Patent US3170847A successfully refreshed from Google Patents.
US3170847A
Expired / Lapsed
US
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Self-moderating fuel element
Assignee: Individual
•
Filing: 1959-12-15
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Granted: 1965-02-23
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Expires: 1979-12-15
Abstract
No abstract record available.
Inventors
- 👤 Joseph A Dudek
- 👤 Edward L Reed
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 16:59
CPC Classifications
G; G21; G21C; G21C21/00; G21C21/02; G21C3/00; G21C3/02; G21C3/04; G21C3/16; Y; Y02; Y02E; Y02E30/00; Y02E30/30; Y10; Y10S; Y10S376/00; Y10S376/90; Y10S376/904
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
55 words
A NUCLEAR REACTOR FUEL ELEMENT COMPRISING A ZIRCONIUM HYDRIDE MODERATOR CORE, SAID ZIRCONIUM HYDRIDE BEING ENCOMPASSED WITH A LAYER OF COPPER CONTAINING URANIUM DIOXIDE INTERSPERSED THERETHROUGH IN PROPORTIONS SUCH THAT THE ATOM RATIO OF SAID URANIUM-TO-SAID COPPER IS FROM ABOUT 1:1 TO ABOUT 1:12, SAID LAYER BEING COVERED BY AN OUTER PROTECTIVE LAYER OF NICKEL.
Claim 2
Dependent Claim
55 words
A NUCLEAR REACTOR FUEL ELEMENT COMPRISING A ZIRCONIUM HYDRIDE MODERATOR CORE, SAID ZIRCONIUM HYDRIDE BEING ENCOMPASSED WITH A LAYER OF COPPER CONTAINING URANIUM DIOXIDE INTERSPERSED THERETHROUGH IN PROPORTIONS SUCH THAT THE ATOM RATIO OF SAID URANIUM-TO-SAID COPPER IS FROM ABOUT 1:1 TO ABOUT 1:12, SAID LAYER BEING COVERED BY AN OUTER PROTECTIVE LAYER OF NICKEL.
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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) | 1968-02-23 | 1968-08-24 | 1969-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-02-23 | 1972-08-24 | 1973-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-02-23 | 1976-08-24 | 1977-02-23 | $7700.00 | Window Closed / Lapsed |