US2902340A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Chemical method of treating fissionable material
Assignee: Individual
•
Filing: 1945-04-04
•
Granted: 1959-09-01
•
Expires: 1965-04-04
Abstract
No abstract record available.
Inventors
- 👤 Carl M Olson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 06:40
CPC Classifications
C; C01; C01G; C01G56/00; C01G56/004; Y; Y02; Y02W; Y02W30/00; Y02W30/50
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
51 words
IN A PROCESS FOR THE RECOVERY OF PLUTONIUM VALUES FROM AN AQUEOUS NITRIC ACID SOLUTION CONTAINING HEXAVALENT PLUTONIUM IONS, THE STEP WHICH COMPRISES TREATING SAID SOLUTION WITH FORMIC ACID WHEREBY PLUTONIUM IS REDUCED TO A VALENCE STATE OF NOT GREATER THAN +4 AND THE FREE NITRIC ACID IS DESTROYED AND ELIMINTED.
Claim 2
Dependent Claim
51 words
IN A PROCESS FOR THE RECOVERY OF PLUTONIUM VALUES FROM AN AQUEOUS NITRIC ACID SOLUTION CONTAINING HEXAVALENT PLUTONIUM IONS, THE STEP WHICH COMPRISES TREATING SAID SOLUTION WITH FORMIC ACID WHEREBY PLUTONIUM IS REDUCED TO A VALENCE STATE OF NOT GREATER THAN +4 AND THE FREE NITRIC ACID IS DESTROYED AND ELIMINTED.
References Cited (Backward Citations)
US2785951A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-08-31 | 1963-03-02 | 1963-09-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-08-31 | 1967-03-02 | 1967-09-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-08-31 | 1971-03-02 | 1971-09-01 | $7700.00 | Window Closed / Lapsed |