Is a
Patent attributes
Current Assignee
Patent Jurisdiction
Patent Number
Date of Patent
November 20, 2007
Patent Application Number
10506083
Date Filed
February 13, 2003
Patent Primary Examiner
Patent abstract
There is disclosed an exhaust gas purifying filter of the present invention comprising a honeycomb structure formed of a porous ceramic material and including: a large number of through-holes 3; plugged portions 10 formed in one end portion of each of predetermined through-holes 3 and in the other end portion of each of remaining through-holes 3; and partition walls 2 partitioning the through-holes 3 and formed into filter layers, characterized in that a plugging length is non-uniform for each plugged portion 10, and the filter has characteristics such as high porosity and thin wall while hardly causing defects such as chipping and falling-off of the plugged portions during packing, transporting, and handling.
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