Stock material or miscellaneous articles – Structurally defined web or sheet – Honeycomb-like
Reexamination Certificate
2006-05-09
2006-05-09
Xu, Ling X. (Department: 1775)
Stock material or miscellaneous articles
Structurally defined web or sheet
Honeycomb-like
C428S034400, C428S188000
Reexamination Certificate
active
07041358
ABSTRACT:
A honeycomb structure1having numerous through channels passing through along the X axis and being partitioned with porous partition walls2which is characterized in that: a total pore volume (D) cc/g in end portions of the partition walls2is smaller than the total pore volume in other portions of partition walls2;and relationships between the total pore volume (D) cc/g in end portions and the partition wall thickness (B) μm and cell pitch (C) mm in other portions of partition walls are defined as; the total pore volume (D)≦the partition wall thickness (B)×0.004, and the total pore volume (D)≦(1/the cell pitch (C))×0.18; and a method of producing a honeycomb structure. There is provided with the honeycomb structures1having various cell structures and being reinforced at their end portions, with exhibiting satisfactory and practical erosion resistance.
REFERENCES:
patent: 5124303 (1992-06-01), Kobayashi et al.
patent: 6242072 (2001-06-01), Ueda et al.
patent: A 2000-51710 (2000-02-01), None
patent: A 2001-199777 (2001-07-01), None
patent: A 2001-226173 (2001-08-01), None
patent: A 2002-121085 (2002-04-01), None
Noda Naomi
Suzuki Junichi
NGK Insulators Ltd.
Oliff & Berridg,e PLC
Xu Ling X.
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