Is a
Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
October 18, 2011
Patent Application Number
12635943
Date Filed
December 11, 2009
Patent Citations Received
Patent Primary Examiner
Patent abstract
A high exhaust gas-purifying performance is achieved. An exhaust gas-purifying catalyst includes a substrate, a lower layer covering the substrate and including an oxygen storage material and palladium, and an upper layer covering the lower layer and including rhodium and a carrier supporting it. The lower layer is rhodium-free. The upper layer has an oxygen storage capacity lower than that of the lower layer.
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