US2771340A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Improved uranium recovery and purification processes
Assignee: Individual
•
Filing: 1944-06-27
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Granted: 1956-11-20
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Expires: 1964-06-27
Abstract
No abstract record available.
Inventors
- 👤 Martin D Kamen
- 👤 Jr Abel De Haan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 09:57
CPC Classifications
C; C22; C22B; C22B60/00; C22B60/02; C22B60/0204; C22B60/0217; C22B60/0221; C22B60/0226; C22B60/023; C22B60/0252; C22B60/0278
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
115 words
THE PROCESS FOR RECOVERING METALLIC URANIUM ISOTOPE 235 VALUES FROM DEPOSITS FORMED WITH A METAL SURFACE CONTAINING METALS OF THE GROUP CONSISTING OF IRON, CHROMIUM, NICKEL AND COPPER, COMPRISING WASHING SAID SURFACE WITH AN AQUEOUS SOLUTION CONTAINING ABOUT 2% OF HCL AND ABOUT 0.5% OF H2O2 TO PRODUCE AN ACIDIC CHLORIDE SOLUTION CONTAINING URANYL IONS AND THE IONS OF SAID METALS AS IMPURITIES, ADJUSTING THE HYDROGEN ION CONTAIN OF THE SOLUTION TO THE RANGE 1N TO 3N, TREATING SAID SOLUTION TO REDUCE THE URANYL IONS TO THE URANOUS STATE, TREATING THE REDUCED SOLUTION WITH OXALIC ACID TO PRECIPITATE URANOUS OXALATE AWAY FOR THE IMPURITIES IN THE SOLUTION, AND SEPARATING SAID URANOUS OXALATE FROM THE 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) | 1959-11-20 | 1960-05-21 | 1960-11-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-11-20 | 1964-05-21 | 1964-11-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-11-20 | 1968-05-21 | 1968-11-20 | $7700.00 | Window Closed / Lapsed |