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:
Nov. 20, 2007
Filed:
Sep. 07, 2006
Mareo Kimura, Kakegawa, JP;
Naoto Miyoshi, Kakegawa, JP;
Hirohisa Tanaka, Ikeda, JP;
Isao Tan, Ikeda, JP;
Mareo Kimura, Kakegawa, JP;
Naoto Miyoshi, Kakegawa, JP;
Hirohisa Tanaka, Ikeda, JP;
Isao Tan, Ikeda, JP;
Cataler Corporation, Kakegawa-shi, JP;
Daihatsu Motor Co., Ltd., Osaka, JP;
Abstract
An exhaust gas-purifying catalyst includes a carrier, and an active component formed of a noble metal, carried by the carrier. The carrier has a core portion comprising a cubic or tetragonal stabilized zirconia-based composite oxide containing at least one stabilizing element, and a surface layer portion including a heat resistant zirconia-based composite oxide formed on a surface of the core portion. The surface layer has a specific surface area which is larger than a specific surface area of the core portion. A part of the noble metal is solid-solutioned into the zirconia-based composite oxide of the surface layer portion, and the balance of the noble metal is carried on a surface of the surface layer portion.