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:
May. 29, 2012
Filed:
Oct. 10, 2008
Hiroshi Yamada, Hiroshima, JP;
Kenji Suzuki, Higashi-Hiroshima, JP;
Koichiro Harada, Higashi-Hiroshima, JP;
Kenji Okamoto, Hiroshima, JP;
Akihida Takami, Hiroshima, JP;
Hiroshi Yamada, Hiroshima, JP;
Kenji Suzuki, Higashi-Hiroshima, JP;
Koichiro Harada, Higashi-Hiroshima, JP;
Kenji Okamoto, Hiroshima, JP;
Akihida Takami, Hiroshima, JP;
Mazda Motor Corporation, , JP;
Abstract
A catalyst layer formed on the walls of exhaust gas channels in a particulate filter contains a catalyst material containing at least two kinds of primary particles selected from the group consisting of primary particles of activated alumina, primary particles of a ZrNd-based mixed oxide and primary particles of a CeZr-based mixed oxide. The catalyst material is formed so that primary particles of one of the ZrNd-based mixed oxide and the CeZr-based mixed oxide are dispersedly carried on the surface of each of secondary particles. Each secondary particle is formed by cohesion of at least one kind of primary particles selected from the group consisting of primary particles of activated alumina and primary particles of the other of the ZrNd-based mixed oxide and the CeZr-based mixed oxide.