Patent US3034854A successfully refreshed from Google Patents.
US3034854A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Separation of californium from curium by solvent extraction
Assignee: Individual
•
Filing: 1960-07-20
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Granted: 1962-05-15
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Expires: 1980-07-20
Abstract
No abstract record available.
Inventors
- 👤 Donald F Peppard
- 👤 George W Mason
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 14:12
CPC Classifications
C; C01; C01G; C01G56/00; C01G56/001; C22; C22B; C22B60/00; C22B60/02; C22B60/0295
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
122 words
A PROCESS OF SEPARATING CALIFORNIUM VALUES FROM CURIUM VALUES PRESENT TOGETHER IN AN AQUEOUS HYDROCHLORIC ACID SOLUTION IN THEIR TRIVALENT STATE OF OXIDATION, COMPRISING ADJUSTING THE ACIDITY OF SAID AQUEOUS SOLUTION TO BETWEEN 0.01 AND 1 M, CONTACTING SAID AQUEOUS SOLUTION WITH AN ORGANIC EXTRACTANT, SAID EXTRACTANT CONSISTING OF A SOLUTION OF AN ACIDIC SUBSTANTIALLY WATERIMMISCIBLE ESTER SELECTED FROM THE GROUP CONSISTING OF 2-ETHYL HEXYL HYDROGEN MONOCHLOROMETHYL PHOSPHONATE AND 2-ETHYL HEXYL HYDROGEN PHENYL PHOSPHONATE INN TOLUENE, THE CONCENTRATION OF THE PHOSPHONATE IN SAID SOLUTION BEING BETWEEN 0.001 AND 1.5 F, WHEREBY SAID CALIFORNIUM VALUES ARE PREFERENTIALLY TAKEN UP BY AN ORGANIC EXTRACT PHASE WHILE SAID CURIUM VALUES PREFERENTIALLY REMAIN IN AN AQUEOUS RAFFINATE, AND SEPARATING SAID ORGANIC PHASE FROM SAID AQUEOUS RAFFINATE.
Claim 2
Dependent Claim
122 words
A PROCESS OF SEPARATING CALIFORNIUM VALUES FROM CURIUM VALUES PRESENT TOGETHER IN AN AQUEOUS HYDROCHLORIC ACID SOLUTION IN THEIR TRIVALENT STATE OF OXIDATION, COMPRISING ADJUSTING THE ACIDITY OF SAID AQUEOUS SOLUTION TO BETWEEN 0.01 AND 1 M, CONTACTING SAID AQUEOUS SOLUTION WITH AN ORGANIC EXTRACTANT, SAID EXTRACTANT CONSISTING OF A SOLUTION OF AN ACIDIC SUBSTANTIALLY WATERIMMISCIBLE ESTER SELECTED FROM THE GROUP CONSISTING OF 2-ETHYL HEXYL HYDROGEN MONOCHLOROMETHYL PHOSPHONATE AND 2-ETHYL HEXYL HYDROGEN PHENYL PHOSPHONATE INN TOLUENE, THE CONCENTRATION OF THE PHOSPHONATE IN SAID SOLUTION BEING BETWEEN 0.001 AND 1.5 F, WHEREBY SAID CALIFORNIUM VALUES ARE PREFERENTIALLY TAKEN UP BY AN ORGANIC EXTRACT PHASE WHILE SAID CURIUM VALUES PREFERENTIALLY REMAIN IN AN AQUEOUS RAFFINATE, AND SEPARATING SAID ORGANIC PHASE FROM SAID AQUEOUS RAFFINATE.
References Cited (Backward Citations)
US2859095A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-05-14 | 1965-11-13 | 1966-05-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-05-14 | 1969-11-13 | 1970-05-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-05-14 | 1973-11-13 | 1974-05-15 | $7700.00 | Window Closed / Lapsed |