Patent ID: 7276101

Claim:
A honeycomb structure comprising: X partition walls arranged in an X-direction so as to form a plurality of cells extending to an other-end portion from a one-end portion through an axial direction, the X-direction being substantially perpendicular to the axial direction; the cells having a cell pitch in the X-direction; Y partition walls arranged in a Y-direction intersecting with the X partition walls, the Y-direction being substantially perpendicular to the axial direction and at an angle from the X-direction; plugging portions for plugging open end portions of predetermined cells among the plurality of cells in either end portion, wherein intersecting portions of the X and Y partition walls include a lacking intersecting portion in the one-end portion, the lacking intersecting portion is adjacent to a first plugging portion of the plugging portions, and the first plugging portion has a width that decreases in the axial direction toward an end surface of the honeycomb structure at the one-end portion due to a shape of the lacking intersecting portion.