Stock material or miscellaneous articles – Structurally defined web or sheet – Honeycomb-like
Reexamination Certificate
2005-05-10
2005-05-10
Jones, Deborah (Department: 1775)
Stock material or miscellaneous articles
Structurally defined web or sheet
Honeycomb-like
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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Yukihito Ichikawa, et al., Development of Wall-Flow Type Diesel Particulate Filter System with Efficient Reverse Pulse Air Regeneration, SAE 950735 (Preprint from Diesel Exhaust Aftertreatment 1995 (SP-1073), International Congress and Exhibition, Detroit, Michigan, held on Feb. 27-Mar. 2, 1995 by the Engineer Society of Advancing Mobility Land Sea Air and Space).
Okazaki Shunji
Otsubo Yasuhiko
Suwabe Hirohisa
Tokudome Osamu
Boss Wendy
Hitachi Metals Ltd.
Jones Deborah
Sughrue & Mion, PLLC
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