Ceramic honeycomb filter and its structure

Stock material or miscellaneous articles – Structurally defined web or sheet – Honeycomb-like

Reexamination Certificate

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Details

C428S314200, C428S316600, C428S304400, C422S177000, C422S180000, C422S211000, C422S222000, C055S523000, C502S407000, C502S414000, C502S415000

Reexamination Certificate

active

06890616

ABSTRACT:
A ceramic honeycomb filter comprising a ceramic honeycomb structure having porous partition walls defining a plurality of flow paths for flowing an exhaust gas through the porous partition walls to remove particulates from the exhaust gas, wherein one end of each flow path is provided with a sealer, such that sealers of the flow paths in an inlet and an outlet of the ceramic honeycomb structure in a desired pattern; wherein the partition walls have thickness of 0.1-0.5 mm and a porosity of 50-80%; wherein the porosity of the sealers is larger than that of partition walls; and wherein the depth of the sealers is 3-15 mm.

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