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. 06, 2022
Filed:
Mar. 09, 2020
Mitsui Mining & Smelting Co., Ltd., Tokyo, JP;
Yusuke Nagai, Saitama, JP;
Shingo Akita, Saitama, JP;
Hiroki Kurihara, Saitama, JP;
Yoshinori Endo, Saitama, JP;
Mitsui Mining & Smelting Co., Ltd., Tokyo, JP;
Abstract
A substrate () of an exhaust gas purification catalyst () includes inflow-side cells (), outflow-side cells (), and porous partition walls () each separating the inflow-side cell and the outflow-side cell. Catalyst portions () are provided on surfaces of the partition walls that each face the inflow-side cell and/or surfaces of the partition walls that each face the outflow-side cell. In a cross section vertical to an exhaust gas flow direction, the percentage of the total area of voids, each void satisfying the expression L/{2(πS)}≤1.1, wherein L is the perimeter of the void in the cross section and S is the area of the void in the cross section, is from 3 to 10% based on the apparent area of the catalyst portion present on the partition wall.