US2982602A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Uranium milling
Assignee: Phillips Petroleum Co
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Filing: 1958-04-21
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Granted: 1961-05-02
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Expires: 1978-04-21
Abstract
No abstract record available.
Inventors
- 👤 Fred T Sherk
- 👤 Robert A Koble
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 17:00
CPC Classifications
C; C22; C22B; C22B60/00; C22B60/02; C22B60/0204; C22B60/0217; C22B60/0221; C22B60/0247
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
94 words
A PROCESS OF TREATING THE BARREN LIQUOR FORMED DURING THE EXTRACTION OF URANIUM VALUES FROM SULFUR-BEARING ORE BY THE SEQUENTIAL STEPS OF LEACHING THE ORE WITH A LIXIVIANT COMPRISING AMMONIUM SULFATE AND PRECIPITATING URANIUM VALUES WITH A PRECIPITANT COMPRISING AMMONIA, COMPRISING THE STEPS OF DIVIDING THE BARREN LIQUOR INTO FIRST AND SECOND STREAMS, CONTACTING THE FIRST STREAM WITH CARBON DIOXIDE, WASHING MATERIALS WITH THE FIRST STREAM THAT ARE TO BE REMOVED AS TAILINGS, CONTACTING THE SECOND STREAM WITH A PRECIPITANT COMPRISING CALCIUM OXIDE, REMOVING PRECIPITATE FROM THE SECOND STREAM, AND HEATING THE SECOND STREAM.
References Cited (Backward Citations)
US2597504A
Cited
US2769686A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-05-01 | 1964-10-31 | 1965-05-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-05-01 | 1968-10-31 | 1969-05-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-05-01 | 1972-10-31 | 1973-05-02 | $7700.00 | Window Closed / Lapsed |