US3551119A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Precipitation method of recovering element 95 from contaminants
Assignee: United States Atomic Energy Commission
•
Filing: 1946-08-23
•
Granted: 1970-12-29
•
Expires: 1966-08-23
Abstract
No abstract record available.
Inventors
- 👤 Louis B Werner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 12:22
CPC Classifications
C; C01; C01G; C01G56/00; C01G56/007; C01G56/009
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
82 words
THE METHOD OF SEPARATING ELEMENT 95 FROM IRON, WHICH COMPRISES FORMING AN AQUEOUS ACIDIC SOLUTION CONTAINING IONS OF SAID ELEMENTS, RENDERING SAID SOLUTION APPROXIMATELY 1 M WITH RESPECT TO POTASSIUM IONS AND WITH RESPECT TO HYDROFLUORIC ACID, RECOVERING THE PRECIPITATE THUS FORMED AND HEATING THE SAME IN THE PRESENCE OF SULFURIC ACID, DISSOLVING THE RESULTING SOLID IN WATER, AND THEREAFTER CONTACTING THE SOLUTION WITH HYDROXIDE IONS WHEREBY ELEMENT 95 IS PRECIPITATED IN A SUBSTANTIALLY IRON-FREE STATE IN THE FORM OF ITS HYDROXIDE.
Claim 2
Independent Claim
82 words
THE METHOD OF SEPARATING ELEMENT 95 FROM IRON, WHICH COMPRISES FORMING AN AQUEOUS ACIDIC SOLUTION CONTAINING IONS OF SAID ELEMENTS, RENDERING SAID SOLUTION APPROXIMATELY 1 M WITH RESPECT TO POTASSIUM IONS AND WITH RESPECT TO HYDROFLUORIC ACID, RECOVERING THE PRECIPITATE THUS FORMED AND HEATING THE SAME IN THE PRESENCE OF SULFURIC ACID, DISSOLVING THE RESULTING SOLID IN WATER, AND THEREAFTER CONTACTING THE SOLUTION WITH HYDROXIDE IONS WHEREBY ELEMENT 95 IS PRECIPITATED IN A SUBSTANTIALLY IRON-FREE STATE IN THE FORM OF ITS HYDROXIDE.
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) | 1973-12-28 | 1974-06-29 | 1974-12-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-12-28 | 1978-06-29 | 1978-12-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-12-28 | 1982-06-29 | 1982-12-29 | $7700.00 | Window Closed / Lapsed |