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. 24, 2021
Filed:
Mar. 19, 2019
Mitsui Mining & Smelting Co., Ltd., Tokyo, JP;
Hiroki Kurihara, Saitama, JP;
Yu Sakurada, Saitama, JP;
Yusuke Nagai, Saitama, JP;
Yoshinori Endo, Saitama, JP;
Takeshi Nabemoto, Saitama, JP;
Shingo Akita, Saitama, JP;
Mitsui Mining & Smelting Co., Ltd., Tokyo, JP;
Abstract
A substrate () includes an inflow-side cell (), an outflow-side cell (), and a porous, gas-permeable partition wall () that separates the inflow-side cell () and the outflow-side cell () from each other, and also includes a first catalyst portion () that is provided on a side of the partition wall () that faces the inflow-side cell () at least at a portion in upstream side in an exhaust gas flow direction, and a second catalyst portion () that is provided on a side of the partition wall that faces the outflow-side cell at least at a portion in downstream side. With respect to a pore volume of pores with a pore size of 10 to 18 μm, when a measured value of the pore volume in the first catalyst portion () and the partition wall () within a region where the first catalyst portion () is provided is defined as a first pore volume, and a measured value of the pore volume in the second catalyst portion () and the partition wall () within a region where the second catalyst portion () is provided is defined as a second pore volume, the first pore volume is greater than the second pore volume. A catalytically active component contained in the first catalyst portion () and a catalytically active component contained in the second catalyst portion () are of different types.