US2683655A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Separation of americium and curium from aqueous solutions
Assignee: United States Atomic Energy Commission
•
Filing: 1952-09-10
•
Granted: 1954-07-13
•
Expires: 1972-09-10
Abstract
No abstract record available.
Inventors
- 👤 Donald F Peppard
- 👤 Peter R Gray
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 15:08
CPC Classifications
C; C01; C01G; C01G56/00; C01G56/001
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
76 words
A PROCESS OF SEPARATING AMERICIUM AND CURIUM VALUES CONTAINED AS A MIXTURE IN A SOLUTION, COMPRISING CONTACTING AN AQUEOUS CONCENTRATED NITRIC ACID MEDIUM AND A SUBSTANTIALLY WATER-IMMISCIBLE ALKYL PHOSPHATE MEDIUM, AT LEAST ONE OF SAID MEDIA CONTAINING THE AMERICIUM AND CURIUM IN SOLUTION, WHEREBY SAID CURIUM VALUES ARE PREFERENTIALLY HELD BY SAID ALKYL PHOSPHATE MEDIUM WHILE SAID AMERICIUM VALUES ARE PREFERENTIALLY HELD BY SAID AQUEOUS MEDIUM, AND SEPARATING AN ALKYL PHOSPHATE PHASE FROM AN AQUEOUS PHASE.
Claim 2
Dependent Claim
76 words
A PROCESS OF SEPARATING AMERICIUM AND CURIUM VALUES CONTAINED AS A MIXTURE IN A SOLUTION, COMPRISING CONTACTING AN AQUEOUS CONCENTRATED NITRIC ACID MEDIUM AND A SUBSTANTIALLY WATER-IMMISCIBLE ALKYL PHOSPHATE MEDIUM, AT LEAST ONE OF SAID MEDIA CONTAINING THE AMERICIUM AND CURIUM IN SOLUTION, WHEREBY SAID CURIUM VALUES ARE PREFERENTIALLY HELD BY SAID ALKYL PHOSPHATE MEDIUM WHILE SAID AMERICIUM VALUES ARE PREFERENTIALLY HELD BY SAID AQUEOUS MEDIUM, AND SEPARATING AN ALKYL PHOSPHATE PHASE FROM AN AQUEOUS PHASE.
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) | 1957-07-12 | 1958-01-11 | 1958-07-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-07-12 | 1962-01-11 | 1962-07-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-07-12 | 1966-01-11 | 1966-07-13 | $7700.00 | Window Closed / Lapsed |