US3000698A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Precipitation of dense ammonium diuranate
Assignee: Spencer Chemical Co
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Filing: 1959-03-12
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Granted: 1961-09-19
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Expires: 1979-03-12
Abstract
No abstract record available.
Inventors
- 👤 Gordon A Crowe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 23:52
CPC Classifications
C; C01; C01G; C01G43/00; C22; C22B; C22B60/00; C22B60/02; C22B60/0204; C22B60/0217; C22B60/0252; C22B60/0278
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
94 words
THE PROCESS WHICH COMPRISES PREPARING AN AQUEOUS SOLUTION OF A URANIUM SALT OF A MINERAL ACID AT AN ACIDIC PH AT WHICH THE URANIUM SALT IS SOLUBLE, INTRODUCING AMMONIUM HYDROXIDE IN THE MIXTURE TO A PH ABOVE 5 AT WHICH APPRECIABLE AMMONIUM DIURANATE PRECIPITATES, ADDING A MINERAL ACID TO THE MIXTURE UNTIL AN ACIDIC PH LESS THAN 5 IS REACHED TO PARTIALLY REDISSOLVE THE AMMONIUM DIURANATE PRECIPITATE, THEN INTRODUCING AMMONIUM HYDROXIDE TO A PH ABOVE 5 BEFORE THE PRECIPITATE COMPLETELY REDISSOLVES, AND SEPARATING THE DENSE AMMONIUM DIURANATE PRECIPITATE SO FORMED FROM THE AQUEOUS MEDIUM.
Claim 2
Dependent Claim
94 words
THE PROCESS WHICH COMPRISES PREPARING AN AQUEOUS SOLUTION OF A URANIUM SALT OF A MINERAL ACID AT AN ACIDIC PH AT WHICH THE URANIUM SALT IS SOLUBLE, INTRODUCING AMMONIUM HYDROXIDE IN THE MIXTURE TO A PH ABOVE 5 AT WHICH APPRECIABLE AMMONIUM DIURANATE PRECIPITATES, ADDING A MINERAL ACID TO THE MIXTURE UNTIL AN ACIDIC PH LESS THAN 5 IS REACHED TO PARTIALLY REDISSOLVE THE AMMONIUM DIURANATE PRECIPITATE, THEN INTRODUCING AMMONIUM HYDROXIDE TO A PH ABOVE 5 BEFORE THE PRECIPITATE COMPLETELY REDISSOLVES, AND SEPARATING THE DENSE AMMONIUM DIURANATE PRECIPITATE SO FORMED FROM THE AQUEOUS MEDIUM.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-09-18 | 1965-03-20 | 1965-09-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-09-18 | 1969-03-20 | 1969-09-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-09-18 | 1973-03-20 | 1973-09-19 | $7700.00 | Window Closed / Lapsed |