Patent ID: 8455391

Claim:
An exhaust gas purifying catalyst, comprising: a three-dimensional structural substrate having a plurality of cells partitioned by cell walls having first pores; and catalyst layers formed in the three-dimensional structural substrate, wherein the catalyst layers have pore-cover portions formed on surfaces of the first pores of the cell walls, and the catalyst layers of the pore-cover portions have second pores with a pore diameter of 0.1 micrometers to 10 micrometers, wherein the catalyst layers have surface-cover portions formed on surfaces of the cell walls, and the catalyst layers of the surface-cover portions have pores with a pore diameter of 0.1 micrometers to 10 micrometers, and wherein a total pore volume of pores with a pore diameter of 0.1 micrometers to 10 micrometers accounts for 5 to 30% of an entire pore volume of all pores in the exhaust gas purifying catalyst.