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. 29, 2020
Filed:
May. 01, 2020
Applicant:
Johnson Matthey Public Limited Company, London, GB;
Inventor:
Shuhei Nagaoka, Tochigi, JP;
Assignee:
Johnson Matthey Public Limited Company, London, GB;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01J 23/42 (2006.01); B01J 35/02 (2006.01); B01J 35/00 (2006.01); B01D 53/94 (2006.01); F01N 3/10 (2006.01); B01J 21/04 (2006.01);
U.S. Cl.
CPC ...
B01J 23/42 (2013.01); B01D 53/945 (2013.01); B01J 21/04 (2013.01); B01J 35/0013 (2013.01); B01J 35/023 (2013.01); F01N 3/101 (2013.01); B01D 2255/1021 (2013.01); B01D 2255/9202 (2013.01);
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; and a first catalytic region on the substrate; wherein the first catalytic region comprises a first platinum group metal (PGM) component and a first inorganic oxide, wherein the first PGM component comprises PGM nanoparticles, wherein the PGM nanoparticles have no more than 100 PGM atoms, and wherein the PGM nanoparticles have a mean particle size of 1 nm to 10 nm with a standard deviation (SD) no more than 1 nm.