Gas separation – Specific media material – Ceramic or sintered
Reexamination Certificate
2007-11-20
2007-11-20
Smith, Duane (Department: 1724)
Gas separation
Specific media material
Ceramic or sintered
C055SDIG030
Reexamination Certificate
active
10506083
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-holes3; plugged portions10formed in one end portion of each of predetermined through-holes3and in the other end portion of each of remaining through-holes3;and partition walls2partitioning the through-holes3and formed into filter layers, characterized in that a plugging length is non-uniform for each plugged portion10, 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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NGK Insulators Ltd.
Smith Duane
Turner Sonji
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