Patent ID: 8178185

Claim:
A honeycomb structured body, comprising: a plurality of porous ceramic members bonded together; an adhesive layer interposed between adjacent porous ceramic members, each of the porous ceramic members having a plurality of cells placed in parallel with one another in a longitudinal direction, cell walls interposed between adjacent cells, an outer edge wall on an outer edge surface thereof, corner portions of the cells defined either solely by said outer edge wall or by said outer edge wall and said cell wall, and a filling body being disposed in at least one corner portion of at least one outermost cell in each of the porous ceramic members, wherein a first profile of the outermost cell at a cross-section perpendicular to the longitudinal direction of said cells is approximately a tetragon, and a second profile of the outermost cell at the same cross-section perpendicular to the longitudinal direction of said cells is approximately a right triangle, and wherein a first length of one side of said right triangle is at least about 5% and at most about 40% of a second length of one side of said tetragon.