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Patent US2597504A successfully refreshed from Google Patents.
US2597504A
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US
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Method of extracting uranium from bituminous shales and shale culm containing uranium
Assignee: Individual
•
Filing: 1948-12-03
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Granted: 1952-05-20
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Expires: 1968-12-03
Abstract
No abstract record available.
Inventors
- 👤 Larsson Markus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 17:46
CPC Classifications
C; C22; C22B; C22B60/00; C22B60/02; C22B60/0204; C22B60/0217; C22B60/0221; C22B60/0247
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
46 words
METHOD OF EXTRACTING URANIUM FROM BITUMINOUS SHALE CONTAINING URANIUM, WHICH COMPRISES PREPARING A SUSPENSION OF THE SHALE IN ITS NATURAL CHEMICAL STATE IN A SOLUTION OF ALKALI CARBONATE, BLOWING A GAS CONTAINING FREE OXYGEN THROUGH SAID SUSPENSION AND THEN SEPARATING THE EXTRACT FROM THE SOLID MATTERS.
Claim 2
Dependent Claim
46 words
METHOD OF EXTRACTING URANIUM FROM BITUMINOUS SHALE CONTAINING URANIUM, WHICH COMPRISES PREPARING A SUSPENSION OF THE SHALE IN ITS NATURAL CHEMICAL STATE IN A SOLUTION OF ALKALI CARBONATE, BLOWING A GAS CONTAINING FREE OXYGEN THROUGH SAID SUSPENSION AND THEN SEPARATING THE EXTRACT FROM THE SOLID MATTERS.
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) | 1955-05-20 | 1955-11-19 | 1956-05-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-05-20 | 1959-11-19 | 1960-05-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-05-20 | 1963-11-19 | 1964-05-20 | $7700.00 | Window Closed / Lapsed |