Loews Theatres, Inc.

Lorillard Licensing Company, LLC

Arthur M Ihrig

David Williams

David A Grider

Michael A Zawadzki

Terry D Jessup

Vello Norman

David L Williams

A smoking article having reduced ignition propensity is disclosed. The smoking article includes a tobacco column, a wrapper surrounding the tobacco column and a filter element. The wrapper has a base permeability, an untreated area and a least one discrete area treated with a composition to reducing the base permeability. The discretely treated area interacts with a coal of a burning tobacco firecone as it advances to self-extinguish the smoking article. The composition of the treated area includes a permeability reducing substance, a burn rate retarding substance and a burn rate accelerating substance. Either the burn rate retarding substance or the burn rate accelerating substance acts as an organoleptic enhancing substance. In this way a smoker's experience when smoking either the at least one treated area or the untreated area is substantially the same.

Reduced ignition propensity smoking article

This invention relates to smoking articles having reduced free burn time, including cigarettes, cigars and little cigars. The smoking article comprises tobacco wrapped in a paper having at least one circumferential band printed between the ends of the smoking article; preferably at about the center of the smoking article. The band contains a substance which will cause the smoking article to extinguish in about 2-5 minutes under free burn conditions after the cone reaches the banded area if it is not puffed. The band is typically about 2-10 mm wide containing a substance which is a liquid in the temperature range of about 100.degree. C. to 200.degree. C. and which as the burning cone comes in contact with it provides a fluid film on the paper, without substantially penetrating through the surface of the paper, which film is substantially impervious to air and decomposes and/or distills endothermically from about 140.degree. C. to 300.degree. C. to yield gaseous decomposition products normally present in the smoke of smoking articles without the band. The amount of the substance used in the band should be sufficient to extinguish the smoking articles under free burn conditions within 2- 5 minutes.

Smoking articles having a reduced free burn time

An improved filter for tobacco products such as cigarettes is described, providing for selective HCN absorption. The selective adsorbant is a complex formed from a polydentate amine and a metal ion selected from the group consisting of zinc, iron (II), copper and nickel. The complex may be improved in its effectiveness by further combination with a polyalkylene oxide which acts synergistically therewith. Illustrative materials are the zinc complex of ethylenediamine employing polyethylene oxide as a synergist.

Article for the selective removal of hydrogen cyanide from tobacco smoke

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Greensboro, NC, United States of America

Arthur M Ihrig