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:
Dec. 24, 2024
Filed:
Oct. 27, 2021
Johnson Matthey Public Limited Company, London, GB;
Johnson Matthey (Shanghai) Chemicals Limited, Shanghai, CN;
Michael Howard, Wayne, PA (US);
Dongxia Liu, Wayne, PA (US);
Dongsheng Qiao, Shanghai, CN;
Zhou Shang, Shanghai, CN;
Maria Vlachou, Reading, GB;
Xuan Xu, Shanghai, CN;
JOHNSON MATTHEY PUBLIC LIMITED COMPANY, London, GB;
JOHNSON MATTHEY (SHANGHAI) CHEMICALS COMPANY, 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, wherein the first PGM component comprises Rh and Pt; a second catalytic region comprising a second PGM component, wherein the second PGM component comprises Pd; and wherein the first PGM component has a Pt to Rh ratio of at least 1:20.