Patent US2934403A successfully refreshed from Google Patents.
US2934403A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Recovery of americium
Assignee: Individual
•
Filing: 1950-07-18
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Granted: 1960-04-26
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Expires: 1970-07-18
Abstract
No abstract record available.
Inventors
- 👤 Ader Milton
- 👤 Herbert H Hyman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 15:15
CPC Classifications
C; C01; C01G; C01G56/00; C01G56/001
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
104 words
A PROCESS FOR RECOVERY AND CONCENTRATION OF AMERICIUM IN AN AQUEOUS MINERAL ACID SOLUTION CONTAINING AMERICIUM SALT AND SALT PLUTONIUM IN AT LEAST ITS TETRAVALENT STATE, COMPRISING CONTACTING SAID SOLUTION WITH A SUBSTANTIALLY WATER-IMMISCIBLE ORGANIC SOLVENT WHEREBY SAID PLUTONIUM SALT IS EXTRACTED INTO AN ORGANIC SOLVENT PHASE WHILE THE AMERICIUM SALT REMAINS IN THE AQUEOUS SOLUTION FORMING A SEPARATE PHASE, SEPARATING SAID AQUEOUS PHASE FROM SAID SOLVENT PHASE, ADDING A WATER-SOLUBLE FERRIC SALT TO SAID AQUEOUS PHASE, ADDING AN ALKALI METAL HYDROXIDE TO SAID AQUEOUS PHASE WHEREBY FERRIC HYDROXIDE PRECIPITATES CARRYING THE AMERICIUM VALUES, AND SEPARATING THE CARRIER PRECIPITATE THUS FORMED FROM THE SOLUTION.
Claim 2
Dependent Claim
104 words
A PROCESS FOR RECOVERY AND CONCENTRATION OF AMERICIUM IN AN AQUEOUS MINERAL ACID SOLUTION CONTAINING AMERICIUM SALT AND SALT PLUTONIUM IN AT LEAST ITS TETRAVALENT STATE, COMPRISING CONTACTING SAID SOLUTION WITH A SUBSTANTIALLY WATER-IMMISCIBLE ORGANIC SOLVENT WHEREBY SAID PLUTONIUM SALT IS EXTRACTED INTO AN ORGANIC SOLVENT PHASE WHILE THE AMERICIUM SALT REMAINS IN THE AQUEOUS SOLUTION FORMING A SEPARATE PHASE, SEPARATING SAID AQUEOUS PHASE FROM SAID SOLVENT PHASE, ADDING A WATER-SOLUBLE FERRIC SALT TO SAID AQUEOUS PHASE, ADDING AN ALKALI METAL HYDROXIDE TO SAID AQUEOUS PHASE WHEREBY FERRIC HYDROXIDE PRECIPITATES CARRYING THE AMERICIUM VALUES, AND SEPARATING THE CARRIER PRECIPITATE THUS FORMED FROM THE SOLUTION.
References Cited (Backward Citations)
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Cited
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Cited
US2227833A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-04-26 | 1963-10-26 | 1964-04-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-04-26 | 1967-10-26 | 1968-04-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-04-26 | 1971-10-26 | 1972-04-26 | $7700.00 | Window Closed / Lapsed |