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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.:

US 12138619 B1

PDFFull Text
Date of Patent:
Nov. 12, 2024

Filed:

Mar. 19, 2020

Tunable noadsorber

Applicant:

Basf Mobile Emissions Catalysts Llc, Iselin, NJ (US);

Inventors:

Shiang Sung, New York, NY (US);

Markus Koegel, Roemerberg, DE;

Gerd Grubert, Hannover, DE;

Sven Jare Lohmeier, Hannover, DE;

Alfred Punke, Walle, DE;

Assignee:

BASF Mobile Emissions Catalysts LLC, Iselin, NJ (US);

Attorney:

DLA Piper LLP (US)

Primary Examiner:

Cam N Nguyen

Int. Cl.
CPC ...
B01J 23/10 (2006.01); B01D 53/94 (2006.01); B01J 23/42 (2006.01); B01J 23/44 (2006.01); B01J 23/46 (2006.01); B01J 23/62 (2006.01); B01J 23/63 (2006.01); B01J 23/644 (2006.01); B01J 23/656 (2006.01); B01J 35/04 (2006.01); B01J 35/56 (2024.01); B01J 37/02 (2006.01); B01J 37/03 (2006.01); F01N 3/20 (2006.01); F01N 3/28 (2006.01);
U.S. Cl.
CPC ...
B01J 23/6562 (2013.01); B01D 53/9422 (2013.01); B01D 53/9477 (2013.01); B01J 23/63 (2013.01); B01J 35/56 (2024.01); B01J 37/0201 (2013.01); B01J 37/038 (2013.01); F01N 3/2066 (2013.01); F01N 3/2803 (2013.01); B01D 2255/1023 (2013.01); B01D 2255/2047 (2013.01); B01D 2255/2065 (2013.01); B01D 2255/2073 (2013.01); B01D 2255/2094 (2013.01); B01D 2255/91 (2013.01); B01D 2255/9155 (2013.01); F01N 2370/04 (2013.01);
Abstract

The present disclosure is directed to a method for treating a gaseous exhaust stream containing nitrogen oxides (NO) from a diesel or lean-burn gasoline engine following a cold-start of the engine The method involves contact of the gaseous exhaust stream with at least a low temperature NOadsorber (LT-NA) component. The LT-NA component includes a rare earth metal component, a platinum group metal (PGM) component, and a dopant. The present disclosure is also directed to a method of modulating a NOadsorption/desorption profile of an LT-NA composition, a NOdesorption temperature range of an LT-NA composition, or both.

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