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. 24, 2023
Filed:
Mar. 24, 2021
Isao Chinzei, Toyota, JP;
Takahiro Nishio, Toyota, JP;
Shogo Shirakawa, Toyota, JP;
Masahide Miura, Toyota, JP;
Hiromasa Suzuki, Toyota, JP;
Yuki Kido, Kakegawa, JP;
Minoru Ito, Kakegawa, JP;
Sho Hoshino, Kakegawa, JP;
Shin Nakayama, Kakegawa, JP;
Isao Chinzei, Toyota, JP;
Takahiro Nishio, Toyota, JP;
Shogo Shirakawa, Toyota, JP;
Masahide Miura, Toyota, JP;
Hiromasa Suzuki, Toyota, JP;
Yuki Kido, Kakegawa, JP;
Minoru Ito, Kakegawa, JP;
Sho Hoshino, Kakegawa, JP;
Shin Nakayama, Kakegawa, JP;
TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota, JP;
CATALER CORPORATION, Kakegawa, JP;
Abstract
Provided is an exhaust gas purification catalyst capable of reducing a noble metal amount while maintaining a catalyst performance, which comprises a substrate and at least three catalyst coating layers formed on the substrate, the first and third catalyst coating layers contain Pd as a catalyst metal and are formed in a range of a predetermined length from an upstream end surface in an exhaust gas flow direction, and the second catalyst coating layer contains Rh as a catalyst metal and is formed in a range of a predetermined length from a downstream end surface in the exhaust gas flow direction.