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| Number | Title | Issue Date |
| 7300394 | Method and device for producing a filter rod Method and device for producing a filter rod. The method includes melting at least one first type of filter material, pressing the at least one first type of filter material through at least one nozzle, depositing the at least one first type of filter material on a ... | 11/27/2007 |
| 7243659 | Recess filter and smokeable article containing a recess filter The invention relates to a recess filter with a cavity associated with the mouth and provided with a cavity wall, in addition to one or more filter elements associated with the tobacco. The cavity wall surrounds either the cavity or the cavity and, at the most, one ... | 07/17/2007 |
| 7237558 | Filtered cigarette incorporating an adsorbent material A filter element incorporating an adsorbent material is provided. The filter element may comprise a first section of filter material and a second section of filter material spaced apart to form a compartment therebetween. The compartment may be filled with one or mo... | 07/03/2007 |
| 7228861 | Cigarette filter A cigarette filter has filter sections including filter materials individually wrapped with plug wrap paper, forming paper for wrapping the filter sections integrally, and tipping paper covering the forming paper so as to connect the filter sections to a cigarette s... | 06/12/2007 |
| 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 |
| 7025067 | Activated charcoal filter for effectively reducing p-benzosemiquinone from the mainstream cigarette smoke A filter for tobacco smoke inhaling/generating/producing device, comprising stipulated amounts of specific grain sizes or combination of grain sizes of activated charcoal for effectively reducing from the mainstream smoke the level of p-benzosemiquinone (p-BSQ), a r... | 04/11/2006 |
| 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 |
| 6857431 | Nanocomposite copper-ceria catalysts for low temperature or near-ambient temperature catalysis and methods for making such catalysts Nanocomposite copper-ceria catalysts are provided, which comprise copper oxide nanoparticles, copper nanoparticles, or a mixture thereof combined with ceria nanoparticles. Methods for making such catalysts are also provided, which involve the steps of (i) combining ... | 02/22/2005 |
| 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 |
| 6779529 | Cigarette filter A cigarette filter includes a multiple section filter which reduces the level of predetermined smoke constituents. The filter includes a fibrous filter plug section, a selective adsorbent section, and a general adsorbent section co-axially aligned in tandem. The sel... | 08/24/2004 |
| 6772768 | Cigarette filters of shaped micro cavity fibers impregnated with flavorant materials Tobacco flavorants loaded into semi-open micro cavities of shaped fibers add flavor to tobacco smoke during the smoking process. The shaped fibers are end-capped shaped multi-lobals that form semi-open cavities between the lobals to effectively entrain solid and liq... | 08/10/2004 |
| 6761174 | Cigarette and filter with downstream flavor addition A cigarette comprises a tobacco rod and a multi-component filter comprising a bed of adsorbent and a flavor-releasing filter segment located downstream of the bed of adsorbent. In the preferred embodiment, the adsorbent is also flavor-bearing and comprises high surf... | 07/13/2004 |
| 6745777 | Tobacco filter means superimposedly rechargeably filled with disposable filter units A tobacco filter device includes a plurality of filter units superimposedly rechargeably filled in a sleeve member, having a bowl member connected to an outer end (smoking end) of the sleeve member and a mouthpiece connected to an inner end (mouth end) of the sleeve... | 06/08/2004 |
| 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 |
| 6615843 | Tobacco smoke filter and relative composition made of antioxidant and mineral substances A tobacco smoke filter synergist composition is provided comprised of antioxidants and minerals: the former are effective as free radical scavenger and the latter are capable of reducing the other harmful substances from tobacco smoke. In particular, mine... | 09/09/2003 |
| 6591839 | Filter material for reducing harmful substances in tobacco smoke A filter material for reducing the content of harmful substances in tobacco smoke. The filter material comprises a ground and not additionally activated expanded clay produced without adding foreign substances, and zeolite as the filter material. The filt... | 07/15/2003 |
| 6576034 | Method and apparatus for spinning a web of mixed fibers, and products produced therefrom A fiber spinning device and process for manufacturing a web of fibers including a homogeneous mixture of fibers of different characteristics. Monocomponent fibers of different polymers can be extruded side-by-side from the same die system. Sheath/core bic... | 06/10/2003 |
| 6481442 | Smoking article including a filter for selectively removing carbonyls A smoking article including a wrapper surrounding a tobacco column and a selective filter element is disclosed. The selective filter element includes at least one carrier having a developed structure and a plurality of moieties capable of the nucleophilic... | 11/19/2002 |
| 6367481 | 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 t... | 04/09/2002 |
| 6309509 | Composition and paper comprising cellulose ester, alkylpolyglycosides, and cellulose This invention relates to compositions, paper, thermoplastic sheets, and medical paper containing cellulose ester, alkylpolyglycoside (APG) or a mixture of APG and polyether glycol, and, optionally, cellulose. The process of incorporating APG or a mixture... | 10/30/2001 |
| 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 |
| 6257242 | Filter element A filter element for reducing or eliminating the harmful vapor phase components of air or smoke. The filter element includes a first section and a second section. The first section is positioned relative to and in fluid communication with the second secti... | 07/10/2001 |
| 6257243 | Smoking articles The invention relates to a coaxial smoking article, particularly a coaxial cigarette, comprising a coaxial rod of smokable material, which rod has an inner segment (1) of smokable material surrounded by a covering (2), around which covering is an outer se... | 07/10/2001 |
| 6207601 | Melt-blown nonwoven fabric, process for producing same and the uses thereof The disclosure relates to a melt-blown non-woven fabric based on cellulose esters, with fibers of mean diameter less than about 10 microns. The fabric contains 0-10 wt. % extractable softener, has a reflection factor determined according to DIN 53 145 Par... | 03/27/2001 |
| 6206007 | Cigarette with a dual-structure filter A cigarette with a dual-structure filter includes a dual-structure filter having a first filter element and a second filter element arranged downstream of the first filter element, a tobacco rod arranged upstream of the filter, and a tip paper covering a ... | 03/27/2001 |
| 6202650 | Filter-tipped cigarette and filter for a cigarette A filter-tipped cigarette includes a tobacco portion having a tobacco material wrapped by a cigarette paper, and a filter portion which is connected to the tobacco portion. The filter portion has a filter body composed of a plurality of individual filter ... | 03/20/2001 |
| 6193841 | Shaped, plastic articles comprising a cellulose fiber, a cellulose ester, and a non-ionic surfactant This invention relates to compositions, paper, thermoplastic sheets, and medical paper containing cellulose ester, alkylpolyglycoside (APG) or a mixture of APG and polyether glycol, and, optionally, cellulose. The process of incorporating APG or a mixture... | 02/27/2001 |
| 6119699 | Method and apparatus for the selective removal of specific components from smoke condensates A smoking article capable of delivering a regulated smoke composition to a smoker, includes: a) a combustible filler wrapped in a combustible sheath; and b) at least one affinity chromatographic filter unit designed to preferentially remove specific targe... | 09/19/2000 |
| 6089238 | Ultralight coaxial cigarette including a multipart filter The invention relates to a coaxial cigarette including a coaxial tobacco rod comprising a rod core, a rod core wrapping, a rod jacket and a rod jacket wrapping and a multi-part ventilated filter wherein the filter comprises a filter wrapping as well as at... | 07/18/2000 |
| 6026819 | Tobacco smoke filter incorporating sheath-core bicomponent fibers and tobacco smoke product made therefrom Bicomponent fibers comprising a core of a thermoplastic material, preferably polypropylene, and a sheath of a blend of the core-forming polymer and an ethylene-vinyl acetate copolymer are used to produce tobacco smoke filter elements which may be incorpor... | 02/22/2000 |
| 5967149 | Tobacco filter material and a method of producing the same Using a slurry containing a particulate or fibrous cellulose ester and a wood pulp with a Canadian standard freeness of 100 to 800 ml in a ratio of 10/90 to 90/10 (weight %), a tobacco filter material in the form of a sheet having a nonwoven web structure... | 10/19/1999 |
| 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 |
| 5913311 | Cigarette filter and filter material therefor A filter material comprises a cellulose acetate fiber tow containing 5-50% by weight of a water soluble material and/or a water dispersible material which are soluble in a solvent which dissolves cellulose acetate and which are not compatible with cellulo... | 06/22/1999 |
| 5911224 | Biodegradable polyvinyl alcohol tobacco smoke filters, tobacco smoke products incorporating such filters, and methods and apparatus for making same A porous element particularly for use as a tobacco smoke filter plug in association with a cigarette or the like wherein the matrix comprises a multiplicity of biodegradable polyvinyl alcohol fibers bonded together at their points of contact to define a t... | 06/15/1999 |
| 5839449 | Low CO cigarette A cigarette smoking article achieves very low levels of CO and other gas phase components by means of substantial air dilution, but has an acceptable pressure drop and sufficient delivery of particulate matter to provide a flavorful smoke. The filter has ... | 11/24/1998 |
| 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 |
| 5810020 | Process for removing nitrogen-containing anions and tobacco-specific nitrosamines from tobacco products There is disclosed a process for denitrifying tobacco materials and removing barium from tobacco materials, comprising mixing an aqueous-immiscible organic solvent containing a crown ether with an aqueous solution containing soluble components from tobacc... | 09/22/1998 |
| 5758669 | Tobacco filters and production process thereof Water disintegratability of a tobacco filter is improved by incorporating a super absorbent resin into a tobacco smoke filter medium in a tobacco filter comprising a main constitutive element of the tobacco smoke filter medium, and a water-soluble polymer... | 06/02/1998 |
| 5738120 | Smoking articles A smoking article comprising a smoking rod, a filter and ventilation means incorporated in the filter and communicating with the outside of the smoking article, viscous fluid in the ventilation means closing or partially closing the ventilation means, the... | 04/14/1998 |
| 5727573 | Smoker's article The smoker's article comprises a filter, a tobacco rod and a wrapper. The tobacco rod contains a catalyst consisting of a hydrated zeolite or a zeolite-like molecular sieve, the said zeolite or zeolite-like material being defined by the following formula:... | 03/17/1998 |
