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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 10029209 B1

PDFFull Text
Date of Patent:
Jul. 24, 2018

Filed:

Dec. 05, 2014

Exhaust gas purification material

Applicant:

Cataler Corporation, Kakegawa-shi, Shizuoka, JP;

Inventors:

Makoto Tsuji, Kakegawa, JP;

Hiroto Imai, Kakegawa, JP;

Shintaro Kobayashi, Kakegawa, JP;

Assignee:

CATALER CORPORATION, Kakegawa, JP;

Attorney:

Oliff PLC

Primary Examiner:

Tom P Duong

Int. Cl.
CPC ...
F01N 3/10 (2006.01); B01D 53/94 (2006.01); B01J 29/85 (2006.01); B01J 35/04 (2006.01); F01N 3/20 (2006.01); F01N 3/035 (2006.01); B01J 37/02 (2006.01); B01J 35/00 (2006.01); B01J 29/76 (2006.01); B01J 37/00 (2006.01);
U.S. Cl.
CPC ...
B01D 53/9418 (2013.01); B01D 53/9459 (2013.01); B01D 53/9472 (2013.01); B01D 53/9477 (2013.01); B01J 29/7615 (2013.01); B01J 29/85 (2013.01); B01J 35/0006 (2013.01); B01J 35/04 (2013.01); B01J 37/0244 (2013.01); B01J 37/0246 (2013.01); F01N 3/035 (2013.01); F01N 3/2066 (2013.01); B01D 2251/2067 (2013.01); B01D 2255/1021 (2013.01); B01D 2255/1025 (2013.01); B01D 2255/2073 (2013.01); B01D 2255/2092 (2013.01); B01D 2255/20738 (2013.01); B01D 2255/20761 (2013.01); B01D 2255/50 (2013.01); B01D 2255/502 (2013.01); B01D 2255/9032 (2013.01); B01D 2255/911 (2013.01); B01D 2255/9155 (2013.01); B01D 2258/012 (2013.01); B01J 37/0018 (2013.01); B01J 37/0036 (2013.01); B01J 2229/186 (2013.01); B01J 2229/42 (2013.01); F01N 2510/0682 (2013.01); Y02T 10/24 (2013.01);
Abstract

An exhaust gas purification material according to the present invention is provided with a particulate filter that traps particulate matter in exhaust gas and contains an SCR catalyst for adsorbing ammonia and reducing NOx in the exhaust gas. A maximum allowable adsorption amount of ammonia adsorbable by the filter differs between an upstream portion of the filter including an exhaust gas inlet-side end, and an downstream portion of the filter including an exhaust gas outlet-side end. A maximum allowable adsorption amount of ammonia A in the upstream portion is smaller than a maximum allowable adsorption amount of ammonia B in the downstream portion (A<B).

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