Patent 7708020 was granted and assigned to British American Tobacco on May, 2010 by the United States Patent and Trademark Office.
This invention relates to a smoking article having a controllable static burn rate by virtue of the particle size of a component of the smoking material thereof. The smoking material comprises a non-combustible inorganic filler, a binder, aerosol generating means, the non-combustible filler comprising a proportion of material having a mean particle size in the range of 500 μm to 20 μm.