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. 06, 2022
Filed:
Aug. 23, 2018
Mitsui Mining & Smelting Co., Ltd., Tokyo, JP;
Mitsui Mining & Smelting Co., Ltd., Tokyo, JP;
Abstract
The present invention provides an exhaust gas purifying catalyst including a first catalyst layer (). The first catalyst layer () includes a first section () and a second section () in an exhaust gas flow direction, the first section () being located on an upstream side in the exhaust gas flow direction relative to the second section (). The first section () and the second section () both contain a catalytically active component including a specific element. A concentration of the specific element is higher in the first section () than in the second section (). A concentration gradient of the specific element contained in the first section () in a thickness direction of the catalyst layer () is milder than a concentration gradient of the specific element contained in the second section () in the thickness direction.