US Patent 11092055 Honeycomb structure

A honeycomb structure including:a pillar-shaped honeycomb structure body,the honeycomb structure body being configured to include a circumferential portion and a central portion, whereina shape of the cells is a triangle or a hexagon having at least one symmetrical axis,in the shape of the cells, a number of the symmetrical axes is defined as A, a number of vertices of the shape of the cells is defined as N, and a value shown in a following Equation (1) is defined as θ, an arrangement direction of the cells in the circumferential portion is inclined in a range of θ−15° to θ+15° with respect to an arrangement direction of the cells in the central portion.