Patent ID: 8092579

Claim:
A ceramic honeycomb filter comprising a porous ceramic honeycomb body having an inlet end and outlet end connected by adjacent inlet and outlet channels that extend from the inlet end to the outlet end of the ceramic body, the inlet and outlet channels being defined by a plurality of interlaced thin gas filtering porous partition walls between the inlet and outlet channels and by ceramic plugs, such that the inlet channel has an inlet ceramic plug at the outlet end of the ceramic body and the outlet channel has an outlet ceramic plug at the inlet end of the ceramic body such that a fluid when entering the inlet end must pass through partition walls to exit the outlet end, wherein, within the ceramic honeycomb body there is a heat absorbing material that undergoes a reversible phase change that absorbs heat energy, said absorbing material being contained within a shell that prevents flow of the heat absorbing material within the porous honeycomb ceramic body.