US3336208A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrolytic dissolution of uranium fuel elements
Assignee: State of Israel
•
Filing: 1964-04-29
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Granted: 1967-08-15
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Expires: 1984-04-29
Abstract
No abstract record available.
Inventors
- 👤 Raviv Szmuel
- 👤 Levin Iddo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 19:55
CPC Classifications
G; G21; G21C; G21C19/00; G21C19/42; G21C19/44; G21C19/46; C; C25; C25C; C25C1/00; C25C1/22; G21C19/34; G21C19/38; Y; Y02; Y02E; Y02E30/00; Y02E30/30; Y02W; Y02W30/00; Y02W30/50
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
135 words
A PROCESS FOR THE DISSOLUTION OF AN URANIUM FUEL ELEMENT HAVING AN OUTER ENVELOPE OF ALUMINIUM, OR ALUMINIUM ALLOY, AND A CORE OF URANIUM OR A URANIUM ALLOY, COMPRISING THE STEPS OF ESTABLISHING AN ELECTROLYTIC CIRCUIT IN WHICH THE FUEL ELEMENTS IS THE POSITIVE ELECTRODE AND THE ELECTROLYTE IS AN AQUEOUS SODIUM OR POTASSIUM HYDROXIDE SOLUTION WHOSE CONCENTRATION DOES NOT EXCEED 15% BY WEIGHT INITIATING ELECTROLYTIC DISSOLUTION BY ESTABLISHING A POTENTIAL DIFFERENCE BETWEEN ANODE AND CATHODE THAT DOES NOT EXCEED 30 VOLTS, ALLOWING DISSOLUTION TO PROCEED AT THIS VOLTAGE FOR AS LONG AS A CURRENT FLOWS THROUGH THE SYSTEM, THEN EXCHANGING THE ALKALINE SOLUTION FOR AN AQUEOUS NITRIC ACID SOLUTION WHOSE CONCENTRATION IS SUCH THAT IT DOES NOT DISSOLVE THE CORE CHEMICALLY TO ANY SUBSTANTIAL EXTENT AND ELECTROLYTICALLY DISSOLVING THE CORE IN SAID NITRIC ACID.
Claim 2
Dependent Claim
135 words
A PROCESS FOR THE DISSOLUTION OF AN URANIUM FUEL ELEMENT HAVING AN OUTER ENVELOPE OF ALUMINIUM, OR ALUMINIUM ALLOY, AND A CORE OF URANIUM OR A URANIUM ALLOY, COMPRISING THE STEPS OF ESTABLISHING AN ELECTROLYTIC CIRCUIT IN WHICH THE FUEL ELEMENTS IS THE POSITIVE ELECTRODE AND THE ELECTROLYTE IS AN AQUEOUS SODIUM OR POTASSIUM HYDROXIDE SOLUTION WHOSE CONCENTRATION DOES NOT EXCEED 15% BY WEIGHT INITIATING ELECTROLYTIC DISSOLUTION BY ESTABLISHING A POTENTIAL DIFFERENCE BETWEEN ANODE AND CATHODE THAT DOES NOT EXCEED 30 VOLTS, ALLOWING DISSOLUTION TO PROCEED AT THIS VOLTAGE FOR AS LONG AS A CURRENT FLOWS THROUGH THE SYSTEM, THEN EXCHANGING THE ALKALINE SOLUTION FOR AN AQUEOUS NITRIC ACID SOLUTION WHOSE CONCENTRATION IS SUCH THAT IT DOES NOT DISSOLVE THE CORE CHEMICALLY TO ANY SUBSTANTIAL EXTENT AND ELECTROLYTICALLY DISSOLVING THE CORE IN SAID NITRIC ACID.
References Cited (Backward Citations)
US2120478A
Cited
US2370463A
Cited
US2446418A
Cited
US2841538A
Cited
US2834722A
Cited
US2766201A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-08-14 | 1971-02-13 | 1971-08-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-08-14 | 1975-02-13 | 1975-08-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-08-14 | 1979-02-13 | 1979-08-15 | $7700.00 | Window Closed / Lapsed |