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:
Sep. 17, 2019
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, Toyota, JP;
Satoru Katoh, Nagakute, JP;
Toshitaka Tanabe, Nagakute, JP;
Tetsuhiro Hirao, Kakegawa, JP;
Tatsuya Ohashi, Kakegawa, JP;
Hiroaki Naito, Kakegawa, JP;
Hirotaka Ori, Kakegawa, JP;
Michihiko Takeuchi, Kakegawa, JP;
Keiichi Narita, Kakegawa, JP;
TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota-shi, Aichi, JP;
CATALER CORPORATION, Kakegawa-shi, Shizuoka, JP;
Abstract
When the amount of coating is increased in a two-layer catalyst or the like containing two noble metals in respective different layers, gas diffusivity in the catalyst and use efficiency of a catalytic active site are reduced to thereby reduce purification performance. In view of this, an organic fiber having a predetermined shape is used as a pore-forming material in formation of an uppermost catalyst coating layer of a multi-layer catalyst, to thereby form an uppermost catalyst coating layer having a high-aspect-ratio pore excellent in connectivity and therefore excellent gas diffusivity.