Gas separation – Specific media material – Ceramic or sintered
Reexamination Certificate
2006-06-06
2006-06-06
Greene, Jason M. (Department: 1724)
Gas separation
Specific media material
Ceramic or sintered
C055S282200, C055S282300, C055S385300, C055SDIG010, C055SDIG030, C060S297000, C060S299000, C060S311000, C428S116000, C428S188000, C502S439000
Reexamination Certificate
active
07056365
ABSTRACT:
A honeycomb structure in which a plurality of through-holes3extending in the axial direction are formed by a plurality of partition walls1and2, wherein the plurality of partition walls1and2are constituted by a plurality of partition walls having different thicknesses and, of the plurality of partition walls having different thicknesses, those partition walls2having a thickness larger than the average thickness of all partition walls are provided at a higher proportion in a particular portion of the honeycomb structure whole portion having partition walls than in other portion. This honeycomb structure, and a honeycomb filter and a converter system both using the honeycomb structure satisfy recent years' requirements of improvement in warm-up property connected with purification ability and reduction in harmful substance emitted right after engine start, and yet have a sufficient mechanical strength to external pressure, a high erosion resistance and a high thermal shock resistance.
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Ichikawa Yukihito
Kato Yasushi
Ogawa Masato
Greene Jason M.
NGK Insulators Ltd.
Oliff & Berridg,e PLC
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