Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Danan Dou0
Ming Wei0
Date of Patent
May 20, 2008
0Patent Application Number
106259180
Date Filed
July 23, 2003
0Patent Primary Examiner
Patent abstract
A treatment element and an exhaust emission control device for the treatment of gases in an exhaust passage of an internal combustion engine and methods of making thereof are described. In the method, at least two different catalyst compositions are applied along the major axis length of a single substrate to form a treatment element having at least two different zones of catalyst composition.
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