Patent ID: 7641955
Filing Date: 2010-01-05
Classification: B01D,B01J,C04B,F01N,Y10T

Abstract:
1. A honeycomb structured body comprising: a pillar-shaped honeycomb block including a honeycomb unit in which a number of cells are longitudinally placed in parallel with a cell wall therebetween; and a sealing material provided on a peripheral portion of said pillar-shaped honeycomb block, wherein irregularities are formed on each peripheral face of said honeycomb structured body and said pillar-shaped honeycomb block, and said honeycomb unit comprises inorganic particles, as well as inorganic fibers and/or whiskers, and the inorganic fibers and/or whiskers increase a specific surface area of the honeycomb unit; when a least square curve is obtained by a least square method on the basis of points comprising the contour of a cross-section perpendicular to the longitudinal direction of said honeycomb structured body, a center-of-gravity of the least square curve is defined as c when a least square curve is obtained by a least square method on the basis of points comprising the contour of a cross-section perpendicular to the longitudinal direction of said honeycomb block, a center-of-gravity of the least square curve is defined as c