Patent ID: 7240678

Claim:
A cigarette comprising a tobacco rod and a filter element connected to the tobacco rod, said filter element having an end proximal to the tobacco rod and an end distal from the tobacco rod, wherein said filter element comprises: a first longitudinally extending section of smoke-permeable filter material positioned at the end of the filter element proximal to the tobacco rod; a second longitudinally extending section of filter material positioned at the end of the filter element distal from the tobacco rod and spaced apart from said first section of filter material, the two sections of filter material defining a compartment therebetween; and an adsorbent material contained within at least a portion of said compartment, wherein a plurality of longitudinally extending channels extend through said first section of filter material, each of said channels being adapted for passage of mainstream smoke between said tobacco rod and said compartment, wherein said plurality of channels have a total cross-sectional area of about 0.1 to about 50 mm 2 .