Philip Morris Inc.

Philip Morris USA Inc.

Philip Morris Products S.a.

John R Hearn

Harry V Lanzillotti

D Bruce Losee

Charles R Hayward

Walter Allen Nichols

A Clifton Lilly, Jr

Edward B Sanders

Jay A Fournier

F Murphy Sprinkel, Jr

Kenneth S Houghton

Jerry F Whidby

Mark A Serrano

John Mathew Adams

Norman B Rainer

Susan E Wrenn

Grier S Fleischhauer

Willie G Houck, Jr

William J Crowe

Robert L Ripley

Robert E Lee

Constance H Morgan

Richard A Thesing

Zuyin Yang

George H Burnett

Brett W Stevenson

Alex S Gergely

James D Baggett, Jr

Bruce E Waymack

Johnny L Miller

Leo C Lanzel

David E Merrill

William S Nystrom

Vincent Lanzillotti

Steven J Larson

John R Hairfield, Jr

John R Hairfield

James D Baggett

A cigarette includes an ignition element in contact with tobacco, surrounded by a composite outer wrapper. The outer wrapper is impervious to oxygen causing the tobacco to extinguish between puffs. The ignition element, however, has a longer static burn time than the tobacco and remains smoldering between puffs. Upon a subsequent puff, the smoldering ignition element re-ignites the tobacco. One or more initially-occluded perforations in the outer layer maintain the uniformity in combustion of the tobacco and ignition element.

Cigarette having reduced sidestream smoke

A cigarette includes an ignition element in contact with tobacco, surrounded by a composite outer wrapper. The outer wrapper is impervious to oxygen causing the tobacco to extinguish between puffs. The ignition element, however, has a longer static burn time than the tobacco and remains smoldering between puffs. Upon a subsequent puff, the smoldering ignition element re-ignites the tobacco. One or more initially-occluded perforations in the outer layer maintain the uniformity in combustion of the tobacco and the ignition element.

A smoking article comprises a smoking accessory and a cigarette. The smoking accessory includes a holder and a substantially air-impermeable sleeve which is coupled to a distal portion of the holder and is coaxial therewith. The cigarette is received in the smoking accessory such that a distal end of the cigarette is located substantially flush with a distal end of the sleeve. The cigarette includes a column of tobacco which is shorter than that used in conventional cigarettes, e.g., 20 mm in length or less. An air gap separates an outer surface of the cigarette from the sleeve, and plural openings are formed in the sleeve to supply air to the cigarette. In use, the sleeve restricts the flow of air to the cigarette, thereby slowing combustion and reducing sidestream smoke between puffs.

Smoking article having reduced sidestream smoke

A smoking article in which a flavored aerosol is generated by heat transfer to a flavor bed from the combustion of a heat source is provided. The article generates substantially no sidestream smoke. The transfer of heat from the heat source to the flavor bed is accomplished by convective and radiative heat transfer.

Smoking article

A smoking article in which a flavored aerosol is generated by heat transfer to a flavor bed from the combustion of a carbon heat source is provided wherein the carbon heat source and the flavor bed are contained within a non-combustible substantially cylindrical hollow ceramic sleeve. The article generates substantially no sidestream smoke. The transfer of heat from the heat source is accomplished by convective and radiative heat transfer.

A carbonaceous heat source for a smoking article is provided. The heat source is designed to maximize heat transfer to a flavor bed in the smoking article. The heat source undergoes substantially complete combustion leaving minimal residual ash, has a relatively low degree of thermal conductivity and ignites under normal lighting conditions for a conventional cigarette.

Carbon heat source

The present invention relates to a process for producing a tasteless carbon heat source from a preformed article of a ligno-cellulosic material according to which the article is pyrolyzed in a continuously exchanged inert atmosphere at a temperature within the range of from about 800.degree. to about 1100.degree. C., for from about 0.5 to about 3 hours, then cooled in the inert atmosphere at a rate of from about 500.degree. to about 10.degree. C. per hour to a temperature within the range of from about 275.degree. C. to about 25.degree. C., and then subjected to at least one additional process step selected from an oxygen absorption step, a salt impregnation followed by heat treatment step, and a water desorption step. The present invention also relates to a smoking article including the carbon heat source, and a flavor generator comprising a substrate material containing at least one thermally releasable flavorant.

Process for making a carbon heat source and smoking article including

A smoking article in which a flavored aerosol is generated by heat transfer to a flavor bed from the combustion of a carbon heat source is provided. The article generates substantially no sidestream smoke. The transfer of heat from the heat source to the flavor bed is accomplished by convective and radiative heat transfer.

A flavor source to be used as a thermally releasable flavorant for smoking articles that do not combust tobacco. The material includes tobacco particles, an aerosol precursor that forms an aerosol upon exposure to heat, and a filler material that absorbs and radiates heat to minimize the likelihood that the flavor material will ignite. The material is mixed in an extruder, extruded through a die, and cut into pellets having a substantially uniform shape. The pellets are loaded into a chamber for inclusion in a smoking article as a flavor generator.

Thermally releasable flavor source for smoking articles

An improved process for expanding tobacco is disclosed wherein tobacco components such as stems, midribs and veins are contacted with an alkaline-hydrogen peroxide solution to effect expansion, washed and then dried and/or roasted to produce an expanded tobacco material highly suitable for use in smoking products. Prior to contact with the alkaline hydrogen peroxide solution, the tobacco materials are subjected to a pretreatment step with gaseous ozone to prevent clumping and/or interadherence of the tobacco shreds which would otherwise occur during the drying step.

Process for expanding tobacco

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Midlothian, VA, United States of America

John R Hearn