Having A Polymer Patents (Class 131/332)
  • Patent number: 11337454
    Abstract: The invention relates to a smoking article (10) comprising a tobacco rod (12) and a filter, the filter comprising a filter unit (14) comprising a first segment (16) of filtration material; a second segment comprising a tubular element (18) of filtration material upstream of the first segment (16), the tubular element (18) having an outer diameter (D2) and an inner diameter (D1). An inner surface of the tubular element (18) is substantially air impermeable. The second segment further comprises a frangible or irreversibly collapsible flow restrictor (24) disposed in the tubular element (18). When the flow restrictor (24) is in a substantially unbroken or non-collapsed state, the filter unit (14) has a first RTD. When the flow restrictor (24) is broken or collapsed, the filter unit (14) has a second RTD, the second RTD being smaller than the first RTD.
    Type: Grant
    Filed: June 27, 2017
    Date of Patent: May 24, 2022
    Assignee: Philip Morris Products S.A.
    Inventors: Loi Mark C. Figueroa, Jerome Uthurry
  • Patent number: 11019843
    Abstract: There is provided an aerosol-generating article (10) comprising an aerosol-generating substrate (12) and a mouthpiece (14). The mouthpiece (14) comprises at least one segment of filter material (18, 20, 22), a breakable capsule (26) containing an aqueous liquid (32), and a plurality of microencapsulated flavourant particles (38) dispersed within the at least one segment of filter material (22). Each of the microencapsulated flavourant particles (38) comprises a flavourant encapsulated within a shell comprising a water sensitive material, such that the plurality of microencapsulated flavourant particles (38) are adapted to release a flavourant upon contact with the liquid (32) contained within the breakable capsule (26).
    Type: Grant
    Filed: September 29, 2016
    Date of Patent: June 1, 2021
    Assignee: Philip Morris Products S.A.
    Inventor: Jerome Uthurry
  • Patent number: 11013264
    Abstract: An apparatus and method for delivering an aerosol-forming composition and a separate functional composition for generating a functionalized aerosol vapor which emulates the organoleptic characteristics and properties of mainstream smoke experienced by smoking traditional tobacco-based smoking articles. The apparatus can comprise a battery section comprising a first housing, a battery disposed within the first housing, and a first connector coupled to the housing, an aerosol section comprising a second housing, an aerosol forming chamber disposed within the second housing, and a pod bay, and an insert section comprising a third housing, a connector, an annular separator, and a mouth end. The battery section can be configured to couple to the aerosol section, the aerosol section can be configured to couple to the insert section, and the connector can be configured to fit within the pod bay.
    Type: Grant
    Filed: November 19, 2015
    Date of Patent: May 25, 2021
    Assignee: Fontem Holdings 4 B.V.
    Inventors: Luis A. Sanchez, Steven E. Brown, Kai Tang
  • Patent number: 10986863
    Abstract: A method and associated system are provided for forming a biodegradable filter material for a filter element of a smoking article, wherein the method involves combining cellulose acetate fibers with regenerated cellulose fibers, drawing the combined cellulose acetate fibers and regenerated cellulose fibers to form drawn combined fibers, and crimping the drawn combined fibers to form a mixed fiber tow. An associated filter material for the filter element of a smoking article is also provided.
    Type: Grant
    Filed: August 7, 2015
    Date of Patent: April 27, 2021
    Assignee: R.J. Reynolds Tobacco Company
    Inventors: Andries Don Sebastian, Evon L. Crooks, Cortney R. Jackson
  • Patent number: 10897928
    Abstract: A mouthpiece for a smoking device is provided. The mouthpiece comprises a porous substrate. The porous surface comprises a wall having an outer surface having an outer cross-sectional shape and an inner surface having an inner cross-sectional shape. The inner surface defines a hollow interior space. A wall thickness is defined by the outer and inner surfaces. The porous substrate has a specific hardness of at least about 1.5 hardness % per weight (g) per length (mm) of the porous substrate. The porous substrate has a porosity of about 50% to about 70%. The inner and outer surfaces provide a wall thickness of about 20% to 60% of an area defined by the outer cross-sectional shape.
    Type: Grant
    Filed: June 29, 2016
    Date of Patent: January 26, 2021
    Assignee: Essentra Filter Products Development Co Pte. Ltd.
    Inventors: Qiang Zhou, David B. Harris, Thomas E. Harris, Tom Beaudet
  • Patent number: 10893701
    Abstract: A cellulose acetate particle aggregate, a preparation method therefor and an application thereof, which relate to the field of harm reduction additives in cigarettes. The cellulose acetate particle aggregate includes 49-99.5 wt % of cellulose acetate particles, 0-50 wt % of a second kind of particles, and 0.5-20 wt % of a binder. The preparation method involves selecting cellulose acetate particles and a second kind of particles in a certain ratio, or cellulose acetate particles alone, preparing particle aggregates by using an air fluidized granulation method while adding a binder thereto, and sieving the particle aggregates to obtain a cellulose acetate particle aggregate having a required particle size. The cellulose acetate particle aggregate has a porous structure, an irregular shape, and a rough and uneven surface, which help to improve the efficiency of filtering out particulate matters or one or more harmful ingredients in cigarette smoke.
    Type: Grant
    Filed: July 18, 2017
    Date of Patent: January 19, 2021
    Assignee: NANTONG CELLULOSE FIBERS CO., LTD.
    Inventors: Jianguo Cao, Weijun Peng, Xiaomei Song, Jianfeng Xia
  • Patent number: 10864484
    Abstract: The present invention relates to a micro-porous filtration membrane with performance enhancing projections as well as a method for producing the same.
    Type: Grant
    Filed: July 15, 2015
    Date of Patent: December 15, 2020
    Assignee: Sartorius Stedim Biotech GmbH
    Inventors: Ashok Mundrigi, Jahnavi Gowda, Ramesh Mundlamuri, Thomas Loewe, Holger Linne, Sebastian Handt
  • Patent number: 10834961
    Abstract: There is provided a smoking article comprising a tobacco rod, a filter and tipping material attaching the tobacco rod and the filter. The filter comprises a plug of filtration material that defines a downstream end segment of the smoking article, the plug being surrounded by one or more filter wrappers. The hardness of the smoking article at the downstream end segment is at least about 90%, and the filtration material extends to the furthest downstream end of the filter.
    Type: Grant
    Filed: February 13, 2014
    Date of Patent: November 17, 2020
    Assignee: Philip Morris Products S.A.
    Inventors: Charles Kuersteiner, Alen Kadiric, Martha Martha, Nicolas Cusnir
  • Patent number: 10681883
    Abstract: Compositions and methods for reducing the level of nornicotine and N?-nitrosonornicotine (NNN) in tobacco plants and plant parts thereof are provided. The compositions comprise isolated polynucleotides and polypeptides for a root-specific nicotine demethylases, CYP82E10, and variants thereof, that are involved in the metabolic conversion of nicotine to nornicotine in these plants. Compositions of the invention also include tobacco plants, or plant parts thereof, comprising a mutation in a gene encoding a CYP82E10 nicotine demethylase, wherein the mutation results in reduced expression or function of the CYP82E10 nicotine demethylase. Seed of these tobacco plants, or progeny thereof, and tobacco products prepared from the tobacco plants of the invention, or from plant parts or progeny thereof, are also provided. Methods for reducing the level of nornicotine, or reducing the rate of conversion of nicotine to nornicotine, in a tobacco plant, or plant part thereof are also provided.
    Type: Grant
    Filed: June 29, 2017
    Date of Patent: June 16, 2020
    Assignee: North Carolina State University
    Inventors: Ralph E. Dewey, Ramsey S. Lewis
  • Patent number: 10624386
    Abstract: Pellet substrates configured for use with a vapor delivery device to vaporize and deliver an aerosol to a user include a semi-porous base material formed of activated alumina pellets, activated carbon pellets, hulled millet grains that have a generally rounded shape or cellulose paper that has a generally disc shape. The pellet substrates are formed by mixing the base material with a liquid solution of an aerosol former and at least one of a tobacco extract mixture and a tobacco powder blend until the liquid solution is absorbed onto the exposed surfaces of the base material with or without drying by applying heat. The base material may be coated with a liquid hydrocolloid gum solution, namely a water soluble gum, such as sodium carboxymethyl cellulose, and distilled water to reduce fracturing, cracking, chipping and dusting of the pellet substrates.
    Type: Grant
    Filed: May 20, 2019
    Date of Patent: April 21, 2020
    Inventor: Jackie L. White
  • Patent number: 10517325
    Abstract: This invention relates to a lyocell material for a cigarette filter and a method of manufacturing the same, wherein the lyocell material which is biodegradable and eco-friendly can be manufactured by crimping lyocell multifilaments to thus obtain a crimped tow.
    Type: Grant
    Filed: June 2, 2014
    Date of Patent: December 31, 2019
    Assignees: KOLON INDUSTRIES, INC., KT&G CORPORATION
    Inventors: Jong Cheol Jeong, Woo Chul Kim, Sang Woo Jin, Burm Ho Yang, Man Seok Seo, Kyung Joon Lee, Hyun Suk Cho, Jong Yeol Kim
  • Patent number: 10464043
    Abstract: A sorbent product, including from about 1 wt % to about 99 wt %, based on the total weight of the sorbent product, of at least one base sorbent material; and from about 1 wt % to about 99 wt %, based on the total weight of the sorbent product, of at least one binder. The sorbent product may further include at least from about 0 wt % to about 99% wt %, based on the total weight of the sorbent product, of at least one additional additive. Methods for making same and methods and systems for controlling multiple pollutants are also included.
    Type: Grant
    Filed: July 7, 2015
    Date of Patent: November 5, 2019
    Assignee: CARBONXT, INC.
    Inventors: David W. Mazyck, Heather McKenna, Regina Rodriguez, Christine Valcarce
  • Patent number: 10368576
    Abstract: There is provided a composition for inclusion in a smoking article comprising an ion exchange resin and additive particles comprising an additive on the surface of the ion exchange resin. There is also provided a smoking article filter element comprising this composition, a smoking article comprising this smoking article filter element or this composition. A method of preparing a composition comprising an ion exchange resin and additive particles comprising an additive is also provided, the method comprising the deposition of additive particles onto the ion exchange resin from the solid and/or liquid phase of an aerosol.
    Type: Grant
    Filed: March 27, 2015
    Date of Patent: August 6, 2019
    Assignee: BRITISH AMERICAN TOBACCO (INVESTMENTS) LIMITED
    Inventor: Peter Branton
  • Patent number: 10327469
    Abstract: A smoking article comprises a tobacco rod and a filter component. The filter component comprises a first filter segment of filtration material having a diameter measured perpendicular to a longitudinal direction of the filter, and a flow restrictor embedded in the filter segment. At least one cross sectional dimension of the flow restrictor, measured in a transverse direction of the filter segment, is at least about 50 percent of the diameter of the filter segment. The flow restrictor is made from an air-impermeable, non-compressible and water-soluble or water-dissolvable material. Further, the flow restrictor comprises a composition that promotes degradation of the filtration material.
    Type: Grant
    Filed: December 1, 2015
    Date of Patent: June 25, 2019
    Assignee: Philip Morris Products S.A.
    Inventors: Stefanos Papakyrillou, Leonardo Nappi
  • Patent number: 10292421
    Abstract: A filter for a smoking article includes a filter component formed from a solution of cellulose acetate and a degradable polymer in aceton, the degradable polymer being soluble in acetone and degrading in the presence of water. In a first aspect of the invention, the filter component is a filter segment (16) formed of a plurality of fibers formed from the degradable solution. In a second aspect of the invention, the filter component is a wrapper (39) circumscribing at least a segment of the filter.
    Type: Grant
    Filed: December 22, 2014
    Date of Patent: May 21, 2019
    Assignee: Philip Morris Products S.A.
    Inventor: Leonardo Nappi
  • Patent number: 10285435
    Abstract: A filter rod for a cigarette or other smoking article comprising a filter plug having a plurality of threads extending through at least part of the filter plug, and an apparatus and method for manufacturing such a filter rod.
    Type: Grant
    Filed: November 21, 2014
    Date of Patent: May 14, 2019
    Assignee: BRITISH AMERICAN TOBACCO (INVESTMENTS) LIMITED
    Inventors: Andy Davis, William David Lewis, Edward Atwy, Paulo Oliveira
  • Patent number: 10226070
    Abstract: A filter rod comprises a core of cellulose acetate fibers surrounded by a lofty porous network of charge retaining polymer fibers. The charge retaining fibers can be charged to attract and hold particles from such sources as particulate matter from sorbents (preventing break-through), and smoke constituents while having a suitable pressure drop.
    Type: Grant
    Filed: September 14, 2017
    Date of Patent: March 12, 2019
    Assignee: Philip Morris USA Inc.
    Inventors: Szu-Sung Yang, Lixin L. Xue, Jing C. Chang
  • Patent number: 10212969
    Abstract: A method for making electronic cigarette cartridges. The method includes a step of making the cartridges along a dedicated production line. The step of making the cartridges includes a step of making a casing by assembling one or more components along a first stretch of the production line and a step of making an electric module by assembling one or more electronic elements along a second stretch of the production line. The steps of making the casing and the electric module are steps which are synchronized and independent relative to one another. Once the steps of making the casing and the electric module are complete, the method includes a step of assembling the casing with a respective electric module to obtain the finished cartridge along a shared third stretch of the production line.
    Type: Grant
    Filed: March 12, 2015
    Date of Patent: February 26, 2019
    Assignee: G.D S.p.A.
    Inventors: Michael Andre Lemay, Mark Roland Godon, Stefano Negrini
  • Patent number: 9848636
    Abstract: A filter for a smoking article comprises a mouth end filter segment and a rod end filter segment. The rod end filter segment has a passage extending longitudinally therethrough. The passage has a diameter of about 1.0 mm or greater. In one embodiment, the rod end filter segment is comprised of an infinite pressure drop material. In another embodiment, the rod end filter segment is comprised of a low pressure drop material having a hollow tubular element disposed within to define the passage with an inner diameter greater than about 1.55 mm. Air dilution means are disposed in one of said filter segments to admit ventilating air into the filter.
    Type: Grant
    Filed: September 5, 2014
    Date of Patent: December 26, 2017
    Assignee: LORILLARD TOBACCO COMPANY
    Inventors: Steven E. Brown, Luis A. Sanchez, Kai Tang, Suzanne F. Roof
  • Patent number: 9491971
    Abstract: Filters and smoking articles include sodium bicarbonate-treated fibers and activated carbon capable of selectively removing one or more selected constituents from mainstream smoke. Methods for making cigarette filters and cigarettes using the sodium bicarbonate-treated fibers and activated carbon, and methods for treating mainstream smoke comprising the sodium bicarbonate-treated fibers and activated carbon are also provided.
    Type: Grant
    Filed: December 11, 2006
    Date of Patent: November 15, 2016
    Assignee: Philip Morris USA Inc.
    Inventors: Lixin Xue, Liqun Yu, Joel Schendel
  • Patent number: 9380809
    Abstract: A filter rod for a cigarette or other smoking article comprising a filter plug having a plurality of threads extending though at least part of the filter plug, and an apparatus and method for manufacturing such a filter rod.
    Type: Grant
    Filed: February 23, 2010
    Date of Patent: July 5, 2016
    Assignee: BRITISH AMERICAN TOBACCO (INVESTMENTS) LIMITED
    Inventors: Andy Davis, William David Lewis, Edward Awty, Paulo Oliveira
  • Patent number: 9289012
    Abstract: A filter material adapted for use as a filter element of a smoking article is provided, the filter material being in the form of a fibrous tow that includes a plurality of filaments of a degradable polyester and a plasticizer composition applied thereto, the plasticizer composition and the degradable polyester having a Relative Energy Difference calculated using Hansen Solubility Parameters of less than about 1.3. Exemplary degradable polyesters include polyglycolic acid, polylactic acid, polyhydroxyalkanoates, polycaprolactone, polybutylene succinate adipate and copolymers or blends thereof. Exemplary plasticizer compositions include one or more of dimethylisosorbide, propylene carbonate, methylbenzyl alcohol, glycerol carbonate acetate, glycerol carbonate ethyl ether, and mixtures thereof, optionally in combination with triacetin. Filter elements and smoking articles, such as cigarettes, that contain the filter material are also provided.
    Type: Grant
    Filed: January 28, 2014
    Date of Patent: March 22, 2016
    Assignee: R. J. Reynolds Tobacco Company
    Inventors: Andries Don Sebastian, Stephen Benson Sears, Thaddeus J. Jackson, Grady Lance Dooly
  • Patent number: 9226524
    Abstract: A process for preparing a filter plug for a smoking article, such as a cigarette, includes: (a) freeze-drying a solution of a biopolymer to form a structure; and (b) cutting the structure to a predetermined dimension, to thereby prepare a filter plug for a smoking article. Another process for preparing a filter plug for a smoking article, such as a cigarette, includes: (a) extruding a mixture of a foaming agent and a biopolymer comprising a protein to form a structure; and (b) cutting the structure to a predetermined dimension, to thereby form a filter plug for a smoking article.
    Type: Grant
    Filed: March 25, 2011
    Date of Patent: January 5, 2016
    Assignee: PHILIP MORRIS USA INC.
    Inventors: Munmaya K. Mishra, Shengsheng Liu, William R. Sweeney, Peter J. Lipowicz
  • Patent number: 9179709
    Abstract: Smoking articles including filter elements formed from two or more fibrous inputs with different physical properties are provided. The two or more fibrous inputs are provided in the form of staple fibers, which are at least partially entangled with each other to form a mixed fiber sliver. The mixed fiber sliver includes a first plurality of cellulose acetate staple fibers blended with a second plurality of staple fibers comprising a polymeric material different from the first plurality of staple fibers, such as staple fibers of a degradable polymeric material. The entangled fibers of the mixed fiber sliver may be sufficiently separated from one another such that blooming operations typically required in filter element production may not be necessary prior to incorporating the mixed fiber sliver into a filter element. Related methods, apparatuses and mixed fiber products are also provided by the disclosure.
    Type: Grant
    Filed: July 25, 2012
    Date of Patent: November 10, 2015
    Assignee: R. J. Reynolds Tobacco Company
    Inventor: Andries Don Sebastian
  • Patent number: 9119420
    Abstract: A filter element for use in a smoking article and providing filtration of particulate material and gaseous components of mainstream smoke is provided. The filter element includes a segment of fibrous tow comprising a plurality of individual filaments, wherein each individual filament includes a plurality of adsorbent material particles at least partially encapsulated with a removable encapsulant imbedded therein. The individual filaments may further include an outer coating that provides a plurality of reactive groups adapted for reaction with one or more components of mainstream smoke. Alternatively, the multifunctional filter element combines different fibrous filter materials, such as cellulose acetate or polyolefin filaments combined with activated carbon filaments and at least one of ion exchange filaments and catalytic filaments.
    Type: Grant
    Filed: April 1, 2014
    Date of Patent: September 1, 2015
    Assignee: R.J. Reynolds Tobacco Company
    Inventor: Andries Don Sebastian
  • Patent number: 9066542
    Abstract: A multi-section filter (5) for a smoking article comprises at least a first (5B) and a second filter section (5A). The first filter section (5B) is at a mouth end of the filter (5) and the second filter section includes a set of ventilation holes (17) and a set of grooves (7). The grooves (7) extend from respective ventilation holes (17) along the second filter section (5A) up to but not into the first filter section (5B).
    Type: Grant
    Filed: May 27, 2009
    Date of Patent: June 30, 2015
    Assignee: British American Tobacco (Investments) Limited
    Inventor: Richard Fiebelkorn
  • Patent number: 9027566
    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: Grant
    Filed: April 1, 2013
    Date of Patent: May 12, 2015
    Assignee: Celanese Acetate LLC
    Inventors: Thomas S. Garrett, Zeming Gou, Lawton E. Kizer, Raymond M. Robertson
  • Publication number: 20150114412
    Abstract: The invention relates to smoking articles (10) comprising a rod of smokeable material (11) and a filter (12) attached to one end of the rod, said filter comprising at least two sections and being wrapped in a porous plug wrap, wherein a first tipping wrapper (14) overlies the join between the rod of smokeable material and the filter, and at least one additional tipping wrapper (15) is provided around the filter, spaced from and separate to the first tipping wrapper such that a portion of the porous plug wrap is exposed between the first and at least one additional tipping wrapper, and wherein the tipping wrappers are normally less porous than the plug wrap. However if the tipping wrappers are more porous than the plug wraps, the split tipping will still retain its functionality.
    Type: Application
    Filed: April 24, 2013
    Publication date: April 30, 2015
    Applicant: BRITISH AMERICAN TOBACCO (INVESTMENTS) LIMITED
    Inventors: David John Dittrich, Mike Bevan, David Rushforth, David Lewis
  • Publication number: 20150107613
    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: Application
    Filed: May 2, 2013
    Publication date: April 23, 2015
    Applicant: BRITISH AMERICAN TOBACCO (INVESTMENTS) LIMITED
    Inventors: David Lewis, Andrew Davis, John Richardson, John Major, John Sampson
  • Publication number: 20150111452
    Abstract: A thermoplastic fiber is formed of a blend including a degradable polymer and a material that generates an agent upon exposure to stimulus that accelerates degradation of the degradable polymer. The degradable polymer can include a biodegradable polymer, such as poly(lactic acid) polymer, and the material that generates an agent upon exposure to stimulus can include a soy-based material.
    Type: Application
    Filed: October 22, 2014
    Publication date: April 23, 2015
    Inventor: Jeffrey Scott Dugan
  • Publication number: 20150107610
    Abstract: A rod is provided, formed from a first sheet including a tobacco material and a second sheet including a non-tobacco flavourant, the first and second sheets being gathered together and circumscribed by a wrapper. The rod may be used as a component part of an aerosol-generating article.
    Type: Application
    Filed: May 30, 2013
    Publication date: April 23, 2015
    Applicant: Philip Morris Products S.A.
    Inventors: Alessandro Metrangolo, Pierre-Yves Gindrat, John Faulkner, Jean-Pierre Schaller, Jean-Claude Schneider
  • Publication number: 20150090282
    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 a first fibrous filter material having an average fibre denier in the range 7 to 9 and a second fibrous filter material having an average fibre denier of below 7. The application also describes a filter for a smoking article comprising various other filter arrangements including absorbent and/or adsorbent materials.
    Type: Application
    Filed: May 2, 2013
    Publication date: April 2, 2015
    Applicant: BRITISH AMERICAN TOBACCO (INVESTMENTS) LIMITED
    Inventors: David Lewis, Andrew Davis, John Richardson, John Major, John Sampson
  • Patent number: 8973588
    Abstract: A filter material adapted for use as a filter element of a smoking article is provided, the filter material being in the form of a fibrous tow that includes a plurality of filaments of a degradable polyester and a plasticizer composition applied thereto, the plasticizer composition and the degradable polyester having a Relative Energy Difference calculated using Hansen Solubility Parameters of less than about 1.3. Exemplary degradable polyesters include polyglycolic acid, polylactic acid, polyhydroxyalkanoates, polycaprolactone, polybutylene succinate adipate and copolymers or blends thereof. Exemplary plasticizer compositions include one or more of dimethylisosorbide, propylene carbonate, methylbenzyl alcohol, glycerol carbonate acetate, glycerol carbonate ethyl ether, and mixtures thereof, optionally in combination with triacetin. Filter elements and smoking articles, such as cigarettes, that contain the filter material are also provided.
    Type: Grant
    Filed: July 29, 2011
    Date of Patent: March 10, 2015
    Assignee: R.J. Reynolds Tobacco Company
    Inventors: Andries Don Sebastian, Stephen Benson Sears, Thaddeus J. Jackson, Grady Lance Dooly
  • Publication number: 20150059788
    Abstract: A filter for a smoking article comprises a mouth end filter segment and a rod end filter segment. The rod end filter segment has a passage extending longitudinally therethrough. The passage has a diameter of about 1.0 mm or greater. In one embodiment, the rod end filter segment is comprised of an infinite pressure drop material. In another embodiment, the rod end filter segment is comprised of a low pressure drop material having a hollow tubular element disposed within to define the passage with an inner diameter greater than about 1.55 mm. Air dilution means are disposed in one of said filter segments to admit ventilating air into the filter.
    Type: Application
    Filed: September 5, 2014
    Publication date: March 5, 2015
    Inventors: Steven E. Brown, Luis A. Sanchez, Kai Tang, Suzanne F. Roof
  • Publication number: 20150001148
    Abstract: A filter element is disclosed made from a gathered paper web that may be crimped, embossed, and/or corrugated. In accordance with the present disclosure, the paper web is treated with at least two different additives. The first additive comprises amphiphilic molecules, having hydrophilic and hydrophobic ends such as a ketene dimer that has one or more branching groups. The second additive, on the other hand, may comprise a polymer component such as a polyalkylene glycol. The filter element may also be treated with a polyamine or an amino acid or salt thereof. In one embodiment, the filter element may be incorporated into the filter of a smoking article. The two additives together may improve smoke taste, reduce some smoke phenols, and reduce some smoke carbonyls.
    Type: Application
    Filed: June 26, 2014
    Publication date: January 1, 2015
    Inventors: Jiayi Pan, Christophe Le Moigne, Nathalie Durot, Michel Barale, Stephane Derrien
  • Publication number: 20140360518
    Abstract: A smoking article (10) incorporates a sustained release liquid delivery material (20), the liquid delivery material comprising a closed matrix structure defining a plurality of domains. A liquid composition is trapped within the domains and is releasable from the closed matrix structure upon compression of the material. The liquid delivery material (20) provides a sustained release of the liquid composition over a range of force of at least 5 Newtons. Preferably, the liquid delivery material is provided within the filter (14) of the smoking article (10).
    Type: Application
    Filed: November 2, 2012
    Publication date: December 11, 2014
    Inventor: Clement Besso
  • Patent number: 8893725
    Abstract: The invention provides a polymer prepared from a substituted 1,3-butadiene (such as neophytadiene) derived from a plant of the Nicotiana species. The invention also provides smoking articles and smokeless tobacco compositions that include the polymers described herein. Further, the invention provides a method of polymerizing a substituted 1,3-butadiene derived from a plant of the Nicotiana species, the method including reacting a substituted 1,3-butadiene derived from a plant of the Nicotiana species with one or more reagents selected from the group consisting of an anionic initiator, a radical initiator, and a Ziegler-Natta catalyst.
    Type: Grant
    Filed: January 28, 2011
    Date of Patent: November 25, 2014
    Assignee: R. J. Reynolds Tobacco Company
    Inventors: Michael Francis Dube, William Monroe Coleman, III
  • Publication number: 20140332015
    Abstract: A class of molecularly imprinted polymers that specifically recognizes and binds to nitrosamines members of which class are useful, for example, in analysis and separation of nitrosamines from biological fluids. Such molecularly imprinted polymers are also useful in methods of treating and manufacturing tobacco products and materials.
    Type: Application
    Filed: July 9, 2014
    Publication date: November 13, 2014
    Inventors: Sumita Bhattacharyya, Kevin McAdam, Anthony Rees, Börje Sellergren, Christine Widstrand
  • Publication number: 20140318561
    Abstract: The present invention relates to filter materials comprising cellulose acetate and polylactide in a ratio of about 95:5 to about 75:25 by weight, and to filters (2) or filter elements comprising such filter materials. The invention also relates to smoking articles (1) comprising the filter materials, filters (2) or filter elements.
    Type: Application
    Filed: September 21, 2012
    Publication date: October 30, 2014
    Inventors: Yahia Lemmouchi, Michele Mola
  • Publication number: 20140315720
    Abstract: A method for producing a polysaccharide ester microsphere may include forming a polysaccharide ester product from a polysaccharide synthesis, wherein the polysaccharide ester product comprises a polysaccharide ester and a solvent; diluting the polysaccharide ester product, thereby yielding a polysaccharide ester dope; and forming a plurality of polysaccharide ester microspheres from the polysaccharide ester dope. Suitable polysaccharides may include, but are not limited to, starch, cellulose, hemicellulose, algenates, chitosan, and any combination thereof. Esters thereof may be organic esters (e.g., acetate and the like), inorganic esters (e.g., sulfonates and the like), or combinations thereof. Further, the solids conent of the polysaccharide ester dope, in some instances, may be greater than about 16 wt %.
    Type: Application
    Filed: April 4, 2014
    Publication date: October 23, 2014
    Applicant: Celanese Acetate LLC
    Inventors: Denis G. Fallon, Thomas S. Garrett, Lawton E. Kizer, Karen L. Zazzara, Michael T. Combs, Richard K. Johnson, Gary Dehart
  • Publication number: 20140305455
    Abstract: A smoking article includes a lighting end longitudinally opposite a filter end that includes a filter. A fluid-releasing element is disposed longitudinally between the lighting end and filter end. A paper material circumscribes a portion of the smoking article, and a nanocellulose barrier disposed upon at least one surface or interface within the smoking article is provided, effective to control passage of fluid through the paper material.
    Type: Application
    Filed: April 11, 2013
    Publication date: October 16, 2014
    Applicant: R. J. Reynolds Tobacco Company
    Inventors: Evon L. Crooks, Leigh Ann Joyce, Paul Stuart Chapman, Billy T. Conner
  • Publication number: 20140299143
    Abstract: A spinneret having tri-arc holes may be used to produce tri-arc filaments. In some instances, tri-arc holes have a Y-shape with three prongs and each prong having an arc at the end of the prong that tapers from the end of the arc to a connection point of an adjacent arc, and tri-arc filaments have a generally-Y shape cross-section with bulbous or arcing tips. Further, tri-arc filaments may be useful in a plurality of applications including, but not limited to, filters, filters comprising particulate additives, and smoking device filters.
    Type: Application
    Filed: June 20, 2014
    Publication date: October 9, 2014
    Applicant: Celanese Acetate LLC
    Inventors: Christopher M. Bundren, Lawton E. Kizer, Denis G. Fallon, Lixin Xue
  • Patent number: 8851084
    Abstract: The present invention relates to compositions comprising a blend of cellulose acetate and a water soluble polymer. In some embodiments, the composition is water dispersive and/or biodegradable. Embodiments of the invention also relate to processes for preparing such compositions, and to materials and products including such compositions.
    Type: Grant
    Filed: July 18, 2012
    Date of Patent: October 7, 2014
    Assignee: British American Tobacco (Investments) Limited
    Inventors: Yahia Lemmouchi, Robert Quintana, Olivier Persenaire, Leila Bonnaud, Philippe Dubois
  • Publication number: 20140261502
    Abstract: Smoke filters that reduce the concentration of carbon monoxide and phenols in a smoke stream may include a porous mass section comprising a plurality of active particles, a plurality of binder particles, and an active coating disposed on at least a portion of the active particles and the binder particles, wherein the active particles and the binder particles are bound together at a plurality of contact points; and a filter section. In some instances, a filter may include a porous mass section comprising a plurality of active particles and a plurality of binder particles, wherein the active particles and the binder particles are bound together at a plurality of contact points without an adhesive; and a filter section comprising an active dopant.
    Type: Application
    Filed: March 10, 2014
    Publication date: September 18, 2014
    Applicant: Celanese Acetate LLC
    Inventors: LAWTON E. KIZER, Raymond M. Robertson
  • Publication number: 20140261503
    Abstract: The coating composition of a low ignition propensity cigarette paper according to an exemplary embodiment includes pregelatinized starch, maltodextrin, resistant maltodextrin and ethanol.
    Type: Application
    Filed: July 19, 2012
    Publication date: September 18, 2014
    Applicant: KT & G CORPORATION
    Inventors: Young-Sin Kim, Bong-Su Cheong, Seong-Ho Ju, Jong-Oh Kim, Sun-Cheol Kwon
  • Patent number: 8833376
    Abstract: The present invention concerns a biodegradable cigarette filter tow comprising composite filaments of cellulose and cellulose acetate, and a process for making such a filter tow comprising providing a solution dope comprising a blend of cellulose and cellulose acetate in an ionic liquid or in N-methylmorphilone-N-oxide (NMMO), and spinning casting the blend into a protic solvent to generate fibers or films, and converting the fibers or films into cigarette filter tow. The invention also concerns cigarette filters and cigarettes made from such a filter tow.
    Type: Grant
    Filed: September 17, 2010
    Date of Patent: September 16, 2014
    Assignee: Innovia Films Limited
    Inventors: Colin Marshall, Jamie Moffat
  • Publication number: 20140224268
    Abstract: A smoking article (10) comprises a polymeric insert (24) having a compressibility of less than about 100 N per 1.5 mm and formed of a dissolvable polymeric material comprising one or more water soluble polymers. Preferably, the polymeric insert within the smoking article (10) is in the form of a flow restriction element including a transverse barrier (28) with at least one orifice (38).
    Type: Application
    Filed: September 6, 2012
    Publication date: August 14, 2014
    Applicant: PHILIP MORRIS PRODUCTS S.A.
    Inventor: Blaise Ryter
  • Publication number: 20140216486
    Abstract: The present invention provides a cigarette mainstream smoke component adsorbent including particulate activated carbon, and a glucan film supported by the particulate activated carbon. Also, the present invention provides a cigarette filter including the cigarette mainstream smoke component adsorbent.
    Type: Application
    Filed: April 9, 2014
    Publication date: August 7, 2014
    Applicant: Japan Tobacco Inc.
    Inventors: Masahiro CHIDA, Yasuhiro NAKAGAWA, Katsuhito MISAWA, Yayoi KASAKURA
  • Publication number: 20140202478
    Abstract: An additive-containing member having first and second regions, the second region comprising a predetermined region (5) having a reduced strength limit relative to the first region so that the predetermined region is caused to break when pressure is applied to the additive-containing member, thereby to release additive, wherein the predetermined region is at a seal between two parts (1,2) of the additive-containing member.
    Type: Application
    Filed: May 11, 2012
    Publication date: July 24, 2014
    Applicant: British American Tobacco (Investments) Limited
    Inventors: Edward Awty, Charanjit Nandra, Jane Nicholls, Alfred Spencer, David Russell, Paul Farenden
  • Publication number: 20140196728
    Abstract: A method of producing a flavoured tobacco smoke filter or filter element comprising a self sustaining longitudinally extending cylindrical core comprising fibres or filaments of tobacco smoke filtering material which are bonded at their points of contact; the method comprising a step of applying a flavouring agent to a longitudinally advancing flow of filters and/or filter elements and/or multiple filter rods. Filters and filter elements are also provided.
    Type: Application
    Filed: July 4, 2012
    Publication date: July 17, 2014
    Inventors: Ahmad Fashihul Lisan, Sudirman Widiarto, Lee Philip O'donovan