Patent ID: 6800108
Filing Date: 2004-10-05
Classification: B01D,F01N,Y02T,Y10S

Abstract:
A filter of a porous ceramics sintered body having a honeycomb structure having a large number of through channels partitioned by partition walls and passing through along an axial direction, and the partition walls have a thickness and have a plurality of pores, wherein the thickness of the partition walls and the sizes of the pores are relatively varied in a corresponding relationship to each other, characterized in that when a ratio of a pore volume having a diameter of 30 &mgr;m or more to a total pore volume, measured by a method of mercury penetration, of the filter is P1 (%) and a thickness of said partition wall is T (&mgr;m), these satisfy relationship defined by the following formula:P1Ã—15&lE;T.