US2795480A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Recovery of uranium from aqueous phosphate containing solutions
Assignee: Individual
•
Filing: 1951-08-03
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Granted: 1957-06-11
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Expires: 1971-08-03
Abstract
No abstract record available.
Inventors
- 👤 Elmer F Stephan
- 👤 Garson A Lutz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 15:43
CPC Classifications
C; C22; C22B; C22B60/00; C22B60/02; C22B60/0204; C22B60/0217; C22B60/0252; C22B60/0265; Y; Y10; Y10S; Y10S210/00; Y10S210/902; Y10S210/911; Y10S210/912
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
73 words
THE METHOD OF RECOVERING URANIUM VALUES FROM A PHOSPHATE SOLUTION,M WHICH COMPRISES PASSING A PHOSPHATE SOLUTION HAVING A PH OF BETWEEN 0.00 AND 3.00 AND A URANIUM CONCENTRADTION OF BETWEEN 10 AND 150 MG. OF URANIUM PER LITER OF SOLUTION THROUGH A COLUMN CONTAINING A NUCLEAR SULFONIC TYPE CATION EXCHANGE RESIN AND THEN PASSING THE EFFLUENT FROM SAID CATION EXCHANGE RESIN COLUMN THROUGH A COLUMN CONTAINING AN INTERMEDIATE BASE TYPE ANION EXCHANGE RESIN.
Claim 2
Independent Claim
73 words
THE METHOD OF RECOVERING URANIUM VALUES FROM A PHOSPHATE SOLUTION,M WHICH COMPRISES PASSING A PHOSPHATE SOLUTION HAVING A PH OF BETWEEN 0.00 AND 3.00 AND A URANIUM CONCENTRADTION OF BETWEEN 10 AND 150 MG. OF URANIUM PER LITER OF SOLUTION THROUGH A COLUMN CONTAINING A NUCLEAR SULFONIC TYPE CATION EXCHANGE RESIN AND THEN PASSING THE EFFLUENT FROM SAID CATION EXCHANGE RESIN COLUMN THROUGH A COLUMN CONTAINING AN INTERMEDIATE BASE TYPE ANION EXCHANGE RESIN.
References Cited (Backward Citations)
FR946315A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-06-10 | 1960-12-10 | 1961-06-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-06-10 | 1964-12-10 | 1965-06-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-06-10 | 1968-12-10 | 1969-06-11 | $7700.00 | Window Closed / Lapsed |