Gas separation – Specific media material – Ceramic or sintered
Reexamination Certificate
2007-12-18
2007-12-18
Greene, Jason M. (Department: 1724)
Gas separation
Specific media material
Ceramic or sintered
C055S282200, C055S282300, C055S385300, C055S484000, C055S524000, C055SDIG010, C055SDIG030, C060S311000
Reexamination Certificate
active
10502054
ABSTRACT:
A honeycomb filter for purifying exhaust gases, which makes it possible to alleviate a thermal stress generated due to occurrence of a local temperature change, is less likely to generate cracks, and is excellent in strength and durability. The honeycomb filter has a structure in which a plurality of column-shaped porous ceramic members, each having a number of through holes that are placed side by side in the length direction with a partition wall interposed therebetween, are combined with one another through adhesive layers so that the partition wall that separates the through holes are allowed to function as a filter for collecting particulates. A thermal expansion coefficient αLof the adhesive layer and a thermal expansion coefficient αFof the porous ceramic member is as follows:in-line-formulae description="In-line Formulae" end="lead"?0.01<|αL−αF|/αF<1.0.in-line-formulae description="In-line Formulae" end="tail"?
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Kudo Atsushi
Kunieda Masafumi
Greene Jason M.
Ibiden Co. Ltd.
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