Patent US3565762A successfully refreshed from Google Patents.
US3565762A
Expired / Lapsed
US
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Absorber element for nuclear reactors
Assignee: Forschungszentrum Jülich
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Filing: 1968-05-24
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Granted: 1971-02-23
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Expires: 1988-05-24
Abstract
Abstract AN ABSORBER ELEMENT FOR THE REGULATION AND CONTROL OF NEUTRON FLUX IN A NUCLEAR REACTOR AND ESPECIALLY "STACKED-BALL," "STACKED-PARTICLE" OR "ORDERED-BED" REACTORS WHEREIN A BODY OF GRAPHITE OR ZIRCONIUM ALLOY CONTAINS A MASS OF COATED ABSORBER PARTICLES HAVING CORES OF HIGH-MELTING-POINT BORIDES, I.E. THE DIBORIDES OF ZIRCONIUM, VANADIUM, HAFNIUM OR TANTALUM. THE PARTICLES, HAVING A PARTICLE SIZE OF THE ORDER OF 100 TO 500 MICRONS (SEVERAL HUNDREDS OF MICRONS), ARE FORMED BY COATING THESE CORES WITH PYROLYTIC CARBON, AND CONVENTIONAL COATED-PARTICLE CARBIDES OR OXIDES.
Inventors
- 👤 Hubertus Nickel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 09:38
CPC Classifications
G; G21; G21C; G21C7/00; G21C7/06; G21C7/24; G21C7/08; G21C7/10; Y; Y02; Y02E; Y02E30/00; Y02E30/30
Claims Analysis
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-02-22 | 1974-08-24 | 1975-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-22 | 1978-08-24 | 1979-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-22 | 1982-08-24 | 1983-02-23 | $7700.00 | Window Closed / Lapsed |