Honeycomb filter
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United States of America Patent
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Mar 20, 2018
Grant Date -
Jul 2, 2015
app pub date -
Mar 12, 2015
filing date -
Oct 4, 2012
priority date (Note) -
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Abstract
A honeycomb filter includes a plurality of honeycomb fired bodies. Each of the plurality of honeycomb fired bodies includes an outer wall, a plurality of cells, and porous cell walls. The plurality of cells include exhaust gas introduction cells each having an open end at an exhaust gas inlet side and a plugged end at an exhaust gas outlet side and exhaust gas emission cells each having an open end at the exhaust gas outlet side and a plugged end at the exhaust gas inlet side. Sub-cells adjacent to the outer wall include exhaust gas introduction sub-cells among the exhaust gas introduction cells and exhaust gas emission sub-cells among the exhaust gas emission cells. A total volume of the exhaust gas emission sub-cells adjacent to the outer wall is greater than a total volume of the exhaust gas introduction sub-cells adjacent to the outer wall.
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