US2864664A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Separation of uranium, plutonium, and fission products
Assignee: Individual
•
Filing: 1949-03-01
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Granted: 1958-12-16
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Expires: 1969-03-01
Abstract
No abstract record available.
Inventors
- 👤 Spence Robert
- 👤 Lister Maurice Wolfenden
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 20:53
CPC Classifications
C; C22; C22B; C22B60/00; C22B60/02; C22B60/04; C01; C01G; C01G56/00; C01G56/001; C01G56/002; C22B60/0204; C22B60/0217; C22B60/0252; C22B60/026; C22B60/0278
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
105 words
IN A METHOD FOR RECOVERY OF URANIUM AND PLUTONIUM IN ACIDIC AQUEOUS NITRATE SOLUTIONS CONTAINING FISSION PRODUCTS THE STEPS COMPRISING ESSENTIALLY SATURATING THE SOLUTION WITH A NITRATE SALT, RENDERING THE SOLUTION SUBSTANTIALLY STOICHIOMETRICALLY NEUTRAL WITH A BASE, ADDING A REDUCING AGENT TO CHANGE THE PLUTONIUM TO THE TRIVALENT STATE, EXTRACTING THE URANIUM FROM THE SOLUTION INTO AN ORGANIC SOLVENT THEREFOR, REMOVING THE SOLVENT WITH THE URANIUM, MAKING THE RESIDUAL AQUEOUS SOLUTION ACID WITH NITRIC ACID, ADDING AN OXIDIZING AGENT TO CHANGE THE PLUTONIUM TO HIGHER THAN THE TETRAVALENT STTE AND ADDING ORGANIC SOLVENT TO EXTRACT THE PLUTONIUM AND SEPARATING THE ORGANIC SOLVENT WITH THE PLUTONIUM.
References Cited (Backward Citations)
US2227833A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-12-15 | 1962-06-16 | 1962-12-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-12-15 | 1966-06-16 | 1966-12-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-12-15 | 1970-06-16 | 1970-12-16 | $7700.00 | Window Closed / Lapsed |