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:
Dec. 08, 1998
Filed:
Mar. 20, 1997
Applicant:
Inventors:
Kazuhiko Kumazawa, Nagoya, JP;
Koichi Ikeshima, Okazaki, JP;
Assignee:
NGK Insulators, Ltd., , JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B01J / ; B01J / ; C03C / ; B32B / ;
U.S. Cl.
CPC ...
502439 ; 502527 ; 502-1 ; 428116 ; 428117 ; 428118 ; 501-9 ;
Abstract
A ceramic honeycomb catalyst having an excellent thermal shock resistance in which a carrier is coated on a ceramic honeycomb structural body, has a mean thermal expansion coefficient in a range from 40.degree. to 800.degree. C. of smaller than 0.7.times.10.sup.-6 /.degree.C. Therefore, it is possible to obtain a ceramic honeycomb catalyst having excellent thermal shock resistance in which a mechanical strength of a ceramic honeycomb structural body to which a carrier such as .gamma.-alumina is coated is not decreased and the carrier is not peeled off from the ceramic honeycomb structural body.