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. 11, 2025
Filed:
Jul. 11, 2022
Applicant:
Umicore Ag & Co. KG, Hanau-Wolfgang, DE;
Inventors:
Jan Schoenhaber, Darmstadt, DE;
Joerg-Michael Richter, Frankfurt, DE;
Carolin Braun, Langen, DE;
Tim Palm, Ronneburg, DE;
Assignee:
UMICORE AG & CO. KG, Hanau-Wolfgang, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F01N 3/00 (2006.01); B01J 23/10 (2006.01); F01N 3/035 (2006.01); F01N 3/08 (2006.01); F01N 3/10 (2006.01); F01N 13/00 (2010.01);
U.S. Cl.
CPC ...
F01N 13/0093 (2014.06); B01J 23/10 (2013.01); F01N 3/035 (2013.01); F01N 3/0842 (2013.01); F01N 3/101 (2013.01); F01N 2370/00 (2013.01); F01N 2510/06 (2013.01);
Abstract
The present invention is directed to the purification of exhaust gases of an internal combustion engine operated predominantly with a stoichiometric fuel mixture. The exhaust system has in particular 4 purification functions in a particular order. A three-way catalyst (TWC) near the engine is followed by a gasoline particle filter (GPF) and another three-way catalyst (TWC) downstream thereof. The system additionally has a nitrogen oxide storage function.