US3374178A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Doped hypostoichiometric dioxide nuclear fuel composition and method of preparation
Assignee: Atomic Energy of Canada Ltd AECL
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Filing: 1965-05-03
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Granted: 1968-03-19
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Expires: 1985-05-03
Abstract
No abstract record available.
Inventors
- 👤 May John Edward
- 👤 Stoute Richard Lloyd
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 15:31
CPC Classifications
G; G21; G21C; G21C3/00; G21C3/42; G21C3/58; G21C3/62; G21C3/623; Y; Y02; Y02E; Y02E30/00; Y02E30/30; Y10; Y10S; Y10S376/00; Y10S376/90; Y10S376/901
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
58 words
A CERAMIC NUCLEAR FUEL COMPOSITION COMPRISING A HYPOSTOICHIOMETRIC DIOXIDE OF A METAL SELECTED FROM THE GROUP CONSISTING OF URANIUM AND THORIUM AND MIXTURES THEREOF WITH AN OXYGEN TO METAL RATIO IN THE RANGE OF ABOUT 1.90-1.998 AND CONTAINING THEREIN MINOR QUANTITIES OF AN ADDITIVE OXIDE OF A METAL SELECTED FROM THE GROUP CONSISTING OF YTTRIUM, LANTHANUM AND NIOBIUM.
Claim 2
Dependent Claim
58 words
A CERAMIC NUCLEAR FUEL COMPOSITION COMPRISING A HYPOSTOICHIOMETRIC DIOXIDE OF A METAL SELECTED FROM THE GROUP CONSISTING OF URANIUM AND THORIUM AND MIXTURES THEREOF WITH AN OXYGEN TO METAL RATIO IN THE RANGE OF ABOUT 1.90-1.998 AND CONTAINING THEREIN MINOR QUANTITIES OF AN ADDITIVE OXIDE OF A METAL SELECTED FROM THE GROUP CONSISTING OF YTTRIUM, LANTHANUM AND NIOBIUM.
Claim 3
Dependent Claim
81 words
THE PROCEDURE FOR FORMING REACTOR FUEL COMPOSITIONS COMPRISING: (1) FORMING AN INTIMATE MIXTURE OF A HYPERSTOICHIOMETRIC DIOXIDE OF A METAL SELECTED FROM THE GROUP CONSISTING OF URANIUM AND THORIUM AND MIXTURES THEREOF WITH UP TO ABOUT 1 ATOM PERCENT OF A MEMBER SELECTED FROM THE GROUP CONSISTING OF THE METAL AND METAL OXIDES OF YTTRIUM, LANTHANUM AND NIOBIUM; (2) SINTERING THE MIXTURE; AND (3) THEARFTER REDUCING THE DIOXIDE TO A HYPOSTOICHIOMETRIC STATES AT A TEMPERATURE IN THE RANGE OF ABOUT 1700-2000*C.
Claim 4
Dependent Claim
81 words
THE PROCEDURE FOR FORMING REACTOR FUEL COMPOSITIONS COMPRISING: (1) FORMING AN INTIMATE MIXTURE OF A HYPERSTOICHIOMETRIC DIOXIDE OF A METAL SELECTED FROM THE GROUP CONSISTING OF URANIUM AND THORIUM AND MIXTURES THEREOF WITH UP TO ABOUT 1 ATOM PERCENT OF A MEMBER SELECTED FROM THE GROUP CONSISTING OF THE METAL AND METAL OXIDES OF YTTRIUM, LANTHANUM AND NIOBIUM; (2) SINTERING THE MIXTURE; AND (3) THEARFTER REDUCING THE DIOXIDE TO A HYPOSTOICHIOMETRIC STATES AT A TEMPERATURE IN THE RANGE OF ABOUT 1700-2000*C.
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) | 1971-03-19 | 1971-09-18 | 1972-03-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-03-19 | 1975-09-18 | 1976-03-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-03-19 | 1979-09-18 | 1980-03-19 | $7700.00 | Window Closed / Lapsed |