Patent US3290866A successfully refreshed from Google Patents.
Patent US2764470A successfully refreshed from Google Patents.
US2764470A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Purification of uranium peroxide
Assignee: Individual
•
Filing: 1946-03-07
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Granted: 1956-09-25
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Expires: 1966-03-07
Abstract
No abstract record available.
Inventors
- 👤 Clarence L Richardson
- 👤 Sanford B Smith
- 👤 Gordon B Robbins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 21:35
CPC Classifications
C; C01; C01B; C01B15/00; C01B15/04; C01B15/047; C01B15/0475
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
58 words
THE METHOD OF PREPARING URANIUM PEROXIDE OF LOW FLUORIDE CONTENT, WHICH COMPRISES FORMING A SLURRY OF FLUORIDE-CONTAMINATED URANIUM PEROXIDE IN AN AQUEOUS SOLUTION OF AN ACID SELECTED FROM THE GROUP CONSISTING OF NITRIC ACID AND SULPHURIC ACID SUFFICIENT TO DISSOLVE ONLY A MINOR PROPORTION OF THE URANIUM PEROXIDE AND THEN SEPARATING THE UNDISSOLVED URANIUM PEROXIDE FROM THE SOLUTION.
Claim 2
Independent Claim
58 words
THE METHOD OF PREPARING URANIUM PEROXIDE OF LOW FLUORIDE CONTENT, WHICH COMPRISES FORMING A SLURRY OF FLUORIDE-CONTAMINATED URANIUM PEROXIDE IN AN AQUEOUS SOLUTION OF AN ACID SELECTED FROM THE GROUP CONSISTING OF NITRIC ACID AND SULPHURIC ACID SUFFICIENT TO DISSOLVE ONLY A MINOR PROPORTION OF THE URANIUM PEROXIDE AND THEN SEPARATING THE UNDISSOLVED URANIUM PEROXIDE FROM THE 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) | 1959-09-25 | 1960-03-26 | 1960-09-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-09-25 | 1964-03-26 | 1964-09-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-09-25 | 1968-03-26 | 1968-09-25 | $7700.00 | Window Closed / Lapsed |