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Patent US3878041A successfully refreshed from Google Patents.
US3878041A
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Oxynitride fuel kernel for gas-cooled reactor fuel particles
Assignee: United States Department of Energy
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Filing: 1973-08-08
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Granted: 1975-04-15
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Expires: 1993-08-08
Abstract
Abstract A new nuclear fuel for use in gas-cooled reactors comprising a carbon coated kernal of UO2-xN3/4 x where 0 < x < OR = 1.
Inventors
- 👤 James M Leitnaker
- 👤 Terrence B Lindemer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 08:48
CPC Classifications
G; G21; G21C; G21C3/00; G21C3/42; G21C3/58; G21C3/62; G21C3/626; Y; Y02; Y02E; Y02E30/00; Y02E30/30
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
41 words
A HIGH TEMPERATURE GAS-COOLED REACTOR FUEL PARTICLE COMPRISING A SPHEROIDAL KERNEL OF A METAL OXIDE AND A METAL NITRIDE WITH UP TO 33-1/3 MOLE PERCENT NITRIDE, SAID OXIDE AND NITRIDE BEING SELECTED FROM THE GROUP CONSISTING OF A MIXTURE OF UO2
Claim 2
Dependent Claim
41 words
A HIGH TEMPERATURE GAS-COOLED REACTOR FUEL PARTICLE COMPRISING A SPHEROIDAL KERNEL OF A METAL OXIDE AND A METAL NITRIDE WITH UP TO 33-1/3 MOLE PERCENT NITRIDE, SAID OXIDE AND NITRIDE BEING SELECTED FROM THE GROUP CONSISTING OF A MIXTURE OF UO2
Claim 3
Dependent Claim
14 words
The particle of claim 1 wherein said oxide and nitride are UO2 and U2N3.
Claim 4
Dependent Claim
25 words
The particle according to claim 2 wherein said UO2 and U2N3 are present as a solid solution UO2-xN3/4 x wherein 0 < x < 1.
Claim 5
Dependent Claim
19 words
The particle according to claim 2 wherein said UO2 and U2N3 are within the area A of FIG. 2.
Claim 6
Dependent Claim
22 words
The particle according to claim 2 wherein said U2N3 is present in an amount of from 0.06 to 22- 1/2 mole percent.
Claim 7
Dependent Claim
33 words
The particle according to claim 2 further comprising a dense graphite layer adjacent said carbon cover, a SiC layer adjacent said graphite layer and a second dense graphite layer adjacent said SiC layer.
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) | 1978-04-14 | 1978-10-14 | 1979-04-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-04-14 | 1982-10-14 | 1983-04-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-04-14 | 1986-10-14 | 1987-04-15 | $7700.00 | Window Closed / Lapsed |