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.

Date of Patent:
Mar. 15, 2016

Filed:

Mar. 13, 2014
Applicant:

Basf Corporation, Florham Park, NJ (US);

Inventors:

Keshavaraja Alive, Macungie, PA (US);

Xinsheng Liu, Edison, NJ (US);

Ye Liu, Holmdel, NJ (US);

Michael P. Galligan, Cranford, NJ (US);

Pascaline Harrison Tran, Holmdel, NJ (US);

Assignee:

BASF Corporation, Florham Park, NJ (US);

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01J 23/00 (2006.01); B01J 23/02 (2006.01); B01J 23/08 (2006.01); B01J 23/10 (2006.01); B01J 23/40 (2006.01); B01J 23/42 (2006.01); B01J 23/44 (2006.01); B01J 23/56 (2006.01); B01J 21/04 (2006.01); B01J 23/63 (2006.01); B01J 37/02 (2006.01); B01J 35/00 (2006.01); B01J 35/04 (2006.01); B01D 53/94 (2006.01);
U.S. Cl.
CPC ...
B01J 23/63 (2013.01); B01D 53/945 (2013.01); B01J 35/0006 (2013.01); B01J 35/0033 (2013.01); B01J 35/04 (2013.01); B01J 37/0244 (2013.01); B01D 2255/1021 (2013.01); B01D 2255/1023 (2013.01); B01D 2255/1025 (2013.01); B01D 2255/2065 (2013.01); B01D 2255/20715 (2013.01); B01D 2255/9022 (2013.01); B01D 2258/014 (2013.01); B01J 37/0203 (2013.01); B01J 37/0248 (2013.01); B01J 2523/00 (2013.01); Y10T 428/24149 (2013.01);
Abstract

Provided herein are catalytic articles and methods of making same using a single coat process. The catalytic article comprises an elongated substrate monolith having a plurality of longitudinally extending passages, each passage having at least a first surface and a second surface opposite the first surface, the first and second surfaces coated with at least a first coating and a second coating, wherein the first coating comprises a first catalyst composition and overlies the second coating on the first surface, the second coating comprises a second catalyst composition and overlies the first coating on the second surface, and wherein the first catalyst composition and second catalyst composition have a difference in surface charge. The washcoat may be applied as one slurry, which then self-segregates into two coatings.


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