US2789879A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Recovery of uranium from phosphoric acid
Assignee: Individual
•
Filing: 1950-11-15
•
Granted: 1957-04-23
•
Expires: 1970-11-15
Abstract
No abstract record available.
Inventors
- 👤 Kaufman David
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 13:09
CPC Classifications
C; C22; C22B; C22B60/00; C22B60/02; C22B60/0204; C22B60/0217; C22B60/0252; C22B60/0278; C22B60/0282
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
45 words
A PROCESS FOR RECOVERING URANIUM VALUES FROM PHOSPHORIC ACID CONTAINING THE SAME COMPRISING THE STEPS OF TREATING THE PHOSPHORIC ACID WITH A REDUCING AGENT TO PLSCE THE URANIUM IN THE URANOUS STSTE, AND THEN PRECIPITATING THE URANIUM BY ADDING A BASE TO THE REDUCED SOLUTION.
Claim 2
Dependent Claim
45 words
A PROCESS FOR RECOVERING URANIUM VALUES FROM PHOSPHORIC ACID CONTAINING THE SAME COMPRISING THE STEPS OF TREATING THE PHOSPHORIC ACID WITH A REDUCING AGENT TO PLSCE THE URANIUM IN THE URANOUS STSTE, AND THEN PRECIPITATING THE URANIUM BY ADDING A BASE TO THE REDUCED SOLUTION.
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) | 1960-04-22 | 1960-10-22 | 1961-04-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-04-22 | 1964-10-22 | 1965-04-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-04-22 | 1968-10-22 | 1969-04-23 | $7700.00 | Window Closed / Lapsed |