Did You Know...
...that Kleenex tissue was originally designed to be a gas mask filter? It was developed at the beginning of World War I to replace cotton, which was then in short supply as a surgical dressing.
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| Number | Title | Issue Date |
| 8109277 | Smoking article filter with annular restrictor and downstream ventilation 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 partia... | 02/07/2012 |
| 7987856 | Smoking article with bypass channel A smoking article having a tobacco rod of a smokable material and a filter system attached to the tobacco rod of smokable material. The filter system includes a first filter portion and a second filter portion, the second filter portion concentrically positioned wit... | 08/02/2011 |
| 7975704 | Smoking article A smoking article in which a patch of web material such as paper containing an adsorbent material therein, such as activated carbon, is positioned towards the mouth end of the smoking article to achieve a flatter puff profile compared to a conventional cigarette by ... | 07/12/2011 |
| 7874296 | Cigarette gas filter Cigarette gas filter is used to filter the gaseous components of main stream smoke. This causes reduction of the delivery of the gaseous constituents of main stream smoke (MSS). The gas filter consists of a narrow annular gap, where the outer side is circumvented by... | 01/25/2011 |
| 7762267 | Filter element The aim of the invention is to obtain filter tows or filtering materials for manufacturing filters for smoking products which make it possible to prevent or at least reduce health risks due to the release of the filter components and external contamination of cigare... | 07/27/2010 |
| 7757698 | Inhaler device An inhaler device comprises a fibrous cylindrical plug with a paper wrapper around the plug. An aromatic substance is applied along the centerline of the plug. Such substance may include eucalyptus oil or menthol. An airtight foil surrounds the paper wrapper and the... | 07/20/2010 |
| 7552735 | Activated carbon fiber cigarette filter A cigarette filter for removing gas phase constituents from mainstream cigarette smoke as the smoke is drawn through the filter primarily comprises an activated carbon fiber filter section including a bundle of activated carbon fibers. Particulate adsorbent material... | 06/30/2009 |
| 7325548 | Smoker's requisite A smoker's requisite embodies a substance selected from pharmaceutical products, food supplements, natural products and combinations thereof. The substance is embodied in the requisite such that, when the requisite is lit and smoked by a smoker, a quantity of the su... | 02/05/2008 |
| 7163015 | Opposed seam electrically heated cigarette smoking system An electrically heated cigarette smoking system includes a cigarette that is formed with a tobacco rod portion, a filter tube portion, a tobacco mat layer wrapped around the tobacco rod portion and the filter tube portion with opposite ends of the tobacco mat layer ... | 01/16/2007 |
| 7150779 | Modulated acoustic agglomeration system and method An acoustic agglomerator for agglomerating constituents in a fluid is provided. The acoustic agglomerator includes an area containing a fluid having constituents and an acoustic generator operable to generate a modulated acoustic field to enhance agglomeration of th... | 12/19/2006 |
| 7080649 | Cigarette holder A cigarett holder has a mouthpiece, a cotton filter, a main pipe, and a filter column. The mouthpiece has a distal periphery flange, a head portion, an inner tube having a through hole, and an enlarged hole communicating with the through hole. The main pipe has a fi... | 07/25/2006 |
| 7017585 | Oxidant/catalyst nanoparticles to reduce tobacco smoke constituents such as carbon monoxide Cut filler compositions, cigarettes, methods for making cigarettes and methods for smoking cigarettes are provided, which involve the use of nanoparticle additives capable of reducing at least one constituent from mainstream and/or sidestream tobacco smoke, the at l... | 03/28/2006 |
| 6997190 | Wrapping materials for smoking articles Smokable rods of cigarettes are manufactured using wrapping materials that incorporate at least one fibrous material (e.g., flax fibers, hardwood pulp fibers and/or softwood pulp fibers) at least one filler material (e.g., calcium carbonate in particulate form). The... | 02/14/2006 |
| 6976493 | Wrapping materials for smoking articles Smokable rods of cigarettes are manufactured using wrapping materials that incorporate at least one fibrous material (e.g., flax fibers, hardwood pulp fibers and/or softwood pulp fibers) at least one filler material (e.g., calcium carbonate in particulate form). The... | 12/20/2005 |
| 6929013 | Wrapping materials for smoking articles Smokable rods of cigarettes are manufactured using wrapping materials that incorporate at least one fibrous material (e.g., flax fibers, hardwood pulp fibers and/or softwood pulp fibers) at least one filler material (e.g., calcium carbonate in particulate form). The... | 08/16/2005 |
| 6907885 | High efficiency cigarette filters having shaped micro cavity fibers impregnated with adsorbent or absorbent materials This invention is a highly efficient filter containing fibers that contain small particle size adsorbents/absorbents such as carbon and/or silica to selectively reduce targeted components in mainstream cigarette smoke. The invention relates to a novel class of highl... | 06/21/2005 |
| 6848450 | Cigarette filter using intermetallic compounds A filter such as a cigarette filter having a metal reagent which selectively binds with a gaseous component of a gas stream such as tobacco smoke. The metal reagent comprises nanometer or micrometer size clusters of a transition metal or alloy containing a transitio... | 02/01/2005 |
| 6832613 | Filter cigarette A cigarette filter is surrounded by a wrapping paper, and the wrapping paper includes metal only on portion of a surface thereof, such that air can penetrate through the wrapping paper into the filter. ... | 12/21/2004 |
| 6814786 | Filters including segmented monolithic sorbent for gas-phase filtration A filter includes at least two monolithic sorbent segments and a mixing segment between the two monolithic sorbent segments. The monolithic sorbent segments comprise porous sorbent materials that are capable of selectively removing one or more selected gaseous const... | 11/09/2004 |
| 6718989 | Filter for a cigarette and a filter-tipped cigarette A filter for a cigarette and a filter-tipped cigarette having a high degree of freedom in control of filtering-efficiency of smoke are provided. The filter has a core 10 and a sheath 12 made preferably of tow of cellulose acetate fibers. A plurality of... | 04/13/2004 |
| 6718987 | Smokers′ article The present invention pertains to the tobacco industry and may be used in the production of smokers' articles that include a mouthpiece and consist of a new product that conjugates the functional properties and qualities of cigarettes with a cardboard mouthpiece and... | 04/13/2004 |
| 6422244 | Filter for a cigarette and filter cigarette A filter for a cigarette and a filter cigarette which make a smoking feeling much milder without the original cigarette taste and aroma being spoiled are provided. The cigarette filter has a filter rod 8 having an air permeable peripheral surface, and 3 t... | 07/23/2002 |
| 6371127 | Cigarette sidestream smoke and free-burn rate control device A device for minimizing cigarette sidestream smoke and reducing the free-burn rate of a burning cigarette, the device comprises: I) a non-combustible tubular element (12) encasing an effective length of a tobacco charge (22) of a cigarette (14) located in... | 04/16/2002 |
| 6273095 | Cigarette filter which removes carcinogens and toxic chemicals Disclosed herein is a filter for use with tobacco products, such as cigarettes, cigars and pipes, which selectively absorbs toxic compounds and carcinogenic polynuclear aromatic compounds passing through it, but which permits most low molecular weight spe... | 08/14/2001 |
| 6129087 | Reduced ignition propensity smoking articles A smoking article includes at least one strip of heat conducting material extending from one end of the tobacco rod of a smoking article to the opposite end of the tobacco rod. Preferably, the strip of material is at the interface between the tobacco rod ... | 10/10/2000 |
| 5979459 | Ventilated filter cigarette with a coaxial filter element The invention refers to a ventilated filter cigarette comprising a tobacco rod, a wrapper for the tobacco rod and a filter ventilated through ventilation openings, including a coaxial filter element, comprising a filter core, a wrapper for the filter core... | 11/09/1999 |
| 5954061 | Cigarette aeration and filtration device A device comprising a filter and a rod which is capable of insertion into a cigarette cord that has a preformed conduit extending concentrically along the longitudinal axis of the cord. The rod having a plurality of perforations along its entire length, a... | 09/21/1999 |
| 5944025 | Smokeless method and article utilizing catalytic heat source for controlling products of combustion A smoking article and its method of construction and operation to provide products of combustion which are used to form flavorable aerosol gases delivered to the smoker's mouth while controlling the composition of such gases of combustion. Hot gases gener... | 08/31/1999 |
| 5896860 | Smoking filter A filter for passing tobacco smoke or other gaseous material comprising two layers of material having a plurality of circuitous or serpentine passageways forming pathways through which tobacco smoke travels a distance greater than the length of the filter... | 04/27/1999 |
| 5845648 | Multi-compartment expandable filter for a smoking product A filter which will be attached to the end of a smoking product such as a cigarette. It would have a normal filter connected to the tube of tobacco, with a dual chamber which holds fine tobacco dust particles in one chamber. The other chamber would contai... | 12/08/1998 |
| 5826592 | Control of cigarette smoke chemistry A cigarette smoke filter element is provided which permits a higher level of flavor to reach the smoker during initial smoking of the cigarette and consequently an enhanced flavor-to-tar ratio, by employing an elongate filter of microfine fibers which is ... | 10/27/1998 |
| 5718250 | Low gas phase filter for cigarettes A cigarette having an improved carbon-bearing filter. A cigarette is provided with a smokable rod attached to a filter element having a region of carbon-bearing cellulose acetate tow surrounding a substantially impermeable member in the form of a hollow p... | 02/17/1998 |
| 5632286 | Crimped elements for cigarettes and the like and methods and apparatus for making same A method for forming successive spaced crimps in a tow of fibrous material by passing the tow along a path defined by an apparatus comprising a plurality of crimping wheels disposed around the path, each wheel including teeth having crimping surfaces and ... | 05/27/1997 |
| 5622190 | Concentric smoking filter having cellulose acetate tow periphery and carbon-particle-loaded web filter core A concentric smoking filter in which the peripheral filter medium is a fibrous tow, such as fibrous cellulose acetate tow, and the core filter medium is a web material, such as paper, loaded with carbon particles, is provided. The filter improves the tast... | 04/22/1997 |
| 5568819 | Cigarette filter A cigarette includes a filter element including a carbon-containing paper or a paper containing molecular sieves. The paper contacts the filter material, such as cellulose acetate tow, within the filter element, either by circumscribing the filter materia... | 10/29/1996 |
| 5549125 | Relating to smoking articles A cigarette having a region having means to reduce the vapour phase constituents of tobacco smoke, such as carbon, surrounding a tobacco smoke flow path is provided with ventilation means to channel the tobacco smoke away from the vapour phase constituent... | 08/27/1996 |
| 5524647 | Control of cigarette smoke chemistry A high level of flavour can be provided in cigarette smoke at a low tar level while providing a more uniform delivery of flavour and tar as the cigarette is smoked, in comparison to a conventional cigarette. A tobacco blend is employed using higher-than-n... | 06/11/1996 |
| 5509429 | Uniform tar delivery profile filter A tobacco smoke filter element (14) produces a more uniform tar delivery profile without an unacceptable pressure drop by causing the cigarette smoke to assume a progressively longer flow path through an outer cylinder (20) of higher flow resistance filte... | 04/23/1996 |
| 5464028 | Cigarette A vented filter cigarette with a filter having a fiber filter material and a plug wrap paper wrapping the fiber filter material, a tobacco rod, and tipping paper having a plurality of pores and connecting the filter and the tobacco rod. An embossment is f... | 11/07/1995 |
| 5458107 | Flavor cigarettes An improved flavored cigarette is provided which consists of a cylindrical paper sheet wrapper. Processed tobacco is disposed within the cylindrical paper sheet wrapper. A filter is at one end that is intended to be inserted in the mouth of a smoker. A st... | 10/17/1995 |
