Interior Surface Causes Particular Flow Characteristic Patents (Class 131/339)
  • Patent number: 10165794
    Abstract: The present invention relates to a smoking article (8) comprising a smokeable material and a mouthpiece (1), the mouthpiece comprising at least three segments (2, 3, 5) in axial alignment. One segment defining a cavity (5) is disposed between two other segments (2, 3) and a fluid-containing breakable capsule (6) is arranged in the cavity. A first wrapper (4) circumscribes at least the cavity, wherein the first wrapper comprises a substantially smooth transparent section overlaying at least a part of the cavity, such that the capsule is at least partially visible through the first wrapper. The first wrapper has one or more layers of transparent varnish applied thereto. The invention further relates to a mouthpiece for a smoking article and a method of producing a smoking article.
    Type: Grant
    Filed: November 6, 2012
    Date of Patent: January 1, 2019
    Assignee: Philip Morris Products S.A.
    Inventors: Clement Besso, Alexandre Camus, Dorothy Tritz, Charles Kuersteiner
  • Patent number: 9872517
    Abstract: A tip for a smoking article such as a cigar is disclosed. The tip comprises a longitudinally extending element comprising a plurality of bicomponent fibers which define at least one channel extending longitudinally of the element.
    Type: Grant
    Filed: October 22, 2013
    Date of Patent: January 23, 2018
    Assignee: ESSENTRA FILTER PRODUCTS DEVELOPMENT CO. PTE. LTD.
    Inventors: James D. Reed, Bennett C. Ward
  • Patent number: 9861124
    Abstract: The present invention relates to an independent, tobacco addiction-dispelling and tobacco toxicity-detoxifying filter, and a process for preparing the same. Said process is characterized in enabling organic substances in tea leaves to exude by air entraining and heating, immersing with a suitable amount of water and stirring, enhancing the effect on dispelling tobacco addiction and detoxifying tobacco toxicity, adding a part of celluloses by using the adhesiveness and water resistant effect of the exuded organic substances to produce tea powder, tea slices and tea particles; packaging the tea powder, tea slices, tea particles and active substances and additives within the filter via a device to form a cigarette holder, a cigarette filter rod or a cigarette holder bullet core having an absorbing resistance controlled to be within the applicable scope.
    Type: Grant
    Filed: July 6, 2009
    Date of Patent: January 9, 2018
    Inventors: Yonglin Liang, Baolu Zhao, Ran Tao, Xingyi Liang
  • Patent number: 9730470
    Abstract: A filter (11) for a smoking article (10) comprises a first flow path (13) through the filter, a second flow path (14) through the filter, the second flow path being disposed around the first flow path, and a selector (16) for allowing flow selectively through the first and second flow paths.
    Type: Grant
    Filed: May 11, 2012
    Date of Patent: August 15, 2017
    Assignee: BRITISH AMERICAN TOBACCO (INVESTMENTS) LIMITED
    Inventors: Mark Bailey, Karl Kaljura, Paul Farenden, David Russell, Wilbert Schoenmakers, Darren Seymour, David Spendlove
  • Patent number: 9732475
    Abstract: The present invention relates to a composition for coating paper wrapper for smoking articles, which comprises a combination of gum arabic, preferably between 40% and 95% by weight with respect to the total dry material weight of the composition, and a filler that comprises calcium carbonate, preferably in an amount of at least 5% by weight with respect to the dry material weight of the composition, alone or in combination with other substances such as, for example, kaolin, calcium sulphate, titanium dioxide and mixtures thereof, and to the use thereof for producing a paper wrapper for smoking articles.
    Type: Grant
    Filed: April 3, 2012
    Date of Patent: August 15, 2017
    Assignee: MIQUEL Y COSTAS & MIQUEL, S.A.
    Inventors: Agustin Tosas Fuentes, Pablo De Mariscal Ruigomez
  • Patent number: 9510623
    Abstract: An electronic cigarette includes a liquid supply including liquid material, a heater operable to heat the liquid material to a temperature sufficient to vaporize the liquid material and form an aerosol, a wick in communication with the liquid material and in communication with the heater such that the wick delivers the liquid material to the heater, at least one air inlet operable to deliver air to a central air passage upstream of the heater, and a mouth end insert having at least two diverging outlets. The electronic cigarette can also include an air flow diverter which directs incoming air away from a heating zone of the heater.
    Type: Grant
    Filed: January 31, 2013
    Date of Patent: December 6, 2016
    Assignee: Altria Client Services LLC
    Inventors: Christopher S. Tucker, Geoffrey Brandon Jordan, Barry S. Smith, Ali A. Rostami, Charles E. B. Glenn, Sr.
  • Patent number: 9185935
    Abstract: The present invention relates to improvements in filters for use in smoking articles such as cigarettes, cigars and cigarillos. The improvements, particularly but not exclusively, relate to filter capabilities and to the manufacture of such filters. In one example, a filter for a smoking article comprises randomly oriented discrete short length fibres of absorbent having adsorbent particles dispersed therein. The invention also provides a filter for a smoking article comprising various other filter arrangements including absorbent and/or adsorbent materials.
    Type: Grant
    Filed: May 2, 2013
    Date of Patent: November 17, 2015
    Assignee: British American Tobacco (Invesments) Limited
    Inventors: David Lewis, Andrew Davis, John Richardson, John Major, John Sampson
  • Patent number: 9034106
    Abstract: A smoking composition for inclusion in a combustible smoking article includes a combustible organic material, such as tobacco and/or tobacco substitutes and at least one alkanoylated glycoside for enhancing the flavor of mainstream smoke. Optionally, dry hops extract can also be included in the smoking composition.
    Type: Grant
    Filed: March 26, 2010
    Date of Patent: May 19, 2015
    Assignee: Philip Morris USA Inc.
    Inventors: W. Geoffrey Chan, Christophe Galopin, Andreas Czepa, Mike Nuckols, Beverley Woodson
  • Patent number: 8997755
    Abstract: The invention provides a filter element of a smoking article having a longitudinal axis and adapted for filtration of mainstream smoke generated by the smoking article, the filter element including a first region extending along the longitudinal axis of the filter element and exhibiting a first pressure drop and a second region extending along the longitudinal axis of the filter element and exhibiting a second pressure drop lower than said first pressure drop, wherein the first and second regions are arranged in a side-by-side configuration such that both regions are visible in a cross-section of the filter element perpendicular to the longitudinal axis, and wherein mainstream smoke can move from the second region into the first region, and further comprising a smoke-altering material, such as an oxidation catalyst, positioned in the first region.
    Type: Grant
    Filed: November 11, 2009
    Date of Patent: April 7, 2015
    Assignee: R.J. Reynolds Tobacco Company
    Inventors: Alan Benson Norman, Bradley James Ingebrethsen
  • Patent number: 8955524
    Abstract: A system (100) and method for managing communication session is provided. The system includes a mobile node (104) that is communicably coupled to a first communication network (102). Further, the system includes a first proxy-relay (108). The first proxy-relay is communicably coupled to the first communication network and performs one or more functions on behalf of the mobile node. The system also includes a first policy-profile repository (106) that is communicably coupled to the first communication network. The first policy-profile repository stores a first set of policy-profile definitions describing a first set of services in the first communication network that the mobile node is allowed to access and a first set of rules describing discovery preferences for the mobile mode.
    Type: Grant
    Filed: July 25, 2008
    Date of Patent: February 17, 2015
    Assignee: British American Tobacco (Investments) Limited
    Inventor: Peter Rex White
  • Publication number: 20140137881
    Abstract: A filter for a smoking article comprises a monolith. The monolith is produced forming particles of a partially cured resin into a dough, shaping the dough to produce a monolith, sintering the particles, carbonizing and activating the sintered monolith, and incorporating the monolith into a smoking article filter.
    Type: Application
    Filed: June 1, 2012
    Publication date: May 22, 2014
    Applicant: BRITISH AMERICAN TOBACCO (INVESTMENTS) LIMITED
    Inventors: Peter Branton, Martin Duke, Stephen Tennison, Dinah Winter
  • Patent number: 8616218
    Abstract: A tobacco filter which can easily produce a hand-rolled cigarette, can suppress excessive heat conduction to a smoker's lips, and can suppress spoiling of tobacco taste during smoking is provided. A tobacco filter for producing a hand-rolled cigarette by wrapping at least a portion thereof together with a smoking plant with a wrapping paper has an outer surface on which grooves are formed and a smoke channel. The tobacco filter is made of an incombustible material. A surface area of an outer surface of the tobacco filter is increased due to the formation of the grooves so that the tobacco filter can be efficiently cooled and the excessive heat conduction to a smoker's lips can be suppressed. In wrapping the tobacco filter with the wrapping paper, inward folding lines are formed on the wrapping paper by corner portions of the tobacco filter.
    Type: Grant
    Filed: July 1, 2008
    Date of Patent: December 31, 2013
    Inventor: Kazuto Koshiishi
  • Publication number: 20130298923
    Abstract: A system for producing porous masses may include a mold cavity disposed along the material path, at least one hopper before at least a portion of the mold cavity for feeding a matrix material to the material path, a heat source in thermal communication with at least a first portion of the material path, and a cutter disposed along the material path after the first portion of the material path.
    Type: Application
    Filed: October 14, 2011
    Publication date: November 14, 2013
    Applicant: CELANESE ACETATE LLC
    Inventors: Thomas S. Garrett, Zeming Gou, Lawton E. Kizer, Raymond M. Robertson
  • Patent number: 8573230
    Abstract: A smoking article having a cylindrical tube of smokable material having an outer wrapper, a concentric rod of smokable material coaxially positioned within the cylindrical tube of a smokable material, and an inner wrapper separating the cylindrical tube and the concentric rod. A filter attaches to the tobacco rod with an annular film positioned between the filter and the tobacco rod. The annular film increases the resistance-to-draw of the cylindrical tube during smoking.
    Type: Grant
    Filed: December 11, 2006
    Date of Patent: November 5, 2013
    Assignee: Philip Morris USA Inc.
    Inventors: Shuzhong Zhuang, Georgios D. Karles, Raquel M. Olegario
  • Patent number: 8499767
    Abstract: A smoking article comprises a rod of smokable material circumscribed by a rod wrapper and a filter comprising at least one filter segment circumscribed by a filter wrapper. The rod of smokable material and the filter are attached to one another by tipping paper and the smoking article comprises a tear ribbon between the at least one filter segment and the tipping paper. The tear ribbon is affixed to at least one of the tipping paper and the filter wrapper.
    Type: Grant
    Filed: June 12, 2008
    Date of Patent: August 6, 2013
    Assignee: Philip Morris USA Inc.
    Inventors: Nikolaus Martin Ricketts, Dionis Borgognon, Charles Kuersteiner
  • Patent number: 8434499
    Abstract: A filter for a smoking article, which includes an upstream segment having a carbon filter and a downstream segment of filtering material. The upstream segment includes a carbon filter with a hollow tubular member concentrically positioned within the carbon filter, and one or more holes around an outer circumference of the hollow tubular member to allow mainstream smoke to bypass the carbon filter during the first puff. During use, the hollow tubular member has a lower resistance to draw than the carbon filter during an initial puff or puffs, and after the initial puff or puffs, mainstream smoke is drawn through the carbon filter.
    Type: Grant
    Filed: January 18, 2011
    Date of Patent: May 7, 2013
    Assignee: Philip Morris USA Inc.
    Inventors: Georgios Karles, Christopher Allmond, Stephen Wayne Rose
  • Patent number: 8424539
    Abstract: A smoking article having a filter segment that establishes both a desired resistance to draw and a mixing of mainstream smoke with ventilation air. The filter segment includes a fluted portion, a frusto-conical portion and axially extending orifices establishing fluid communication between the frusto-conical portion and voids between one or more walls of the fluted portion.
    Type: Grant
    Filed: August 7, 2007
    Date of Patent: April 23, 2013
    Assignee: Philip Morris USA Inc.
    Inventors: Michael Braunshteyn, San Li, Raquel Olegario
  • Patent number: 8424540
    Abstract: A smoking article filter includes a valved 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. The valved restrictor can be used to isolate a sorbent bearing component of the filter from a flavor bearing component.
    Type: Grant
    Filed: October 9, 2009
    Date of Patent: April 23, 2013
    Assignee: Philip Morris USA Inc.
    Inventors: Raquel Olegario, San Li, Roland W. Dwyer, Mike Braunshteyn
  • Patent number: 8353302
    Abstract: Provided is a smoking article including a smokeable filler with a high aerosol former content and a filter. Preferably, the smokeable filler includes about 4 wt % glycerin to about 35 wt % glycerin. The filter includes a cylindrical tube attached to the tobacco rod with tipping paper, a first filter segment at a location along said cylindrical tube adjacent and in a downstream relation to said tobacco rod, and a flow restricting filter segment at a location adjacent and in a downstream relation to the first filter segment. In an embodiment, the filter also includes a cavity adjacent and in a downstream relation to the flow restricting filter segment, and a ventilation zone at a location along the cavity including perforations that extend through the tipping paper and the cylindrical tube. Preferably, the ventilation zone is in a downstream relation to the flow restricting filter segment.
    Type: Grant
    Filed: March 7, 2008
    Date of Patent: January 15, 2013
    Assignee: Philip Morris USA Inc.
    Inventors: Raquel Olegario, San Li
  • Patent number: 8235057
    Abstract: A smoking article includes a tobacco rod adapted to produce mainstream smoke, and a filter having an upstream end and a downstream end, wherein the filter is arranged to receive mainstream smoke at the upstream end. The filter includes a tubular segment open at the downstream end thereof and a flow restrictor contained within the tubular segment. The filter is attached to the tobacco rod with tipping paper and includes an air-admissible ventilating zone at a location between the upstream end and the downstream end of the filter.
    Type: Grant
    Filed: March 7, 2008
    Date of Patent: August 7, 2012
    Assignee: Philip Morris USA Inc.
    Inventors: San Li, Michael S. Braunshteyn, Raquel M. Olegario, Richard Jupe, Martin Garthaffner
  • Patent number: 8201564
    Abstract: Fibrous material suitable for incorporation into filter elements of smoking articles such as cigarettes are impregnated with additives and agents such as flavorants, flavorant-enhancers and/or free radical scavengers. The fibrous material is contacted with the additive dispersed in a high pressure gas or supercritical fluid (SCF) held at elevated pressures. The high pressure gas or SCF swells the fibrous matrix and enables the additive to be incorporated within the matrix. When pressure is reduced, the gas or SCF vaporizes and leaves the additive embedded in the fiber interstices. As a result, the additive is slowly released over a finite period of time. When incorporated into a cigarette filter, the additive is released at a desired rate from the interior of the fibrous filter into the cigarette smoke.
    Type: Grant
    Filed: December 4, 2006
    Date of Patent: June 19, 2012
    Assignee: Philip Morris USA Inc.
    Inventors: Mark A. McHugh, Georgios Karles, Diane Gee, Joseph L. Banyasz, Zhihao Shen, Munmaya K. Mishra
  • Patent number: 8109277
    Abstract: 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.
    Type: Grant
    Filed: March 6, 2008
    Date of Patent: February 7, 2012
    Assignee: Philip Morris USA Inc,
    Inventors: San Li, Richard Jupe, Georgios D. Karles, Dwight Williams, Raquel Olegario, Michael Braunshteyn, Martin Garthaffner, Rowland W. Dwyer
  • Patent number: 8100134
    Abstract: A cigarette includes a rod comprising a wrapped tobacco column that is joined to an axially aligned filter by a band of air impermeable tipping paper. The filter end of the rod is inserted into a mouthpiece having an air impermeable outer surface that comprises a ventilation tube and a second filter, separated by a mixing chamber. The ventilation tube has an air permeable annular wall that defines a central axial passage through which the rod extends. In use, the end surface of the annular wall at the rod end of the ventilation tube, which extends radially outward around the rod, acts as a ventilation surface through which air is drawn into the mixing chamber, where it mixes with mainstream smoke from the burning tobacco rod. The air/smoke mixture is drawn through the second filter into the consumer's mouth.
    Type: Grant
    Filed: February 22, 2007
    Date of Patent: January 24, 2012
    Assignee: Philip Morris USA Inc.
    Inventors: Cédric Meyer, Antoun Frédéric, Charles Kuersteiner
  • Publication number: 20110232661
    Abstract: A smoking article (1) in which a patch of web material (7) such as paper containing an adsorbent material therein, such as activated carbon, is positioned towards the mouth end of the smoking article (1) to achieve a flatter puff profile compared to a conventional cigarette by decreasing the smoke constituents in the final few puffs. Characteristics of the smoking articles may be changed to increase the delivery of smoke constituents in the first few puffs in order to maintain a constant ISO NFDPM yield. The adsorbent-containing paper extends over only a portion of the smoking article towards the mouth end and does not comprise a flavourant therein.
    Type: Application
    Filed: June 3, 2011
    Publication date: September 29, 2011
    Inventor: Richard Thomas Fiebelkorn
  • Patent number: 7987856
    Abstract: 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 with respect to the first filter portion and having a lower resistance to draw than the first filter portion during an initial puff on the smoking article. The second filter portion closes upon contact with the mainstream smoke of the initial puff, such that after the initial puff, the first filter portion has the lower resistance to draw.
    Type: Grant
    Filed: December 22, 2006
    Date of Patent: August 2, 2011
    Assignee: Philip Morris USA Inc.
    Inventors: Shalva Gedevanishvili, Mohammad R. Hajaligol
  • Patent number: 7980250
    Abstract: A tobacco smoke filter which has a tar retention of at most 50% and comprises a relatively high draw resistance downstream filtering plug of at most 50% tar retention, a relatively low draw resistance upstream filter plug of at most 22% tar retention spaced longitudinally upstream therefrom, and a filter wrapper engaging around and joining the spaced plugs to define a cavity therebetween.
    Type: Grant
    Filed: October 13, 2003
    Date of Patent: July 19, 2011
    Assignee: Filtrona International Limited
    Inventor: Paul Francis Clarke
  • Patent number: 7975704
    Abstract: 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 decreasing the smoke constituents in the final few puffs. Characteristics of the smoking articles may be changed to increase the delivery of smoke constituents in the first few puffs in order to maintain a constant ISO NFDPM yield. The adsorbent-containing paper extends over only a portion of the smoking article towards the mouth end and does not comprise a flavorant therein.
    Type: Grant
    Filed: July 19, 2006
    Date of Patent: July 12, 2011
    Assignee: British American Tobacco (Investments) Limited
    Inventor: Richard Thomas Fiebelkorn
  • Patent number: 7878963
    Abstract: 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.
    Type: Grant
    Filed: March 28, 2007
    Date of Patent: February 1, 2011
    Assignee: Philip Morris USA Inc.
    Inventors: San Li, Raquel Olegario, Mike Braunshteyn, Rowland W. Dwyer, Martin Garthaffner, Dwight Williams, Richard Jupe
  • Patent number: 7874296
    Abstract: 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 a high permeability wrapper paper. As the cigarette smoke is passed through this annulus gap, the fraction of gases present in the smoke is reduced by diffusion mechanism and due to inflow of air into the annulus by convection mechanism. Since the diffusion coefficient of aerosol particles are several orders of magnitude smaller than the gas molecules, the aerosol particles are kept mainly intact while passing through the annulus. Therefore this filter is applied for reducing the gas/tar ratio. This filter can also be used to filter the gases of non-cigarette smokes.
    Type: Grant
    Filed: July 25, 2007
    Date of Patent: January 25, 2011
    Inventor: Mohammad Said Saidi
  • Publication number: 20100294288
    Abstract: A filter for a cigarette comprises a porous filter rod (3) a material sheet (2) wrapped around the filter rod and a cellulose acetate thread (4) formed from substantially uncrimped cellulose acetate filaments. The cellulose acetate thread is positioned within the filter rod and extends along the central axis of the filter rod.
    Type: Application
    Filed: June 27, 2008
    Publication date: November 25, 2010
    Inventors: John Roger Sampson, David Lewis
  • Patent number: 7767134
    Abstract: Disclosed is a method for forming an article with template shaped channels by (a) mixing a precursor with a fibrous template, (b) forming the mixture into a pre-determined shape, (c) curing the mixture to form a precursor composite, (d) carbonizing the precursor composite, and (e) decomposing the fibrous template to yield a shaped carbon article with template shaped channels.
    Type: Grant
    Filed: June 29, 2005
    Date of Patent: August 3, 2010
    Assignee: Philip Morris USA Inc.
    Inventors: Lixin Luke Xue, Shuzhong Zhuang, Liqun Yu, John B. Paine, III
  • Patent number: 7762267
    Abstract: 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 cigarettes by filter components. According to the invention, a filter element is manufactured of starch and/or a mixture of a starch-based polymer and eventually incorporated activated-carbon layers and provided with pores and/or channels. The filter particles eventually adherent to such filtering materials or released during cigarette smoking can be dissolved in a corresponding moisture-containing environment. They do not come into consideration for health-damaging effects.
    Type: Grant
    Filed: October 16, 2003
    Date of Patent: July 27, 2010
    Assignee: Biotec Biologische Naturverpackungen GmbH & Co. KG
    Inventor: Harald Schmidt
  • Patent number: 7757698
    Abstract: 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 ends of the cylindrical plug. The inhaler device may be used to ease nasal congestion and quell cough.
    Type: Grant
    Filed: December 22, 2006
    Date of Patent: July 20, 2010
    Assignee: Philip Morris USA Inc.
    Inventor: Bhanu Murthy Evani
  • Publication number: 20100147317
    Abstract: A tobacco smoke filter (10) can comprise a spiral core (11) of impermeable or semi-permeable material. A filter spiral core (11) is surrounded by filter material (12) such as cellulose acetate and wrapped in paper (13).
    Type: Application
    Filed: November 22, 2007
    Publication date: June 17, 2010
    Inventor: Gary Fallon
  • Publication number: 20100108085
    Abstract: A filter for a smoking article comprising first and second sections, the first section being at the mouth end of the filter and comprising a cylindrical element circumscribed by a wrapper and having a hollow portion extending therethrough, and the second section being longitudinally aligned with and adjacent to the first section and comprising a filtration material. The second section comprises a particulate material in a circumferential region and extending to the end of the second section immediately adjacent the first section. Also provided is a smoking article incorporating a filter according to the invention.
    Type: Application
    Filed: November 20, 2007
    Publication date: May 6, 2010
    Inventor: Martin Graham Duke
  • Publication number: 20090288671
    Abstract: A filter element having a longitudinally extending core and a wrapper (8) engaged around the core, wherein the core comprise filtration material (6) and optionally a particulate material (7) interspersed in the filtration material, and the wrapper (8) comprises a particulate material (9) adhered to two or more portions of said wrapper (8) wherein at least one of said two or more portions extends over the full longitudinal length of said wrapper. Also taught herein is a smoking article comprising said filter element and/or filter comprising said filter element.
    Type: Application
    Filed: January 23, 2007
    Publication date: November 26, 2009
    Applicant: BRITISH AMERICAN TOBACCO (INVESTMENTS) LIMITED
    Inventors: Peter Rex White, Martin Graham Duke, William David Lewis
  • Publication number: 20090272392
    Abstract: [PROBLEMS] To provide a cigarette filter that does not impair the distinctive flavor of a cigarette and the air permeability of filter while smoking, and at the same time, can more effectively remove harmful substances such as a pyrene that is generated from the cigarette. [MEANS FOR SOLVING PROBLEMS] The cigarette filter comprising a filter fiber bundle body which cigarette smoke passes through; a fine powder with a high surface area ratio that are mixed and scattered in the filter fiber bundle body; and a double-stranded DNA molecule attached to the outer surface of the fine powder with a high surface area ratio, characterized in that harmful substances such as benzo[a]pyrene contained in the cigarette smoke can be removed by intercalation into the double-stranded DNA molecule.
    Type: Application
    Filed: April 28, 2005
    Publication date: November 5, 2009
    Applicants: NISSEI BIO CO., LTD., NATIONAL UNIVERSITY CORPORATION hOKKAIDO UNIVERSITY
    Inventors: Xiang Dong Liu, Masaji Matsunaga, Norio Nishi
  • Patent number: 7552735
    Abstract: 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 materials such as granules, beads or course powders may be dispersed amongst the activated carbon fibers to aid in removal of the gas phase constituents. Additionally, the activated carbon fiber filter section may be used in combination with a separate bed or beds of particulate adsorbent material. In one embodiment, the activated carbon fibers are positioned within a helical groove on the outside of a threaded rod within the activated carbon fiber filter section. Relatively smaller amounts of activated carbon fibers produce the same smoke constituent reduction as larger amounts of particulate adsorbent material.
    Type: Grant
    Filed: April 11, 2003
    Date of Patent: June 30, 2009
    Assignee: Philip Morris USA Inc.
    Inventors: Lixin Xue, Jose G. Nepomuceno, Shuzhong Zhuang, Timothy Scott Sherwood, John Bryant Paine, III, Jay A Fournier, Charles Edwin Thomas, Jr., Kent Brian Koller, Liqun Yu
  • Publication number: 20090084392
    Abstract: 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 decreasing the smoke constituents in the final few puffs. Characteristics of the smoking articles may be changed to increase the delivery of smoke constituents in the first few puffs in order to maintain a constant ISO NFDPM yield. The adsorbent-containing paper extends over only a portion of the smoking article towards the mouth end and does not comprise a flavourant therein.
    Type: Application
    Filed: July 19, 2006
    Publication date: April 2, 2009
    Inventor: Richard Thomas Fiebelkorn
  • Publication number: 20090056729
    Abstract: Improved filters useful for tobacco products, such as cigarettes, and novel cigarettes having such filters are disclosed. The filters include adsorbents such as activated carbon which reduce amounts of one or more gas phase constituents of mainstream tobacco smoke. The adsorbents are treated with off-taste suppressants which reduce the off-taste associated with adsorbent containing filters and substantially restore the taste normally associated with tobacco smoke.
    Type: Application
    Filed: November 3, 2008
    Publication date: March 5, 2009
    Inventors: Michael A. ZAWADZKI, A. Brent Rudd, Kenneth D. Barrett, Terry D. Jessup, William R. Deaton
  • Publication number: 20090050168
    Abstract: Cigarette filter with an outer housing, an inner smoke channel member, the outer housing being approximately cylindrical in shape, the outer housing having an aperture on its first end that is equivalent to the diameter of a standard cigarette, the outer housing having an aperture on the second end that is approximately one tenth of an inch in diameter, the second end also being flattened so that the end view of the second end is approximately rectangular, the interior of the outer housing capable of frictionally retaining the inner smoke channel member, the inner smoke channel member including a quarter of an inch diameter disk that is frictionally retained by the inner diameter of the outer housing, the disk including six evenly spaced radially placed apertures, the smoke channel member disk apertures being approximately three thousandths of an inch in diameter.
    Type: Application
    Filed: August 22, 2007
    Publication date: February 26, 2009
    Inventor: Eugene J. Higgins
  • Publication number: 20080216851
    Abstract: Provided is a smoking article including a smokeable filler with a high aerosol former content and a filter. Preferably, the smokeable filler includes about 4 wt % glycerin to about 35 wt % glycerin. The filter includes a cylindrical tube attached to the tobacco rod with tipping paper, a first filter segment at a location along said cylindrical tube adjacent and in a downstream relation to said tobacco rod, and a flow restricting filter segment at a location adjacent and in a downstream relation to the first filter segment. In an embodiment, the filter also includes a cavity adjacent and in a downstream relation to the flow restricting filter segment, and a ventilation zone at a location along the cavity including perforations that extend through the tipping paper and the cylindrical tube. Preferably, the ventilation zone is in a downstream relation to the flow restricting filter segment.
    Type: Application
    Filed: March 7, 2008
    Publication date: September 11, 2008
    Applicant: Philip Morris USA Inc.
    Inventors: Raquel Olegario, San Li
  • Publication number: 20080216853
    Abstract: A smoking article includes a tobacco rod adapted to produce mainstream smoke, and a filter having an upstream end and a downstream end, wherein the filter is arranged to receive mainstream smoke at the upstream end. The filter includes a tubular segment open at the downstream end thereof and a flow restrictor contained within the tubular segment. The filter is attached to the tobacco rod with tipping paper and includes an air-admissible ventilating zone at a location between the upstream end and the downstream end of the filter.
    Type: Application
    Filed: March 7, 2008
    Publication date: September 11, 2008
    Applicant: Philip Morris USA Inc.
    Inventors: San Li, Michael S. Braunshteyn, Raquel M. Olegario, Richard Jupe, Martin Garthaffner
  • Publication number: 20080035163
    Abstract: The current invention is a magnetic Cigarette Filter and system of use. It is a filter which has a filter mouth piece with a cellulose filter, an air tube and a cigarette holder with an air hole in a magnetic plate to which magnets are held. The mouth piece and the cigarette holder can be removed from the air tube by a simple turning and pulling motion. There are rings in the connection between the mouth piece and the air tube and the air tube and the cigarette holder. These rings issue an airtight seal on the filter.
    Type: Application
    Filed: August 10, 2006
    Publication date: February 14, 2008
    Inventor: Shaahin Cheyene
  • Patent number: 7163015
    Abstract: 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 abutting along a seam parallel to the central axis of the cigarette and cigarette paper wrapped around the tobacco mat layer and bonded to itself along an overlapped seam that is offset from the seam of the tobacco mat layer. The method of manufacturing the cigarette includes wrapping the tobacco mat layer and the cigarette paper around the tobacco rod portion and the filter tube portion on a single, high-speed machine.
    Type: Grant
    Filed: January 30, 2003
    Date of Patent: January 16, 2007
    Assignee: Philip Morris USA Inc.
    Inventor: Robert H. Moffitt
  • Patent number: 7080649
    Abstract: 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 first chamber, a second chamber, an inner click portion, an inner tank, a center hole, and an insertion end inserted in the enlarged hole of the mouthpiece. The cotton filter is inserted in the second chamber of the main pipe. The filter column has an end flange, a recess hole, a vent hole communicating with the recess hole, an annular flange, and a distal pillar. The filter column is inserted in a middle portion of the main pipe.
    Type: Grant
    Filed: May 8, 2003
    Date of Patent: July 25, 2006
    Inventor: Hui-Ju Hcu
  • Patent number: 6848450
    Abstract: 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 transition metal. The transition metal can be incorporated in an intermetallic compound such as titanium aluminide or iron aluminide. The metal clusters can be incorporated in or on a support material such as silica gel, porous carbon or a zeolite. The metal reagent can remove the gaseous component by selectively binding to unsaturated hydrocarbons such as 1,3-butadiene. The binding can occur by insertion of a metal atom of the metal reagent into a C—H bond or a C—C bond of the gaseous component.
    Type: Grant
    Filed: February 7, 2001
    Date of Patent: February 1, 2005
    Assignee: Philip Morris USA Inc.
    Inventors: A. Clifton Lilly, Jr., Kent B. Koller, John B. Paine, III, Purusottam Jena, Bijan K. Rao
  • Patent number: 6832613
    Abstract: 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.
    Type: Grant
    Filed: October 11, 2002
    Date of Patent: December 21, 2004
    Assignee: Trierenberg Holding Aktiengesellschaft
    Inventor: Ernst Brunbauer
  • Patent number: 6814786
    Abstract: 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 constituents from a gas flow. The filter can be incorporated in a smoking article, such as a cigarette, to remove one or more selected constituents from mainstream smoke. Methods for making the filter and smoking articles including the filter, as well as methods for smoking a cigarette comprising the filter, are also provided.
    Type: Grant
    Filed: April 2, 2003
    Date of Patent: November 9, 2004
    Assignee: Philip Morris USA Inc.
    Inventors: Shuzhong Zhuang, John B. Paine, III, Timothy S. Sherwood, Jay A Fournier, Kent B. Koller, Zhaohua Luan, Charles E. Thomas, Jr.
  • Patent number: 6718989
    Abstract: 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 axial passages 16 is formed between the core and the sheath and extend continuously between both end faces of the filter.
    Type: Grant
    Filed: July 24, 2000
    Date of Patent: April 13, 2004
    Assignees: Japan Tobacco Inc., Filtrona International Ltd.
    Inventors: Paul Clarke, John Charlton, Ichiro Atobe, Atsushi Tokida