Stock material or miscellaneous articles – Structurally defined web or sheet – Honeycomb-like
Reexamination Certificate
2008-03-25
2008-03-25
Tarazano, D. Lawrence (Department: 4174)
Stock material or miscellaneous articles
Structurally defined web or sheet
Honeycomb-like
C055S523000, C419S041000
Reexamination Certificate
active
11098410
ABSTRACT:
A honeycomb structural body comprising: a pillar-shaped ceramic block and a sealing material provided on an outer peripheral portion of said ceramic block, each of them having irregularities formed on an outer peripheral face wherein: when a least square curve is determined by a least square method on the basis of points constituting the contour of a cross-section, a center-of-gravity is defined as c1, a distance between a minimum concentric circumscribed curve having c1and the center-of-gravity c1is defined as D1, a distance between a maximum concentric inscribed curve having c1and the center-of-gravity c1is defined as D2, and the following inequality is satisfied: about 0.3 mm≦(D1-D2); same definition is applied to said ceramic block, a center-of-gravity thereof is defined as c2, a distance between a minimum concentric circumscribed curve having c2and the center-of-gravity c2is defined as D3, a distance between a maximum concentric inscribed curve having c2and the center-of-gravity c2is defined as D4, and the following inequality is satisfied: about 0.5 mm≦(D3-D4)≦about 7.0 mm.
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Ibiden Co. Ltd.
Robinson Lauren E
Tarazano D. Lawrence
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