EXHAUST GAS-PURIFYING CATALYST
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United States of America Patent
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app pub date -
Jun 3, 2011
filing date -
Sep 10, 2008
priority date (Note) -
Abandoned
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Abstract
The exhaust gas-purifying catalyst includes a substrate provided with one or more through-holes through which exhaust gas flows, and a catalyst layer which is supported by the substrate and contains precious metals and an oxygen storage material. The exhaust gas-purifying catalyst contains a first part to which the exhaust gas is supplied, and a second part to which the exhaust gas having passed through the first part is supplied and is smaller in the content of the oxygen storage material per unit volume than that of the first part.
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