The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 22, 1994
Filed:
Sep. 21, 1992
Applicant:
Inventors:
Masahisa Inagaki, Hitachi, JP;
Masayoshi Kanno, Kitaibaraki, JP;
Hiromasa Hirakawa, Hitachi, JP;
Hideaki Ishizaki, Mito, JP;
Nobukazu Yamamoto, Hitachi, JP;
Hideo Maki, Katsuta, JP;
Junjiro Nakajima, Hitachi, JP;
Shozo Nakamura, Hitachiota, JP;
Satoshi Kanno, Hitachi, JP;
Assignee:
Hitachi, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G21C / ;
U.S. Cl.
CPC ...
376462 ; 376457 ; 376438 ;
Abstract
A fuel assembly, where crystallographic orientations of a channel box are brought into a random distribution; and cladding tubes, spacers and a channel box are made from highly corrosion-resistant, Fe--Ni, zirconium-based alloy, hardened in the (.alpha.+.beta.) phase or .beta.-phase temperature region, has an average discharge burnup level of 50 to 550 GWd/t.