Hexagonal-cell honeycomb structure

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

Reexamination Certificate

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Reexamination Certificate

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07989047

ABSTRACT:
A hexagonal-cell honeycomb structure having a plurality of cell walls having a hexagonal shape in cross-section and forming a plurality of hexagonal cell passages, and a tubular skin layer surrounding the cell walls, The thickness of the basic cell walls is 140 μm or less and an inscribed circle diameter Da inscribed at an intersectional portion of the basic cell walls 2 and an cell pitch P having the relationship Da/P≧0.13.

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Wolfram Math World Notes on Equilateral Triangles: http://mathworld.wolfram.com/EquilateralTriangle.html.
German Office Action dated Dec. 15, 2008 issued in corresponding German Application No. 10 2006 035 309.9-41, with English translation.
Japanese Office Action dated Nov. 16, 2010 issued in corresponding Japanese Application No. 2006-181630, with English translation.

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