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. 11, 2007
Filed:
Aug. 10, 2005
Hideharu Iwakuni, Hiroshima, JP;
Asako Sadai, Hiroshima, JP;
Masaaki Akamine, Hiroshima, JP;
Seiji Miyoshi, Hiroshima, JP;
Hiroshi Yamada, Hiroshima, JP;
Akihide Takami, Hiroshima, JP;
Hideharu Iwakuni, Hiroshima, JP;
Asako Sadai, Hiroshima, JP;
Masaaki Akamine, Hiroshima, JP;
Seiji Miyoshi, Hiroshima, JP;
Hiroshi Yamada, Hiroshima, JP;
Akihide Takami, Hiroshima, JP;
Mazda Motor Corporation, Hiroshima, JP;
Abstract
In an exhaust gas purification catalyst comprising a honeycomb support and a catalytic layer that is formed on wall surfaces of each cell of the honeycomb support and contains active alumina and a mixed oxide containing Ce, Zr and Nd and doped with catalytic precious metal, the mixed oxide has a CeO/ZrOmass ratio of 1.4 or more and the ratio of NdO/(CeO+ZrO+NdO) in the mixed oxide is 20 mass % or less.