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. 30, 2021
Filed:
May. 12, 2017
Applicant:
Cataler Corporation, Shizuoka, JP;
Inventors:
Assignee:
CATALER CORPORATION, Shizuoka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01J 23/10 (2006.01); B01J 23/44 (2006.01); B01J 23/63 (2006.01); B01J 35/00 (2006.01); B01J 35/04 (2006.01); F01N 3/10 (2006.01); B01J 37/02 (2006.01);
U.S. Cl.
CPC ...
B01J 37/0244 (2013.01); B01J 23/63 (2013.01); B01J 35/0006 (2013.01); F01N 3/10 (2013.01); F01N 2370/02 (2013.01); F01N 2510/0684 (2013.01);
Abstract
An exhaust gas purification catalyst of the present invention is provided with a baseand a catalyst coat layer. The catalyst coat layer is provided with Rh and Pd as noble metal catalysts. Herein Rh is disposed in a first-stage upper layer A and a second-stage upper layer C, and Pd is disposed in the first-stage upper layer A and a first-stage lower layer B, and in a second-stage lower layer D. A mass ratio (A/A) of Pd to Rh, disposed in first-stage upper layer A is 0.5≤(A/A)≤3.