Patent US4537709B1 successfully refreshed from Google Patents.
Patent US2830894A successfully refreshed from Google Patents.
US2830894A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of uranium
Assignee: Individual
•
Filing: 1947-11-07
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Granted: 1958-04-15
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Expires: 1967-11-07
Abstract
No abstract record available.
Inventors
- 👤 Frank H Spedding
- 👤 Harley A Wilhelm
- 👤 Wayne H Keller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 11:03
CPC Classifications
C; C22; C22B; C22B60/00; C22B60/02; C22B60/0204; C22B60/0213
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
115 words
A PROCESS FOR THE PRODUCTION OF MASSIVE URANIUM WHICH COMPRISES PLACING A CLOSED SYSTEM CONTAINING A MIXTURE CONSISTING OF URANIUM TETRAFLUORIDE AND MAGNESIUM IN A HEATING CHAMBER MAINTAINED AT A TEMPERATURE BETWEEN 500* AND 1000*C., MAINTAINING THE CLOSED SYSTEM CONTAINING SAID MIXTURE IN THE HEATING CHAMBER TO HEAT UP THE MIXTURE TO A TEMPERATURE AT WHICH URANIUM TETRAFLUORIDE AND MAGNESIUM REACT WITH THE PRODUCTION OF URANIUM AND MAGNESIUM FLUORIDE, AND MAINTAINING THE RESULTANT REACTION PRODUCTS AT ABOVE THE MELTING POINTS OF BOTH THE URANIUM METAL AND THE MAGNESIUM FLUORIDE AND UNDER SUPERATMOSPHERIC PRESSURE OF MAGNESIUM VAPOR FOR A SUFFICIENT LENGTH OF TIME TO ALLOW SEPARATION OF LIQUID URANIUM AND LIQUID MAGNESIUM FLUORIDE INTO TWO LAYERS.
Claim 2
Dependent Claim
115 words
A PROCESS FOR THE PRODUCTION OF MASSIVE URANIUM WHICH COMPRISES PLACING A CLOSED SYSTEM CONTAINING A MIXTURE CONSISTING OF URANIUM TETRAFLUORIDE AND MAGNESIUM IN A HEATING CHAMBER MAINTAINED AT A TEMPERATURE BETWEEN 500* AND 1000*C., MAINTAINING THE CLOSED SYSTEM CONTAINING SAID MIXTURE IN THE HEATING CHAMBER TO HEAT UP THE MIXTURE TO A TEMPERATURE AT WHICH URANIUM TETRAFLUORIDE AND MAGNESIUM REACT WITH THE PRODUCTION OF URANIUM AND MAGNESIUM FLUORIDE, AND MAINTAINING THE RESULTANT REACTION PRODUCTS AT ABOVE THE MELTING POINTS OF BOTH THE URANIUM METAL AND THE MAGNESIUM FLUORIDE AND UNDER SUPERATMOSPHERIC PRESSURE OF MAGNESIUM VAPOR FOR A SUFFICIENT LENGTH OF TIME TO ALLOW SEPARATION OF LIQUID URANIUM AND LIQUID MAGNESIUM FLUORIDE INTO TWO LAYERS.
References Cited (Backward Citations)
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Cited
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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) | 1961-04-14 | 1961-10-14 | 1962-04-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-04-14 | 1965-10-14 | 1966-04-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-04-14 | 1969-10-14 | 1970-04-15 | $7700.00 | Window Closed / Lapsed |