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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 10767528 B1

PDFFull Text
Date of Patent:
Sep. 08, 2020

Filed:

May. 02, 2017

Three-zone diesel oxidation catlayst

Applicant:

Umicore Ag & Co. KG, Hanau-Wolfgang, DE;

Inventors:

Christoph Hengst, Butzbach, DE;

Franz Dornhaus, Hyogo, JP;

Michael Schiffer, Hanau, DE;

Assignee:

UMICORE AG & CO. KG, Hanau-Wolfgang, DE;

Attorney:

Smith, Gambrell & Russell, LLP

Primary Examiner:

Cam N Nguyen

Int. Cl.
CPC ...
B01J 21/04 (2006.01); B01J 21/06 (2006.01); B01J 21/08 (2006.01); B01J 21/12 (2006.01); B01J 23/02 (2006.01); B01J 23/10 (2006.01); B01J 23/40 (2006.01); B01J 23/42 (2006.01); B01J 23/44 (2006.01); B01J 23/58 (2006.01); B01J 23/63 (2006.01); B01J 35/00 (2006.01); B01D 53/94 (2006.01); F01N 3/035 (2006.01); F01N 3/10 (2006.01); F01N 3/20 (2006.01); B01J 37/02 (2006.01); B01J 35/04 (2006.01);
U.S. Cl.
CPC ...
F01N 3/2066 (2013.01); B01D 53/944 (2013.01); B01D 53/9468 (2013.01); B01D 53/9472 (2013.01); B01D 53/9477 (2013.01); B01J 23/58 (2013.01); B01J 23/63 (2013.01); B01J 35/0006 (2013.01); B01J 37/024 (2013.01); B01J 37/0244 (2013.01); F01N 3/035 (2013.01); F01N 3/101 (2013.01); B01D 2255/1021 (2013.01); B01D 2255/1023 (2013.01); B01D 2255/204 (2013.01); B01D 2255/2042 (2013.01); B01D 2255/2063 (2013.01); B01D 2255/2065 (2013.01); B01D 2255/2092 (2013.01); B01D 2255/20707 (2013.01); B01D 2255/908 (2013.01); B01D 2255/9022 (2013.01); B01D 2255/9035 (2013.01); B01D 2255/91 (2013.01); B01D 2255/9202 (2013.01); B01D 2257/404 (2013.01); B01D 2257/502 (2013.01); B01D 2258/012 (2013.01); B01J 21/04 (2013.01); B01J 21/063 (2013.01); B01J 21/08 (2013.01); B01J 35/04 (2013.01); B01J 2523/00 (2013.01); B01J 2523/24 (2013.01); B01J 2523/25 (2013.01); B01J 2523/3712 (2013.01); B01J 2523/824 (2013.01); B01J 2523/828 (2013.01); F01N 2330/06 (2013.01); F01N 2370/02 (2013.01); F01N 2510/0684 (2013.01);
Abstract

The invention relates to a diesel oxidation catalyst which has a support body with a length L extending between a first end face a and a second end face b and catalytically active material zones A, B, and C arranged on the support body, wherein—material zone A contains palladium or platinum and palladium in a weight ratio of Pt:Pd of ≤1 and an alkaline earth metal and extends over 20 to 80% of the length L starting from the end face a, material zone B contains ceroxide, is free of platinum, and extends over 20 to 80% of the length L starting from the end face b, material zone C contains platinum or platinum and palladium in a weight ratio of Pt:Pd of ≥5, and neither material zone A nor material zone C is arranged over material zone B.

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