Plugged honeycomb structure

Details Plugged honeycomb structure Plugged honeycomb structure

2011-04-05

2011-04-05

Baldwin, Gordon R (Department: 1784)

Stock material or miscellaneous articles

Structurally defined web or sheet

Honeycomb-like

C428S116000, C055S523000

Reexamination Certificate

active

07919168

ABSTRACT:
A plugged honeycomb structure includes: a honeycomb structure having porous partition walls separating and forming a plurality of cells communicating between an inlet end face on an inlet side of a fluid and an outlet end face on an outlet side of the fluid, and plugging portions for plugging an opening portion of each of predetermined cells on the inlet end face and an opening portion of each of the other cells on the outlet end face. There, 1.5% or more of the plugging portions plugging the opening portions of the predetermined cells on the inlet end face have a depressed pit on the end face on the inlet end face side.

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