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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 9018129 B1

PDFFull Text
Date of Patent:
Apr. 28, 2015

Filed:

Dec. 12, 2013

Exhaust gas purifying catalyst and production process thereof

Applicants:

Masao Watanabe, Susono, JP;

Oji Kuno, Susono, JP;

Nobusuke Kabashima, Susono, JP;

Keisuke Kishita, Nagoya, JP;

Noboru Otake, Toyota, JP;

Hiromochi Tanaka, Toyota, JP;

Inventors:

Masao Watanabe, Susono, JP;

Oji Kuno, Susono, JP;

Nobusuke Kabashima, Susono, JP;

Keisuke Kishita, Nagoya, JP;

Noboru Otake, Toyota, JP;

Hiromochi Tanaka, Toyota, JP;

Assignee:

Toyota Jidosha Kabushiki Kaisha, Toyota-shi, Aichi, JP;

Attorney:

Finnegan, Henderson, Farabow, Garrett & Dunner, LLP

Primary Examiner:

Cam N Nguyen

Int. Cl.
CPC ...
B01J 31/00 (2006.01); B01J 37/00 (2006.01); C08F 4/02 (2006.01); C08F 4/60 (2006.01); B01J 21/00 (2006.01); B01J 21/04 (2006.01); B01J 23/02 (2006.01); B01J 23/04 (2006.01); B01J 23/06 (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); B01D 53/94 (2006.01); B01J 35/00 (2006.01); B01J 37/02 (2006.01); B01J 37/03 (2006.01); B01J 21/06 (2006.01); B01J 23/46 (2006.01); B01J 35/04 (2006.01);
U.S. Cl.
CPC ...
B01J 23/63 (2013.01); B01D 53/945 (2013.01); B01D 2255/1021 (2013.01); B01D 2255/1023 (2013.01); B01D 2255/1025 (2013.01); B01D 2255/20715 (2013.01); B01D 2255/402 (2013.01); B01D 2255/407 (2013.01); B01D 2255/9202 (2013.01); B01J 23/40 (2013.01); B01J 35/006 (2013.01); B01J 37/0217 (2013.01); B01J 37/0219 (2013.01); Y02T 10/22 (2013.01); B01J 37/038 (2013.01); B01J 21/066 (2013.01); B01J 23/42 (2013.01); B01J 23/464 (2013.01); B01J 35/0013 (2013.01); B01J 35/04 (2013.01); B01J 37/0211 (2013.01);
Abstract

Disclosed is an exhaust gas purifying catalyst in which grain growth of a noble metal particle supported on a support is suppressed. Also disclosed is a production process for producing an exhaust gas purifying catalyst. The exhaust gas purifying catalyst comprises a crystalline metal oxide support and a noble metal particle supported on the support, wherein the noble metal particle is epitaxially grown on the support, and wherein the noble metal particle is dispersed and supported on the outer and inner surfaces of the support. The process for producing an exhaust gas purifying catalyst comprises masking, in a solution, at least a part of the surface of a crystalline metal oxide support by a masking agent, introducing the support into a noble metal-containing solution containing a noble metal, and drying and firing the support and the noble metal-containing solution to support the noble metal on the support.

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