Honeycomb filter
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United States of America Patent
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Jun 23, 2009
Grant Date -
Jul 26, 2007
app pub date -
Mar 13, 2007
filing date -
Sep 28, 2005
priority date (Note) -
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Abstract
A honeycomb filter includes at least one pillar-shape honeycomb structured body including a plurality of cells partitioned by partitions, and plugs for sealing upstream openings of a plurality of first cells selected from the plurality of cells and for sealing downstream openings of a plurality of second cells selected from the plurality of cells. Each of the plugs is formed of a material having a greater total content of aluminum, iron, boron, silicon, and free carbon than a material forming the honeycomb structured body.
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