US Patent 7524350 Ceramic honeycomb structural body

This honeycomb structural body is made from a sintered body having a pore structure wherein pores having a pore size ranging from 1.0 μm to about 150 μm are a first pore group and pores having a pore size ranging from about 0.006 or more to less than 1.0 μm are a second pore group in a pore size distribution curve, one peak in the pore size distribution is existent in the first pore group region and plural peaks in the pore size distribution are existent in the second pore group region.