Patent US3249509A successfully refreshed from Google Patents.
US3249509A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Nuclear fuel particles coated with mixture of pyrolytic carbon and silicon carbide
Assignee: Individual
•
Filing: 1964-12-10
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Granted: 1966-05-03
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Expires: 1984-12-10
Abstract
No abstract record available.
Inventors
- 👤 Jr John M Blocher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:51
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: 4
Claim 1
Independent Claim
31 words
A COATED NUCLEAR BLANKET PARTICLE COMPRISING A CORE OF CERAMIC FERTILE MATERIAL AND, CONCENTRICALLY SURROUNDING IT, A PLURALITY OF LAYERS OF PYROLYZED GRAPHITIC CARBON HAVING OUTWARDLY INCREASING LEVELS OF SILICON CARBIDE.
Claim 2
Dependent Claim
31 words
A COATED NUCLEAR BLANKET PARTICLE COMPRISING A CORE OF CERAMIC FERTILE MATERIAL AND, CONCENTRICALLY SURROUNDING IT, A PLURALITY OF LAYERS OF PYROLYZED GRAPHITIC CARBON HAVING OUTWARDLY INCREASING LEVELS OF SILICON CARBIDE.
Claim 3
Dependent Claim
53 words
A COATED NUCLEAR FUEL PARTICLE COMPRISING A CORE OF CERAMIC FISSIONABLE FUEL MATERIAL, AND CONCENTRICALLY SURROUNDING IT, A LAYER OF SUBSTANTIALLY PURE PYROLYZED CARBON, AND A LAYER OF PYROLYZED CARBON CONTAINING SILICON CARBIDE, THE CORE AND THE LAYER OF SUBSTANTIALLY PURE PYROLYZED CARBON BEING SO ARRANGED AS TO DEFINE A VOID SPACE THEREBETWEEN.
Claim 4
Dependent Claim
53 words
A COATED NUCLEAR FUEL PARTICLE COMPRISING A CORE OF CERAMIC FISSIONABLE FUEL MATERIAL, AND CONCENTRICALLY SURROUNDING IT, A LAYER OF SUBSTANTIALLY PURE PYROLYZED CARBON, AND A LAYER OF PYROLYZED CARBON CONTAINING SILICON CARBIDE, THE CORE AND THE LAYER OF SUBSTANTIALLY PURE PYROLYZED CARBON BEING SO ARRANGED AS TO DEFINE A VOID SPACE THEREBETWEEN.
References Cited (Backward Citations)
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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) | 1969-05-02 | 1969-11-01 | 1970-05-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-05-02 | 1973-11-01 | 1974-05-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-05-02 | 1977-11-01 | 1978-05-03 | $7700.00 | Window Closed / Lapsed |