US2910345A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Separation of polonium, protactinium or mixtures thereof in aqueous solution from bismuth, lead, zirconium and/or columbium values
Assignee: Individual
•
Filing: 1950-09-12
•
Granted: 1959-10-27
•
Expires: 1970-09-12
Abstract
No abstract record available.
Inventors
- 👤 Quentin Van Winkle
- 👤 Kurt A Kraus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 14:55
CPC Classifications
C; C01; C01G; C01G99/00; C01G99/003
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
97 words
A PROCESS OF SEPARATING A MINERAL ACID SALT OF A METAL SELECTED FROM THE GROUP CONSISTING OF POLONIUM, PROTACTINIUM AND A MIXTURE OF POLONIUM AND PROTACTINIUM FROM AN AQUEOUS SOLUTION OF SAID METAL SALT AND ALSO CONTAINING AT LEAST ONE OF THE VALUES SELECTED FROM THE GROUP CONSISTING OF BISNUTH, LEAD, ZIRCONIUM AND COLUMBIUM VALUES, COMPRISING PROVIDING HYDROCHLORIC ACID IN SAID SOLUTIION IN A CONCENTRATION OF AT LEAST 5 (; CONTACTING SAID AQUEOUS SOLUTION WITH A SUBSTANTIALLY WATERIMMISCIBLE ORGANIC SOLVENT; AND SEPARATING AN AQUEOUS PHASE CONTAINING SAID VALUES FROM AN ORGANIC EXTRACT PHASE CONTAINING SAID METAL SALT.
Claim 2
Dependent Claim
97 words
A PROCESS OF SEPARATING A MINERAL ACID SALT OF A METAL SELECTED FROM THE GROUP CONSISTING OF POLONIUM, PROTACTINIUM AND A MIXTURE OF POLONIUM AND PROTACTINIUM FROM AN AQUEOUS SOLUTION OF SAID METAL SALT AND ALSO CONTAINING AT LEAST ONE OF THE VALUES SELECTED FROM THE GROUP CONSISTING OF BISNUTH, LEAD, ZIRCONIUM AND COLUMBIUM VALUES, COMPRISING PROVIDING HYDROCHLORIC ACID IN SAID SOLUTIION IN A CONCENTRATION OF AT LEAST 5 (; CONTACTING SAID AQUEOUS SOLUTION WITH A SUBSTANTIALLY WATERIMMISCIBLE ORGANIC SOLVENT; AND SEPARATING AN AQUEOUS PHASE CONTAINING SAID VALUES FROM AN ORGANIC EXTRACT PHASE CONTAINING SAID METAL SALT.
References Cited (Backward Citations)
US2227833A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-10-26 | 1963-04-27 | 1963-10-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-10-26 | 1967-04-27 | 1967-10-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-10-26 | 1971-04-27 | 1971-10-27 | $7700.00 | Window Closed / Lapsed |