Patent ID: 7101601
Filing Date: 2006-09-05
Classification: B01D,B28B,C04B,F01N,Y02T,Y10T

Abstract:
1. An exhaust gas purifying filter comprising: a ceramic honeycomb structure having a surrounding wall, partition walls provided in a honeycomb pattern within the surrounding wall, and a plurality of cells partitioned by the partition walls and, at the same time, penetrating through from one end face of the ceramic honeycomb structure to the other; wherein if a virtual line is drawn on the both end faces of the ceramic honeycomb structure by continuously connecting points at a distance of 3.0 times the pitch of the cells in the direction toward the center from the inner surface of the surrounding wall, not less than 90% of the peripheral area outside the virtual line is blocked with plug material, and wherein the surrounding wall and the partition walls have a porosity of not less than 50%.