US3228748A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the preparation of a uranium compound in powder form
Assignee: Individual
•
Filing: 1961-12-21
•
Granted: 1966-01-11
•
Expires: 1981-12-21
Abstract
No abstract record available.
Inventors
- 👤 Accary Andre
- 👤 Dubuisson Jacques
- 👤 Rousset Pierre
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 16:46
CPC Classifications
C; C01; C01B; C01B21/00; C01B21/06; C01B21/0615; C01B21/063; C01B32/00; C01B32/90; C01B33/00; C01B33/06; G; G21; G21C; G21C3/00; G21C3/42; G21C3/58; G21C3/62; C01P; C01P2004/00; C01P2004/30; C01P2004/32; C01P2004/60; C01P2004/61; C01P2006/00; C01P2006/80; Y; Y02; Y02E; Y02E30/00; Y02E30/10; Y02E30/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
135 words
A PROCESS FOR THE PRODUCTION OF POWDERS OF REFRACTORY URANIUM COMPOUNDS SELECTED FROM THE GROUP CONSISTING OF URANIUM CARBIDE, URANIUM NITRIDE AND URANIUM SILICIDE, WHICH COMPRISES THE STEPS OF FORMING A MASS OF A METALCERAMIC COMPOSITION CONTAINING A MAJOR PROPORTION OF SAID COMPOUND AND A MINOR PROPORTION OF UNCOMBINED URANIUM METAL AS THE MATRIX METAL OF SAID MASS, HEATING SAID COMPOSITION AT A TEMPERATURE OF FROM 1000*C. TO 2200*C. FOR A TIME SUFFICIENT TO REGULARIZE THE SHAPE AND MAKE UNIFORM THE SIZE OF THE GRAINS OF SAID REFRACTORY URANIUM COMPOUND, FORMING PARTICLES OF SAID COMPOUND BY CONTACTING SAID MASS WITH AT LEAST ONE SUBSTANCE WHICH CHEMICALLY AND SELECTIVELY REACTS WITH SAID UNCOMBINED MATRIX METAL WITH DISINTEGRATION OF THE MASS INTO SMALL PARTICLES OF SAID REFRACTORY URANIUM COMPOUND AND SEPARATING THE PARTICLES OF REFRACTORY URANIUM COMPOUND.
Claim 2
Dependent Claim
135 words
A PROCESS FOR THE PRODUCTION OF POWDERS OF REFRACTORY URANIUM COMPOUNDS SELECTED FROM THE GROUP CONSISTING OF URANIUM CARBIDE, URANIUM NITRIDE AND URANIUM SILICIDE, WHICH COMPRISES THE STEPS OF FORMING A MASS OF A METALCERAMIC COMPOSITION CONTAINING A MAJOR PROPORTION OF SAID COMPOUND AND A MINOR PROPORTION OF UNCOMBINED URANIUM METAL AS THE MATRIX METAL OF SAID MASS, HEATING SAID COMPOSITION AT A TEMPERATURE OF FROM 1000*C. TO 2200*C. FOR A TIME SUFFICIENT TO REGULARIZE THE SHAPE AND MAKE UNIFORM THE SIZE OF THE GRAINS OF SAID REFRACTORY URANIUM COMPOUND, FORMING PARTICLES OF SAID COMPOUND BY CONTACTING SAID MASS WITH AT LEAST ONE SUBSTANCE WHICH CHEMICALLY AND SELECTIVELY REACTS WITH SAID UNCOMBINED MATRIX METAL WITH DISINTEGRATION OF THE MASS INTO SMALL PARTICLES OF SAID REFRACTORY URANIUM COMPOUND AND SEPARATING THE PARTICLES OF REFRACTORY URANIUM COMPOUND.
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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) | 1969-01-10 | 1969-07-12 | 1970-01-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-10 | 1973-07-12 | 1974-01-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-10 | 1977-07-12 | 1978-01-11 | $7700.00 | Window Closed / Lapsed |