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. 08, 2011
Filed:
Jul. 09, 2008
Koichiro Harada, Higashi-Hiroshima, JP;
Kenji Suzuki, Higashi-Hiroshima, JP;
Kenji Okamoto, Hiroshima, JP;
Hiroshi Yamada, Hiroshima, JP;
Akihide Tamani, Hiroshima, JP;
Koichiro Harada, Higashi-Hiroshima, JP;
Kenji Suzuki, Higashi-Hiroshima, JP;
Kenji Okamoto, Hiroshima, JP;
Hiroshi Yamada, Hiroshima, JP;
Akihide Tamani, Hiroshima, JP;
Mazda Motor Corporation, , JP;
Abstract
In a particulate filter, a catalyst layer containing Pt-carried activated alumina particles, CeZr-based mixed oxide particles and ZrNd-based mixed oxide particles is formed, the proportion of the total amount of the CeZr-based mixed oxide particles and the ZrNd-based mixed oxide particles in the total amount of the Pt-carried activated alumina particles, the CeZr-based mixed oxide particles and the ZrNd-based mixed oxide particles is 10% to 60% by mass, both inclusive, and the mass ratio of the CeZr-based mixed oxide particles to the ZrNd-based mixed oxide particles is 20/80 to 80/20, both inclusive. This configuration enhances the particulate burning property and the low-temperature exhaust gas conversion efficiency.