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:
Jul. 11, 1995
Filed:
Oct. 12, 1993
Applicant:
Inventors:
Takao Soma, Nishikamo, JP;
Tomonori Takahashi, Chita, JP;
Shinji Kawasaki, Nagoya, JP;
Kazuyo Mori, Ichonomiya, JP;
Yoshihiro Ito, Nagoya, JP;
Katsuki Yoshioka, Himeji, JP;
Assignee:
NGK Insulators, Ltd., , JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C04B / ; H01M / ; H01M / ;
U.S. Cl.
CPC ...
429 44 ; 2521821 ; 423594 ; 423599 ; 429 30 ; 429 33 ; 429 40 ; 501108 ; 501123 ; 501126 ;
Abstract
A porous sintered body composed mainly of lanthanum manganite in which a part of lanthanum atoms at A-sites of the lanthanum manganite are substituted by atoms of a metal selected from the group consisting of alkaline earth metals and rare earth metals. The dimensional shrinkage amount of the porous sintered body in heat cycling between room temperature and 1,000.degree. C. is not more than 0.01% per one heat cycle.