Patents Examined by Dennis R. Cordray
  • Method for producing a sizing agent composition, a sizing agent composition and use thereof
    Patent number: 10781555
    Abstract: The present invention relates to a sizing agent composition comprising starch, lignosulfonate and poly(alkyl acrylate), poly(alkyl (meth)acrylate), a mixture of poly(alkyl acrylate) and poly(alkyl methacrylate) or a copolymer of alkyl acrylate and alkyl (meth)acrylate. The present invention further relates to a method for preparing the sizing agent composition, and use of the sizing agent composition for sizing paper, paper products or board.
    Type: Grant
    Filed: December 15, 2016
    Date of Patent: September 22, 2020
    Assignee: Kemira Oyj
    Inventors: Anneli Lepo, Elsi Turunen, Tarja Turkki
  • Dry strength composition, its use and method for making of paper, board or the like
    Patent number: 10781556
    Abstract: The invention relates to an aqueous dry strength composition suitable for use in manufacture of paper, board or the like. The composition includes a mixture of a synthetic polymer component, which is a copolymer of acrylamide and at least one anionic monomer, and a cationic starch component. The polymer component has an anionicity of 1-60 mol-%. The synthetic polymer component and cationic starch component provide the composition with a charge density in the range of 0.05-1 meq/g, when measured at pH 2.8, and 0.2-?3 meq/g, when measured at pH 7.0. The invention also relates to a method for making of paper, board or the like, where the dry strength composition is diluted with water, and the solution of the dry strength composition is added to the fibre stock before or after the addition of a cationic strength agent.
    Type: Grant
    Filed: September 26, 2017
    Date of Patent: September 22, 2020
    Assignee: Kemira Oyj
    Inventors: Matti Hietaniemi, Asko Karppi, Mikko Virtanen
  • Method of recycling by-product generated in papermaking process
    Patent number: 10774471
    Abstract: A method of recycling a by-product generated in a papermaking process including, pulverizing a by-product produced in a papermaking process to prepare a pulverized product, burning the pulverized product to prepare a burned product, hydrating the burned product to prepare a hydrate; and manufacturing paper from the hydrate and a paper slurry is provided, which allows reuse of by-products generated in conventional papermaking processes such as lime mud and lime kiln CaO, which is environmentally friendly as well as cost-effective, and also the level of whiteness of the by-products such as lime mud and lime kiln CaO generated in a papermaking process can be improved to that of a high-grade raw material, making it possible to also improve the whiteness of paper.
    Type: Grant
    Filed: February 22, 2018
    Date of Patent: September 15, 2020
    Assignee: Korea Institute Of Geoscience And Mineral Resource
    Inventor: Ji-Whan Ahn
  • Friction material comprising aramid
    Patent number: 10774892
    Abstract: A friction paper including filler, para-aramid pulp, and resin, characterised in that the para-aramid pulp includes 0.1 to 10 wt. % of polyvinyl pyrrolidone (PVP), the paper having a grammage in the range of 100 to 800 g/m2. It has been found that the use of a PVP-containing para-aramid pulp leads to improved friction performance as compared to the use of para-aramid pulp not containing PVP. Effects obtained include improved friction properties, improved strength properties, and improved filler retention.
    Type: Grant
    Filed: August 22, 2017
    Date of Patent: September 15, 2020
    Assignee: TEIJIN ARAMID B.V.
    Inventors: Walter Nijhuis, Frank Diedering, Jan-Cees Tiecken
  • Fabric having tobacco entangled with structural fibers
    Patent number: 10736354
    Abstract: A smokeless tobacco product includes smokeless tobacco and structural fibers. The structural fibers forming a network in which the smokeless tobacco is entangled. The structural fibers have a composition different from the smokeless tobacco. The tobacco-entangled fabric can have an overall oven volatiles content of at least 10 weight percent. In some embodiments, the structural fibers form a nonwoven network. In some embodiments, fibrous structures of the smokeless tobacco are entangled with the structural fibers.
    Type: Grant
    Filed: October 11, 2019
    Date of Patent: August 11, 2020
    Assignee: Altria Client Services LLC
    Inventors: Frank Scott Atchley, James M. Rossman, Munmaya K. Mishra
  • Smoking article filter and insertable filter unit therefor
    Patent number: 10729171
    Abstract: A smoking article filter (20) comprises a recess (25) to receive a filter insert unit (30). The filter insert unit (30) is secured to the filter (20) once inserted. The filter (20) and the filter insert unit (30) may comprise additives such as flavourants, colourants or sorbents.
    Type: Grant
    Filed: June 27, 2012
    Date of Patent: August 4, 2020
    Assignee: BRITISH AMERICAN TOBACCO (INVESTMENTS) LIMITED
    Inventors: Graham Penrose, Michael Malthouse, David Wake, Gary Fulcher, Michael Simpson, Aaron Brookbank, Gordon Grierson, Jon Hindley, John Sampson, Rabya Khan-Dar, Karl Kaljura, Lean Ho Ong, John Richardson, John Major, Richard Young
  • High efficiency wet strength resins from new cross-linkers
    Patent number: 10711401
    Abstract: Compositions and methods related to new wet strength resins are provided. By using functionally-symmetrical cross-linkers and mono-functional modifiers, and separating the steps of reacting a prepolymer with the cross-linkers from the reaction of intermediate cross-linked prepolymer with epichlorohydrin, new wet strength resin products are provided having improved properties.
    Type: Grant
    Filed: October 2, 2017
    Date of Patent: July 14, 2020
    Assignee: ECOLAB USA INC.
    Inventors: Clay E. Ringold, Cornel Hagiopol, Dexter C. Johnson
  • Method for treating tobacco plants with enzymes
    Patent number: 10709166
    Abstract: A method of modifying the content of certain chemical compounds in tobacco materials is provided, the method including treatment of a tobacco plant or portion thereof with at least one enzyme. For example, the method may modify the content of tobacco smoke toxicant precursors in tobacco materials, which can result in a modification in toxicant production when the tobacco material is exposed to elevated temperatures. The type of tobacco plant or portion thereof treated according to the invention can be, for example, a tobacco seed, a tobacco seedling, an immature live plant, a mature live plant, a harvested plant, or a plant derivative. Smoking articles and other tobacco products including such enzyme-treated tobacco materials are also provided.
    Type: Grant
    Filed: October 19, 2016
    Date of Patent: July 14, 2020
    Assignee: R.J. Reynolds Tobacco Company
    Inventors: Serban C. Moldoveanu, Jerry Wayne Marshall, Marvin Glenn Riddick, Michael F. Davis
  • Papermaking process of increasing ash content of a paper product and a paper product obtained by the same
    Patent number: 10697121
    Abstract: A process for flocculating filler particles in water is provided. The process comprises adding a flocculant to a mixture comprising filler particles and water, wherein the flocculant has a reduced specific viscosity (“RSV”) of from about 5 dL/g to about 16 dL/g, a viscosity average molecular weight of from about 1,200,000 to about 7,500,000, and a cationic charge of from about 5 mol % to about 50 mol %. Flocs formed by flocculation of the filler particles and the flocculant have a median particle size of from about 10 ?m to about 150 ?m. The filler is not precipitated calcium carbonate alone. The flocs provided by the process are useful in increasing ash content of a paper product.
    Type: Grant
    Filed: October 27, 2015
    Date of Patent: June 30, 2020
    Assignee: ECOLAB USA INC.
    Inventors: Qinglong Rao, Yulin Zhao, Weiguo Cheng, Stephen B. Ashton, Aleksandar Todorovic, Alan Smith
  • Smoking article with liquid delivery material
    Patent number: 10694778
    Abstract: A smoking article (10) incorporates a liquid release component of a sustained release liquid delivery material (20), the liquid delivery material comprising a closed matrix structure having a polymer matrix 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 liquid release component. The polymer matrix is formed of one or more anionic polysaccharides cross-linked by multivalent cations. A filler comprising one or more amphiphilic polysaccharides is incorporated within the polymer matrix. The one or more amphiphilic polysaccharides of the filler are selected from starch chemically modified to be amphiphilic and starch derivatives chemically modified to be amphiphilic.
    Type: Grant
    Filed: December 18, 2014
    Date of Patent: June 30, 2020
    Assignee: Philip Morris Products S.A.
    Inventors: Clement Besso, Laurent Lavanant
  • Method for forming a composite comprising MFC and a composite produced by the method
    Patent number: 10683616
    Abstract: The invention provides a method for the production of a composite comprising microfibrillated cellulose (MFC) and precipitated calcium carbonate. The method is characterized in that MFC is added to a suspension of calcium hydroxide during carbonation, whereby calcium carbonate is precipitated onto fibers or fibrils of the MFC in a controlled manner. By adding microfibrillated cellulose to the calcium suspension during the carbonation, the brightness and the strength of the MFC/PCC-composite is enhanced. Moreover, the inventive method facilitates the distribution of calcium dioxide and MFC in the suspension and thus gives rise to a more homogenous product.
    Type: Grant
    Filed: January 5, 2017
    Date of Patent: June 16, 2020
    Assignee: Stora Enso OYJ
    Inventors: Philip Håkansson, Isto Heiskanen
  • Combustible heat source with improved binding agent
    Patent number: 10676687
    Abstract: A combustible heat source for a smoking article is provided, including carbon and a binding agent. The binding agent includes a combination of three binder components: an organic polymeric binder material, a carboxylate burn salt, and at least one non-combustible inorganic binder material. The at least one non-combustible inorganic binder material includes a sheet silicate material. Preferably, the combustible heat source further includes an ignition aid.
    Type: Grant
    Filed: March 28, 2017
    Date of Patent: June 9, 2020
    Assignee: Philip Morris Products S.A.
    Inventors: Alexandre Malgat, Laurent Poget
  • Manufacturing process for papermaking belts using 3D printing technology
    Patent number: 10675810
    Abstract: A papermaking belt including zones of material laid down successively using a 3D printing process. The zones include at least a pocket zone configured to form three dimensional structures in a paper web by applying vacuum to pull the paper web against the pocket zone. In at least one exemplary embodiment, the zone also include at least one vacuum breaking zone configured to limit an amount of paper fibers pulled through the pocket zone by the applied vacuum.
    Type: Grant
    Filed: April 23, 2018
    Date of Patent: June 9, 2020
    Assignee: STRUCTURED I, LLC
    Inventors: James E. Sealey, II, Bryd Tyler Miller, IV, Justin C. Pence, Taras Z. Andrukh, Shane Ervin Hayes
  • Paperboard product
    Patent number: 10669675
    Abstract: The present disclosure relates to paperboard having an improved basis weight to bending strength relationship and methods of making paperboard having an improved basis weight to bending strength relationship. In particular, a paperboard provided herein includes a refined cellulose in at least 1 ply.
    Type: Grant
    Filed: October 16, 2015
    Date of Patent: June 2, 2020
    Assignees: General Mills, Inc., University of Maine System Board of Trustees
    Inventors: George Tuszkiewicz, Matthew W Lorence, Mark Paradis, Michael A Bilodeau
  • Compositions and methods for treating filler in papermaking
    Patent number: 10669672
    Abstract: Method of papermaking comprises: treating filler with a starch and a flocculant to form a filler floc; combining the filler floc with the cellulose fiber stock; and forming a paper mat from the combination of filler floc and cellulose fiber stock. The method have been found to result in larger particle sizes for the filler flocs, improved shear stability, and improved sheet strength in the paper mat.
    Type: Grant
    Filed: September 30, 2016
    Date of Patent: June 2, 2020
    Assignee: Ecolab USA Inc.
    Inventor: Qinglong Rao
  • Multi-layer cardboard material and method for producing a multi-layer cardboard material
    Patent number: 10654253
    Abstract: The invention relates to a multi-layer cardboard material (10), comprising at least one first fibrous-material layer (12), which has a cellulose-containing base material, and at least one second fibrous-material layer (14) comprising a mixture of cellulose-containing material and fine material particles, wherein a material of origin for the fine material particles is coco peat and the fine material particles have a particle size <0.5 mm, in particular <0.3 mm. The invention further relates to a method for producing a multi-layer cardboard material (10), in particular a multi-layer cardboard web, comprising at least one first and one second fibrous-material layer (12, 14), and the use of a fibrous-material layer comprising a mixture of cellulose-containing material and fine material particles.
    Type: Grant
    Filed: July 15, 2016
    Date of Patent: May 19, 2020
    Assignee: MAYR-MELNHOF KARTON AG
    Inventors: Michael Zischka, Mathias Magin
  • Lightweight paper board
    Patent number: 10640925
    Abstract: A fibrous material, method for making the same, and articles comprising the same are shown and described. The fibrous material is a low density material that exhibits high strength properties. In embodiments, the fibrous material has a density of 0.15 g/cm3 or less and a tensile strength of 10 N/inch or greater. The fibrous material may be in the form of a paperboard and is suitable for use in a variety of applications including as a packaging material.
    Type: Grant
    Filed: February 13, 2018
    Date of Patent: May 5, 2020
    Assignee: Flex R&D Inc.
    Inventor: Prakash Mallya
  • Core/shell polymer particles as surface sizing agents
    Patent number: 10640926
    Abstract: The present invention provides a core/shell polymer particle for surface sizing of cellulosic products, wherein the core polymer and the shell polymer of the core/shell polymer particle are polymerized from monomers comprising at least 40%, by weight of monomers selected from branched C3-10-alkyl (meth)acrylate, styrene, linear C1-10-alkyl (meth)acrylate, and acrylonitrile, based on the total weight of the monomers of the core/shell polymer particle; provided that the polymer of the core/shell polymer particle comprises at least 40% by weight of branched C3-6-alkyl (meth)acrylate and at least 50% by combined weight of branched C3-10-alkyl (meth)acrylate and styrene, linear C1-10-alkyl (meth)acrylate, and/or acrylonitrile, based on the total weight of the monomers of the core/shell polymer particle.
    Type: Grant
    Filed: September 2, 2016
    Date of Patent: May 5, 2020
    Assignee: KEMIRA OYJ
    Inventors: Anneli Lepo, Elsi Turunen, Tarja Turkki, Bernhard Überbacher
  • Extended heater and heating assembly for an aerosol generating system
    Patent number: 10638794
    Abstract: A heating assembly for heating an aerosol-forming substrate is provided, including a heater including an electrically resistive heating element and a heater substrate; and a heater mount coupled to the heater, the heating element including a first portion and a second portion configured such that, when an electrical current is passed through the heating element, the first portion is heated to a higher temperature than that of the second portion, the first portion of the heating element being disposed on a heating area of the heater substrate and the second portion of the heating element being disposed on a holding area of the heater substrate, the heater mount being fixed to the holding area of the heater substrate, and the second portion of the heating element being longer than the first portion of the heating element.
    Type: Grant
    Filed: March 22, 2016
    Date of Patent: May 5, 2020
    Assignee: Philip Morris Products S.A.
    Inventors: Boris Mahler, Mirko Minzoni, Julien Plojoux
  • Absorbent paper products having unique physical strength properties
    Patent number: 10640928
    Abstract: An absorbent towel paper product is disclosed. The absorbent towel paper product has two web plies. Each web has from 20% to 90% of a soft wood pulp fiber mixture having from 18.5% to 88.5% of optionally refined soft wood pulp fiber; from 0.25% to 5.0% of cationic strengthening polymer, from 10% to 55% of a hard wood pulp fiber mixture; and not more than 10% moisture. The two-ply paper product has a Mean Square Dry Tensile Index ranging from 10 N·m/g to 18 N·m/g and a Cross-directional Wet Tensile Strength to Cross-directional Dry Tensile Strength Ratio value ranging from 0.295 to 0.33.
    Type: Grant
    Filed: September 19, 2017
    Date of Patent: May 5, 2020
    Assignee: Mercer International Inc.
    Inventor: Tobias Ziegenbein