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. 28, 2023
Filed:
Feb. 19, 2021
Johnson Matthey Public Limited Company, London, GB;
Johnson Matthey (Shanghai) Chemicals Limited, Shanghai, CN;
Hai-Ying Chen, Wayne, PA (US);
Hongyu Ji, Shanghai, CN;
Dongsheng Qiao, Shanghai, CN;
Eric Tyo, Wayne, PA (US);
Takashi Yamada, Tochigi, JP;
Xiang Zheng, Shanghai, CN;
Johnson Matthey Public Limited Company, London, GB;
Johnson Matthey (Shanghai) Chemicals Limited, Shanghai, CN;
Abstract
A three-way catalyst article, and its use in an exhaust system for internal combustion engines, is disclosed. The catalyst article for treating exhaust gas comprising: a substrate comprising an inlet end and an outlet end with an axial length L; a first catalytic region comprising a first platinum group metal (PGM) component and a first oxygen storage capacity (OSC) material, wherein the first OSC material has a fresh specific surface area (SSA) of at least 10 m/g; and wherein the first OSC material has an SSA difference of no more than 30 m/g between the fresh first OSC material and the aged first OSC material.