US3142533A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for preparing shaped articles of uranium silicides
Assignee: Commissariat à l'Énergie Atomique et Aux Énergies Alternatives
•
Filing: 1960-05-24
•
Granted: 1964-07-28
•
Expires: 1980-05-24
Abstract
No abstract record available.
Inventors
- 👤 Accary Andre
- 👤 Dubuisson Jacques
- 👤 Humbert Jacques
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:19
CPC Classifications
G; G21; G21C; G21C3/00; G21C3/42; G21C3/58; G21C3/62; C; C01; C01B; C01B33/00; C01B33/06; C04; C04B; C04B35/00; C04B35/515; C04B35/5158; C04B35/58; C04B35/58085; C04B35/622; C04B35/64; C04B35/65; Y; Y02; Y02E; Y02E30/00; Y02E30/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
137 words
A PROCESS FOR PREPARING SHAPED ARTICLES OF A URANIUM SILICIDE SELECTED FROM THE GROUP CONSISTING OF U3SI2, USI, USI2 AND USI3, WHICH COMPRISES INTRODUCING INTO A MOULD AN INTIMATE MIXTURE OF PARTICLES OF URANIUM AND SILICON IN SUBSTANTAILLY STOICHIOMETIC PROPORTIONS CORRESPONDING TO THE URANIUM SILICIDE SELECTED FOR MANUFACTURE, COMPACTING THE MIXTURE, HEATING THE MIXTURE IN A FIRST STAGE UNDER VACUUM IN THE MOULD TO A TEMPERATURE BETWEEN 450*C. AND 675*C., IN ORDER TO CAUSE REACTION OF THE SILICON AND THE URANIUM, AND SUBJECTING THE COHERENT POROUS PRODUCT SO OBTAINED TO HEATING IN A SECOND STAGE UNDER VACUUM AT A TEMPERATURE HIGHER THAN THAT OF THE FIRST HEATING STAGE AND LOWER THAN THE MELTING POINT OF THE SELECTED URANIUM SILICIDE IN ORDER TO COMPLETE THE REACTION BETWEEN THE SILICON AND THE URANIUM AND OBTAIN A COHERENT NON-POROUS ARTICLE.
Claim 2
Dependent Claim
137 words
A PROCESS FOR PREPARING SHAPED ARTICLES OF A URANIUM SILICIDE SELECTED FROM THE GROUP CONSISTING OF U3SI2, USI, USI2 AND USI3, WHICH COMPRISES INTRODUCING INTO A MOULD AN INTIMATE MIXTURE OF PARTICLES OF URANIUM AND SILICON IN SUBSTANTAILLY STOICHIOMETIC PROPORTIONS CORRESPONDING TO THE URANIUM SILICIDE SELECTED FOR MANUFACTURE, COMPACTING THE MIXTURE, HEATING THE MIXTURE IN A FIRST STAGE UNDER VACUUM IN THE MOULD TO A TEMPERATURE BETWEEN 450*C. AND 675*C., IN ORDER TO CAUSE REACTION OF THE SILICON AND THE URANIUM, AND SUBJECTING THE COHERENT POROUS PRODUCT SO OBTAINED TO HEATING IN A SECOND STAGE UNDER VACUUM AT A TEMPERATURE HIGHER THAN THAT OF THE FIRST HEATING STAGE AND LOWER THAN THE MELTING POINT OF THE SELECTED URANIUM SILICIDE IN ORDER TO COMPLETE THE REACTION BETWEEN THE SILICON AND THE URANIUM AND OBTAIN A COHERENT NON-POROUS ARTICLE.
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) | 1967-07-28 | 1968-01-27 | 1968-07-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-07-28 | 1972-01-27 | 1972-07-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-07-28 | 1976-01-27 | 1976-07-28 | $7700.00 | Window Closed / Lapsed |