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:
Sep. 19, 2023
Filed:
Apr. 22, 2022
Applicant:
Johnson Matthey Public Limited Company, London, GB;
Inventors:
Jillian Collier, Reading, GB;
Francois Moreau, Royston, GB;
Matthew O'Brien, Royston, GB;
Paul Richard Phillips, Royston, GB;
Sanyuan Yang, Savannah, GA (US);
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D 53/94 (2006.01); B01J 29/74 (2006.01); B01J 35/04 (2006.01); F01N 3/035 (2006.01); F01N 3/08 (2006.01); F01N 3/20 (2006.01); F01N 3/28 (2006.01);
U.S. Cl.
CPC ...
B01J 29/74 (2013.01); B01D 53/944 (2013.01); B01D 53/9413 (2013.01); B01D 53/9481 (2013.01); B01J 35/04 (2013.01); F01N 3/035 (2013.01); F01N 3/0842 (2013.01); F01N 3/2066 (2013.01); F01N 3/2803 (2013.01); B01D 2255/1021 (2013.01); B01D 2255/1023 (2013.01); B01D 2255/50 (2013.01); B01D 2255/91 (2013.01); B01D 2255/9155 (2013.01); B01J 2229/18 (2013.01); F01N 2370/04 (2013.01);
Abstract
A passive NOx absorber for treating an exhaust gas from a diesel engine is described. The passive NOx absorber comprises a first washcoat region comprising a zeolite catalyst, the zeolite catalyst comprising a noble metal and a zeolite having a SAR of 2-15.