Patent ID: 8539957

Claim:
A cigarette filter comprising an activated carbon sorbent, wherein a majority of the pores of the activated carbon sorbent have a size of less than about 30 Å, the activated carbon sorbent contains pores having a D-R micropore volume of from about 0.2 cm 3 /g to about 1.0 cm 3 /g in the pore size range of from about 5 Å to about 10 Å and pores having a D-R micropore volume of from 0.33 cm 3 /g to 0.61 cm 3 /g in the pore size range of from 10 Å to 20 Å, and the activated carbon sorbent is capable of removing nitric oxide from mainstream tobacco smoke, wherein the activated carbon sorbent is in the form of spherical beads.