Philip Morris USA Inc.

Philip Morris Inc.

Philip Morris Products S.a.

Rowland W Dwyer

San Li

Raquel M Olegario

Richard Jupe

Martin T Garthaffner

Dwight David Williams

Michael S Braunshteyn

Mike Braunshteyn

Georgios D Karles

A Clifton Lilly, Jr

Edward B Sanders

Sheryl D Baldwin

Andrew G Kallianos

Robert M Rogers

Jerry F Whidby

Barbro L Goodman

Vivian E Willis

Donald E Laslie

Barton Floyd

Arlington L Finley

Barbara G Taylor

Cecil M Smith

Gail Yoss

Deborah J Newman

A smoking article filter includes a flow restrictor and a cavity downstream of the flow restrictor. The flow restrictor includes an orifice or flow channel for directing smoke into the cavity. The filter is attached to the tobacco rod with tipping paper and includes an air-admissible ventilating zone at a location downstream of the restrictor.

Smoking article with a restrictor

A smoking article having a cylinder of smoking material and a filter system attached to the cylinder of smoking material. The filter system includes an upstream plug of filtering material, a downstream plug of filtering material, and a cavity between the upstream plug of filtering material and the downstream plug of filtering material. A flow restrictor is positioned within the cavity and has at least one orifice and a series of perforations provide ventilation to the smoking article.

Smoking article with impaction filter segment

A smoking article includes a tobacco rod adapted to produce mainstream smoke, and a filter having an upstream end portion and a downstream end portion. The filter includes a ventilated cavity and a flow restrictor segment having an impermeable insert at least partially surrounded by a tubular segment of an air transmissive material upstream of the cavity. In an embodiment, the tubular segment at least partially defines the cavity.

Smoking article filter with annular restrictor and downstream ventilation

A cigarette having a multi-component filter wherein an upstream sorbent removes at least one constituent from mainstream tobacco smoke passing through the filter and a downstream flavor segment compensates for taste lost to the sorbent. The flavor component includes cellulosic flavor bearing granules which release volatile flavor constituents into the mainstream smoke under ambient conditions. The cellulosic granules include microcrystalline cellulose or other cellulosic material which can be formed into a paste with the flavor additive, extruded and spheronized to form the flavor granules.

Cigarette and filter with cellulosic flavor addition

A paper wrapper for a cigarette is prepared using fine particle size calcium carbonate as the mineral filler for the purpose of burn rate, puff count and tar delivery control.

Cigarette and wrapper with controlled puff count

A wrapper for smoking articles having controllable combustion characteristics. The wrapper comprises cigarette paper and an amorphous inorganic network formed from a gel.

Wrapper for smoking articles and method for preparing same

Growing community of inventors

Richmond, VA, United States of America

Rowland W Dwyer