Patent ID: 7993740

Claim:
A honeycomb structure comprising: a plurality of honeycomb fired bodies each having a longitudinal direction and a plurality of cell walls extending along the longitudinal direction to define a plurality of cells; and an adhesive layer provided between the plurality of honeycomb fired bodies to connect the plurality of honeycomb fired bodies, pore diameters of pores in the adhesive layer being about 300 μm or less, and, in a cross-section of the adhesive layer perpendicular to the longitudinal direction, a ratio of the total area occupied by pores having a pore diameter of at least about 50 μm and at most about 300 μm and an aspect ratio of at least about 1 and at most about 1.5 relative to the total area occupied by pores having a pore diameter of at least about 50 μm and at most about 300 μm being about 90% or more.