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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 11396837 B1

PDFFull Text
Date of Patent:
Jul. 26, 2022

Filed:

Aug. 28, 2020

Exhaust gas cleaning catalyst

Applicant:

Toyota Jidosha Kabushiki Kaisha, Toyota, JP;

Inventors:

Eriko Yoshimoto, Toyota, JP;

Masahide Miura, Toyota, JP;

Takahiro Nishio, Toyota, JP;

Assignee:

TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota, JP;

Attorney:

Oliff PLC

Primary Examiner:

Cam N Nguyen

Int. Cl.
CPC ...
B01J 21/06 (2006.01); B01J 23/42 (2006.01); B01J 23/63 (2006.01); B01J 23/83 (2006.01); B01J 35/00 (2006.01); B01J 35/04 (2006.01); F01N 3/28 (2006.01); B01D 53/94 (2006.01);
U.S. Cl.
CPC ...
F01N 3/2803 (2013.01); B01D 53/9472 (2013.01); B01J 23/42 (2013.01); B01J 23/63 (2013.01); B01J 23/83 (2013.01); B01J 35/0006 (2013.01); B01J 35/04 (2013.01); B01D 2255/1021 (2013.01); B01D 2255/1025 (2013.01); B01D 2255/20738 (2013.01); B01D 2255/908 (2013.01); B01D 2255/9035 (2013.01); B01D 2255/9155 (2013.01); F01N 2330/02 (2013.01); F01N 2330/30 (2013.01); F01N 2370/02 (2013.01);
Abstract

The present disclosure relates to an exhaust gas cleaning catalyst having a substrate and a catalyst coating layer coated on the substrate, in which the catalyst coating layer has an upstream-side coating layer formed from the upstream-side end portion of the exhaust gas cleaning catalyst in an exhaust gas flow direction and a downstream-side coating layer formed from the downstream-side end portion of the exhaust gas cleaning catalyst in the exhaust gas flow direction, when the upstream-side coating layer and the downstream-side coating layer overlap each other, the upstream-side coating layer is disposed on the downstream-side coating layer, and the upstream-side coating layer contains a catalytic metal and a ZrO—CeOcomposite oxide in which Fe forms a solid solution.

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