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. 04, 2020
Filed:
Mar. 24, 2016
Toyota Jidosha Kabushiki Kaisha, Toyota-shi, Aichi-ken, JP;
Cataler Corporation, Kakegawa-shi, Shizuoka-ken, JP;
Hiromasa Suzuki, Toyota, JP;
Masahide Miura, Toyota, JP;
Yoshinori Saito, Kakegawa, JP;
Satoru Katoh, Nagakute, JP;
Toshitaka Tanabe, Nagakute, JP;
Tetsuhiro Hirao, Toyota, JP;
Tatsuya Ohashi, Kakegawa, JP;
Hiroaki Naito, Kikugawa, JP;
Hirotaka Ori, Kakegawa, JP;
Michihiko Takeuchi, Kakegawa, JP;
Keiichi Narita, Kakegawa, JP;
TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota-shi, Aichi-ken, JP;
CATALER CORPORATION, Kakegawa-shi, Shizuoka, JP;
Abstract
The problem of the present invention is to provide an exhaust gas purification catalyst which can exhibit sufficient purification performance under a high Ga condition while having a resistance to stress such as high-temperature and poisonous substances. The present invention relates to an exhaust gas purification catalyst comprising two or more catalyst coating layers on a substrate, wherein a lower catalyst coating layer that is present lower with respect to an uppermost catalyst coating layer has a structure where a large number of voids are included and high-aspect-ratio pores having an aspect ratio of 5 or more account for a certain proportion or more of the whole volume of voids, thereby to improve gas diffusivity in the lower catalyst coating layer.