Patent US2770520A successfully refreshed from Google Patents.
US2770520A
Expired / Lapsed
US
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Recovery of uranium from phosphoric acid and phosphate solutions by ion exchange
Assignee: Individual
•
Filing: 1950-04-11
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Granted: 1956-11-13
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Expires: 1970-04-11
Abstract
No abstract record available.
Inventors
- 👤 Ray S Long
- 👤 Richard H Bailes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 18:11
CPC Classifications
B; B01; B01J; B01J41/00; C; C22; C22B; C22B60/00; C22B60/02; C22B60/0204; C22B60/0217; C22B60/0252; C22B60/0265
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
67 words
IN A METHOD FOR RECOVERING URANIUM VALUES FROM A PHOSPHORIC ACID SOLUTION, THE STEPS COMPRISING OXIDIZING SAID URANIUM IN SOLUTION TO THE VI OXIDATION STATE, WHEREBY URANYL PHOSPHATE COMPLEX ANIONS ARE FORMED THEREIN, CONTACTING THE OXIDIZED SOLUTION WITH AN ANIONIC EXCHANGE RESIN TO ADSORB SAID URANYL COMPLEX ANIONS THEREON, AND THEN ELUTING ADSORBED URANIUM FROM SAID EXCHANGE RESIN WITH AN ACIDIC SOLUTION AND AN ADJUNCT REDUCING AGENT.
Claim 2
Dependent Claim
67 words
IN A METHOD FOR RECOVERING URANIUM VALUES FROM A PHOSPHORIC ACID SOLUTION, THE STEPS COMPRISING OXIDIZING SAID URANIUM IN SOLUTION TO THE VI OXIDATION STATE, WHEREBY URANYL PHOSPHATE COMPLEX ANIONS ARE FORMED THEREIN, CONTACTING THE OXIDIZED SOLUTION WITH AN ANIONIC EXCHANGE RESIN TO ADSORB SAID URANYL COMPLEX ANIONS THEREON, AND THEN ELUTING ADSORBED URANIUM FROM SAID EXCHANGE RESIN WITH AN ACIDIC SOLUTION AND AN ADJUNCT REDUCING AGENT.
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) | 1959-11-13 | 1960-05-14 | 1960-11-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-11-13 | 1964-05-14 | 1964-11-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-11-13 | 1968-05-14 | 1968-11-13 | $7700.00 | Window Closed / Lapsed |