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:
Apr. 13, 2010
Filed:
Dec. 28, 2006
Tomoaki Urai, Hiroshima, JP;
Tomohiro Honda, Hiroshima, JP;
Katsuaki Kurata, Hiroshima, JP;
Hideharu Iwakuni, Hiroshima, JP;
Akihide Takami, Hiroshima, JP;
Tomoaki Urai, Hiroshima, JP;
Tomohiro Honda, Hiroshima, JP;
Katsuaki Kurata, Hiroshima, JP;
Hideharu Iwakuni, Hiroshima, JP;
Akihide Takami, Hiroshima, JP;
Toda Kogyo Corporation, , JP;
Mazda Motor Corporation, , JP;
Abstract
Disclosed is an exhaust gas purifying catalyst, which comprises a CeZr-based composite oxide capable of maintaining a hollow structure to ensure an oxygen absorbing/releasing capability, even after being exposed to high-temperature exhaust gas. The exhaust gas purifying catalyst comprises a honeycomb-shaped substrate, and a catalyst layer formed on a surface of the substrate. The catalyst layer contains a composite oxide which includes cerium (Ce) and zirconium (Zr) and has a hollow structure, and a catalytic metal supported by the composite oxide. The composite oxide having the hollow structure includes, in a state after being subjected to a thermal aging in Air at 1000° C. for 24 hours, a particle with a shape having an outer diameter of 750 to 1000 nm and a shell thickness of 80 to 120 nm.