US3271320A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polonium recovery
Assignee: Individual
•
Filing: 1965-03-26
•
Granted: 1966-09-06
•
Expires: 1985-03-26
Abstract
No abstract record available.
Inventors
- 👤 Raymond H Moore
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 17:20
CPC Classifications
G; G21; G21G; G21G4/00; G21G4/04; C; C01; C01G; C01G99/00; C01G99/006; C22; C22B; C22B60/00; C22B60/02; C22B61/00; G21G1/00; G21G1/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
46 words
A METHOD OF RECOVERING POLONIUM VALUES FROM A SOLUTION IN BISMUTH METAL, COMPRISING MELTING SAID SOLUTION; ADDING CERIUM METAL TO SAID SOLUTION, WHEREBY CERIUM BISMUTHIDE IS PRECIPITATED AND SAID POLONIUM VALUES ARE CARRIED BY SAID CERIUM BISMUTHIDE; AND SEPARATING THE POLONIUM-CONTAINING CERIUM BISMUTHIDE FROM BISMUTH METAL.
Claim 2
Independent Claim
46 words
A METHOD OF RECOVERING POLONIUM VALUES FROM A SOLUTION IN BISMUTH METAL, COMPRISING MELTING SAID SOLUTION; ADDING CERIUM METAL TO SAID SOLUTION, WHEREBY CERIUM BISMUTHIDE IS PRECIPITATED AND SAID POLONIUM VALUES ARE CARRIED BY SAID CERIUM BISMUTHIDE; AND SEPARATING THE POLONIUM-CONTAINING CERIUM BISMUTHIDE FROM BISMUTH METAL.
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) | 1969-09-05 | 1970-03-07 | 1970-09-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-05 | 1974-03-07 | 1974-09-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-05 | 1978-03-07 | 1978-09-06 | $7700.00 | Window Closed / Lapsed |