Patent US2894805A successfully refreshed from Google Patents.
US2894805A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Separation process for actinide elements and compounds thereof
Assignee: Individual
•
Filing: 1949-12-06
•
Granted: 1959-07-14
•
Expires: 1969-12-06
Abstract
No abstract record available.
Inventors
- 👤 Louis B Werner
- 👤 Perlman Isadore
- 👤 Calvin Melvin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:06
CPC Classifications
C; C22; C22B; C22B60/00; C22B60/02; C22B60/0295
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
76 words
A PROCESS FOR THE SEPARATION OF AN ACTINIDE ELEMENT HAVING AN ATOMIC NUMBER OF AT LEAST 95 FROM ITS MIXTURE WITH LANTHANUM, WHICH COMPRISES CONTACTING AN ACIDIC AQUEOUS SOLUTION CONTAINING A LATHANUM SALT, A SALT OF THE ACITINIDE ELEMENT IN THE TRIVALENT STATE AND A STRONG INORGANIC ACID TO PROVIDE A PH FOR THE SOLUTION OF 2 TO 4.8 WITH A SOLUTION IN A SUBSTANTIALLY WATER-IMMISCIBLE ORGANIC SOLVENT OF A FLUORINATED B-DIKETONE HAVING THE GENERAL FORMULA:
Claim 2
Dependent Claim
76 words
A PROCESS FOR THE SEPARATION OF AN ACTINIDE ELEMENT HAVING AN ATOMIC NUMBER OF AT LEAST 95 FROM ITS MIXTURE WITH LANTHANUM, WHICH COMPRISES CONTACTING AN ACIDIC AQUEOUS SOLUTION CONTAINING A LATHANUM SALT, A SALT OF THE ACITINIDE ELEMENT IN THE TRIVALENT STATE AND A STRONG INORGANIC ACID TO PROVIDE A PH FOR THE SOLUTION OF 2 TO 4.8 WITH A SOLUTION IN A SUBSTANTIALLY WATER-IMMISCIBLE ORGANIC SOLVENT OF A FLUORINATED B-DIKETONE HAVING THE GENERAL FORMULA:
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-07-13 | 1963-01-12 | 1963-07-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-07-13 | 1967-01-12 | 1967-07-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-07-13 | 1971-01-12 | 1971-07-14 | $7700.00 | Window Closed / Lapsed |