Patent ID: 8337762

Claim:
A metal substrate having open channels for treating exhaust gases of combustion engines, said substrate comprising corrugated porous sheets, wherein said porous sheet is a mesh sheet having mesh size from 30 to 300 having wires and openings, and that said wires of said porous sheet have been covered, and said openings of said porous sheet have been only partially filled by a support having the median pore size of pores from 10 to 50 nm and having the median particles size over 1.4 μm and having the area mass of said support from 20 to 200 g/m 2 and the BET specific surface area of said support is from 30 to 300 m2/g and said support additionally comprises catalytically active material, and that said metal substrate additionally comprises open channels with both sizes of said porous sheet.