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:
Jun. 12, 2018
Filed:
Apr. 07, 2017
Toyota Jidosha Kabushiki Kaisha, Toyota-shi, Aichi-ken, JP;
Cataler Corporation, Kakegawa-shi, Shizuoka-ken, JP;
Yoshinori Saito, Toyota, JP;
Masahide Miura, Toyota, JP;
Tetsuhiro Hirao, Kakegawa, JP;
Masanao Sato, Kakegawa, JP;
Hirotaka Ori, Kakegawa, JP;
TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota-shi, Aichi-ken, JP;
CATALER CORPORATION, Kakegawa-shi, Shizuoka-ken, JP;
Abstract
A catalyst for exhaust gas purification is described which includes a substrate and a catalyst coating layer provided on the substrate. The catalyst coating layer includes first and second metal oxide particles. The first metal oxide particles have a catalyst metal supported thereon, and the second metal oxide particles do not have a catalyst metal supported thereon. The first and second metal oxide particles have a specific particle size. This is because, when the sizes of the particles supporting the catalyst metal remain relatively large but the sizes of the particles not supporting a catalyst metal are minimized, it is possible to decrease the thickness of the catalyst coating layer while maintaining durability and improving gas diffusibility of the coating layer. Therefore, a thickness of the catalyst coating is decreased without decreasing durability, and the catalyst can exhibit high exhaust gas purification performance even under high load conditions.