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:
Oct. 19, 2010
Filed:
Jun. 05, 2007
Michihiko Takeuchi, Kakegawa, JP;
Hirotaka Ori, Kakegawa, JP;
Takeru Yoshida, Nishikamo-gun, JP;
Kazunobu Ishibashi, Toyota, JP;
Ichiro Hachisuka, Nagoya, JP;
Michihiko Takeuchi, Kakegawa, JP;
Hirotaka Ori, Kakegawa, JP;
Takeru Yoshida, Nishikamo-gun, JP;
Kazunobu Ishibashi, Toyota, JP;
Ichiro Hachisuka, Nagoya, JP;
Cataler Corporation, Shinzuoka, JP;
Toyota Jidosha Kabushiki Kaisha, Toyota, JP;
Abstract
The present invention provides an exhaust gas purification catalyst comprising a base material, and a two or more layered catalyst coating layer, formed on the base material, wherein the two or more layers have upper and lower layers, and wherein the upper layer contains a large amount of noble metal per liter of the base material more than that of the lower layer, and the lower layer contains a large amount of an oxygen storage/release material per liter of the base material more than that of the upper layer. This exhaust gas purification catalyst has more excellent HS purifying performance than conventional catalysts while maintaining purifying performance against NOx and the other exhaust gas components.