US2756138A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of vacuum refining uranium
Assignee: Individual
•
Filing: 1944-04-28
•
Granted: 1956-07-24
•
Expires: 1964-04-28
Abstract
No abstract record available.
Inventors
- 👤 Meister George
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 13:13
CPC Classifications
C; C22; C22B; C22B60/00; C22B60/02; C22B60/0204; C22B60/0213; C22B60/0286; Y; Y10; Y10S; Y10S164/00; Y10S164/07; Y10S266/00; Y10S266/905
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
107 words
THE METHOD OF REFINING URANIUM COMPRISING THE STEPS OF SUPPORTING A MASS OF URANIUM CONTAINING IMPURITIES UPON A STRAINER IN A CRUCIBLE HAVING AN OPENING IN THE BOTTOM THEREOF COMMUNICATING WITH A MOLD, HEATING SAID MASS UNTIL THE URANIUM METAL BEINGS TO FLOW THEREFROM VAPORIZING AND REMOVING AT LEAST A PORTION OF THE VAPORIZABLE IMPURITIES IN SAID URANIUM, CONDENSING THE VAPORIZED IMPURITIES ON A COOLED SURFACE ABOVE AND ADJACENT THE MASS OF URANIUM CONTAINING IMPURITIES, PASSING THE MOLTEN URANIUM THROUGH SAID STRAINER WHILE RETAINING THE NON-VAPORIZED IMPURITIES IN SAID CRUCIBLE, AND COLLECTING THE MOLTEN METAL IN SAID MOLD, SAID HEATING AND COLLECTING BEING CONDUCTED IN HIGH VACUUM.
Claim 2
Independent Claim
107 words
THE METHOD OF REFINING URANIUM COMPRISING THE STEPS OF SUPPORTING A MASS OF URANIUM CONTAINING IMPURITIES UPON A STRAINER IN A CRUCIBLE HAVING AN OPENING IN THE BOTTOM THEREOF COMMUNICATING WITH A MOLD, HEATING SAID MASS UNTIL THE URANIUM METAL BEINGS TO FLOW THEREFROM VAPORIZING AND REMOVING AT LEAST A PORTION OF THE VAPORIZABLE IMPURITIES IN SAID URANIUM, CONDENSING THE VAPORIZED IMPURITIES ON A COOLED SURFACE ABOVE AND ADJACENT THE MASS OF URANIUM CONTAINING IMPURITIES, PASSING THE MOLTEN URANIUM THROUGH SAID STRAINER WHILE RETAINING THE NON-VAPORIZED IMPURITIES IN SAID CRUCIBLE, AND COLLECTING THE MOLTEN METAL IN SAID MOLD, SAID HEATING AND COLLECTING BEING CONDUCTED IN HIGH VACUUM.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-07-24 | 1960-01-23 | 1960-07-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-07-24 | 1964-01-23 | 1964-07-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-07-24 | 1968-01-23 | 1968-07-24 | $7700.00 | Window Closed / Lapsed |