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.:
Date of Patent:
Jul. 17, 2001
Filed:
Nov. 24, 1998
Applicant:
Inventors:
Kazuhide Terada, Saitama, JP;
Ken Ogawa, Saitama, JP;
Takeshi Narishige, Saitama, JP;
Tomomi Sugiyama, Saitama, JP;
Naohiro Satou, Saitama, JP;
Assignee:
Honda Giken Kogyo Kabushiki Kaisha, Tokyo, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B01J 2/300 ; B01J 2/340 ; B01J 2/342 ; B32B 9/00 ; B32B 1/504 ;
U.S. Cl.
CPC ...
B01J 2/300 ; B01J 2/340 ; B01J 2/342 ; B32B 9/00 ; B32B 1/504 ;
Abstract
A composite catalyst includes a first catalyst part containing an Ir catalyst and a second catalyst part covering the first catalyst part and containing a perovskite type composite oxide. The perovskite type composite oxide contributes mainly to oxidation reaction such as NO+O,→NO,in an atmosphere of excess oxygen while the Ir catalyst contributes mainly to reduction reaction with HC (hydrocarbon) as a reducing agent such as NO,+HC+O,→N,+CO,+H,O.