US2902339A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Recovery of plutonium from aqueous solutions
Assignee: Individual
•
Filing: 1952-06-25
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Granted: 1959-09-01
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Expires: 1972-06-25
Abstract
No abstract record available.
Inventors
- 👤 Elwood J Reber
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 10:09
CPC Classifications
C; C01; C01G; C01G56/00; C01G56/001; C01G56/002; G; G21; G21C; G21C19/00; G21C19/42; G21C19/44; G21C19/46; Y; Y02; Y02E; Y02E30/00; Y02E30/30; Y02W; Y02W30/00; Y02W30/50
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
89 words
A PROCESS FOR RECOVERING PLUTONIUM VALUES FROM AQUEOUS SOLUTIONS BY PRECIPITATION ON BISMUTH PHOSPHATE, COMPRISING SECURING THE PLUTONIUM IN ITS TETRAVALENT STATE; ADDED A BISMUTH SALT TO SAID SOLUTION; ADDING AN EXCESS OF PHOSPHORIC ACID ANIONS TO SAID SOLUTION IN TWO APPROXIMATELY EQUAL INSTALLMENTS, THE RATE OF ADDITION OF THE FIRST INSTALLMENT BEING ABOUT TWO TO THREE TIMES AS HIGH AS THE RATE OF ADDITION OF THE SECOND INSTALLMENT, WHEREBY A PRECIPITATE OF BISMUTH PHOSPHATE FORMS, SAID PRECIPITATE CARRYING THE PLUTONIUM VALUES; AND SEPARATING THE PRECIPITATE FROM THE SOLUTION.
Claim 2
Dependent Claim
89 words
A PROCESS FOR RECOVERING PLUTONIUM VALUES FROM AQUEOUS SOLUTIONS BY PRECIPITATION ON BISMUTH PHOSPHATE, COMPRISING SECURING THE PLUTONIUM IN ITS TETRAVALENT STATE; ADDED A BISMUTH SALT TO SAID SOLUTION; ADDING AN EXCESS OF PHOSPHORIC ACID ANIONS TO SAID SOLUTION IN TWO APPROXIMATELY EQUAL INSTALLMENTS, THE RATE OF ADDITION OF THE FIRST INSTALLMENT BEING ABOUT TWO TO THREE TIMES AS HIGH AS THE RATE OF ADDITION OF THE SECOND INSTALLMENT, WHEREBY A PRECIPITATE OF BISMUTH PHOSPHATE FORMS, SAID PRECIPITATE CARRYING THE PLUTONIUM VALUES; AND SEPARATING THE PRECIPITATE FROM THE SOLUTION.
References Cited (Backward Citations)
US2785951A
Cited
US2799533A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-08-31 | 1963-03-02 | 1963-09-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-08-31 | 1967-03-02 | 1967-09-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-08-31 | 1971-03-02 | 1971-09-01 | $7700.00 | Window Closed / Lapsed |