Patent ID: 7972407
Filing Date: 2011-07-05
Classification: B01D,B01J,C04B,F01N,Y10T

Abstract:
1. A honeycomb structure comprising: an inorganic particle; inorganic binder; a honeycomb unit comprising plural partition walls extending along a longitudinal direction of the honeycomb unit to define through-holes; a first end face substantially perpendicular to the longitudinal direction and provided at a first end of the honeycomb structure; and a second end face substantially perpendicular to the longitudinal direction and provided at a second end opposite to the first end in the longitudinal direction of the honeycomb structure, first circularity of the first end face and second circularity of the second end face being about 1.5 mm to about 4.0 mm, the circularity of the first end face being different from the circularity of the second end face, wherein an absolute value of a difference between the first circularity and the second circularity is about 1.0 mm to about 2.0 mm.