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:
Mar. 14, 2023
Filed:
Feb. 18, 2021
Koji Sugiura, Toyota, JP;
Hiromasa Nishioka, Toyota, JP;
Naoto Miyoshi, Toyota, JP;
Akemi Sato, Toyota, JP;
Ryota Nakashima, Kakegawa, JP;
Masatoshi Ikebe, Kakegawa, JP;
Keisuke Murawaki, Kakegawa, JP;
Hirotaka Ori, Kakegawa, JP;
Koji Sugiura, Toyota, JP;
Hiromasa Nishioka, Toyota, JP;
Naoto Miyoshi, Toyota, JP;
Akemi Sato, Toyota, JP;
Ryota Nakashima, Kakegawa, JP;
Masatoshi Ikebe, Kakegawa, JP;
Keisuke Murawaki, Kakegawa, JP;
Hirotaka Ori, Kakegawa, JP;
TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota, JP;
CATALER CORPORATION, Kakegawa, JP;
Abstract
Provided is an exhaust gas purification device that ensures an improved purification performance and a suppressed pressure loss. An exhaust gas purification device of the present disclosure includes a honeycomb substrate and an inflow cell side catalyst layer. disposed on a surface on the inflow cell side in an inflow side region of the partition wall. When a gas permeability coefficient of an inflow side partition wall portion including the inflow side region of the partition wall and the inflow cell side catalyst layer is Ka and a gas permeability coefficient of an outflow side partition wall portion including an outflow side region at least from the predetermined position to an outflow side end of the partition wall is Kb, a ratio Ka/Kb of the gas permeability coefficients is within a range of 0.4 or more and 0.8 or less.