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:
Aug. 15, 2023
Filed:
Feb. 28, 2022
Isao Chinzei, Toyota, JP;
Takumi Tojo, Tajimi, JP;
Takahiro Nishio, Toyota, JP;
Yosuke Toda, Kakegawa, JP;
Hirotaka Ori, Kakegawa, JP;
Minoru Ito, Kakegawa, JP;
Sho Hoshino, Kakegawa, JP;
Isao Chinzei, Toyota, JP;
Takumi Tojo, Tajimi, JP;
Takahiro Nishio, Toyota, JP;
Yosuke Toda, Kakegawa, JP;
Hirotaka Ori, Kakegawa, JP;
Minoru Ito, Kakegawa, JP;
Sho Hoshino, Kakegawa, JP;
TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota, JP;
CATALER CORPORATION, Kakegawa, JP;
Abstract
Provided is an exhaust gas purification catalyst having an improved catalyst performance while securing an OSC in an air-fuel ratio (A/F) rich atmosphere where HC poisoning is likely to occur. The present disclosure relates to an exhaust gas purification catalyst including a substrate and a catalyst coating layer coated on the substrate. The catalyst coating layer has an upstream coat layer formed from an end portion in an upstream side with respect to an exhaust gas flow direction in the exhaust gas purification catalyst and a downstream coat layer formed from an end portion in a downstream side with respect to the exhaust gas flow direction in the exhaust gas purification catalyst. The downstream coat layer includes Rh as a catalytic metal, alumina-ceria-zirconia complex oxide, and alkaline earth metal.