPRISES LEACHING THE ORE WITH A FERRIC CHLORIDE SOLUTION; SEPARATING THE LEACHING SOLUTION FROM THE ORE RESIDUE AND PRECIPITATING THE URANIUM PRESENT IN THE FILTRATE BY ADDING A URANIUM PRECIPITANT TO THE SEPARATED LEACHING SOLUTION.
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) | 1962-07-13 | 1963-01-12 | 1963-07-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-07-13 | 1967-01-12 | 1967-07-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-07-13 | 1971-01-12 | 1971-07-14 | $7700.00 | Window Closed / Lapsed |