Patent ID: 8236083

Claim:
A wall-flow honeycomb filter comprising: a ceramic monolith having a plurality of porous walls formed therein, the plurality of porous walls defining a plurality of inlet cells and a plurality of outlet cells extending between an inlet end face and an outlet end face of the monolith along a Z axis, the inlet cells being open at the inlet end face and plugged at or near the outlet end face, the outlet cells being open at the outlet end face and plugged at or near the inlet end face; the monolith having a ratio of a combined cross-sectional area of the inlet cells to a combined cross-sectional area of the outlet cells greater than 1; wherein inlet cells (I) and outlet cells (O) are arranged along an X and Y axis, wherein the X and Y axis are both orthoganol to the Z axis, in the following repeating pattern: wherein the arrows indicate the X axis and the Y axis.