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. 12, 2013
Filed:
Dec. 23, 2010
Yuki Aoki, Nissin, JP;
Takeru Yoshida, Toyota, JP;
Shingo Sakagami, Kakegawa, JP;
Masaaki Kawai, Kakegawa, JP;
Miho Hatanaka, Nagakute, JP;
Toshitaka Tanabe, Nagakute, JP;
Naoki Takahashi, Nagoya, JP;
Yuki Aoki, Nissin, JP;
Takeru Yoshida, Toyota, JP;
Shingo Sakagami, Kakegawa, JP;
Masaaki Kawai, Kakegawa, JP;
Miho Hatanaka, Nagakute, JP;
Toshitaka Tanabe, Nagakute, JP;
Naoki Takahashi, Nagoya, JP;
Toyota Jidosha Kabushiki Kaisha, Toyota-shi, Aichi-ken, JP;
Cataler Corporation, Shizuoka-ken, JP;
Kabushiki Kaisha Toyota Chuo Kenkyusho, Nagakute-shi, Aichi-ken, JP;
Abstract
An exhaust gas purifying catalyst includes a substrate that defines an exhaust gas passage; a lower catalyst layer formed over the substrate, and an upper catalyst layer formed over the lower catalyst layer. The lower catalyst layer has a lower catalytic precious metal that contains at least one of Pt and Pd, and a lower-layer carrier that supports the lower catalytic precious metal. The upper catalyst layer has an upper catalytic precious metal that contains Rh, and an upper-layer carrier that supports the upper catalytic precious metal. The upper-layer carrier includes an inorganic mixed oxide that contains Ce, Zr, Al, Nd, and at least one element selected from the group consisting of rare earth elements other than Ce and alkaline earth elements. The Nd is unevenly distributed in covering layers that covers surfaces of interior regions within the inorganic mixed oxide.