Patents Examined by J. M. Gray
  • Patent number: 6471727
    Abstract: The present invention provides compositions, useful for making lyocell fibers, having a high hemicellulose content, a low lignin content and including cellulose that has a low average degree of polymerization (D.P.). Further, the present invention provides processes for making compositions, useful for making lyocell fibers, having a high hemicellulose content, a low lignin content and including cellulose that has a low average degree of polymerization. The present invention also provides lyocell fibers containing a high proportion of hemicellulose. Further, the lyocell fibers of the present invention have enhanced dye-binding properties and a reduced tendency to fibrillate.
    Type: Grant
    Filed: January 23, 2001
    Date of Patent: October 29, 2002
    Assignee: Weyerhaeuser Company
    Inventors: Mengkui Luo, Vincent A. Roscelli, Amar N. Neogi, James E. Sealey, II, Richard A. Jewell
  • Patent number: 6468655
    Abstract: The present invention discloses a polyester fiber having a birefringence of 0.025 or more, comprising at least 90% by weight of a poly (trimethylene terephthalate), on which a finishing agent composed essentially of (1) an aliphatic hydrocarbon ester having a molecular weight of 300 to 800 and/or a mineral oil having a Redwood viscosity at 30° C. of 40 to 500 seconds, (2) a polyether having a structure containing an ethylene oxide unit and a propylene oxide unit, (3) a nonionic surfactant, and (4) an ionic surfactant in a specific proportion is applied.
    Type: Grant
    Filed: July 28, 2000
    Date of Patent: October 22, 2002
    Assignee: Asahi Kasei Kabushiki Kaisha
    Inventors: Jinichiro Kato, Katsuhiro Fujimoto
  • Patent number: 6465097
    Abstract: A new insulated wire resists heat cycles under severe operating ambient temperatures without reducing the lifetime of coils in which the insulated wire is used. The insulated wire has on the insulating coating a fluororesin coating without or with a binder constituting 20 wt. % or less. The fluororesin coating comprises fluororesin such as polytetrafluoroethylene, a tetrafluoroethylene-perfluoroalkylvinylether copolymer, or a fluoroethylene-propylene copolymer.
    Type: Grant
    Filed: November 23, 1999
    Date of Patent: October 15, 2002
    Assignee: Sumitomo Electric Industries, Ltd.
    Inventors: Isao Ueoka, Masaharu Kurata, Hideyuki Hashimoto
  • Patent number: 6460597
    Abstract: Method of making articles comprising polycrystalline &agr;-Al2O3 fibers within a matrix of aluminum, or an alloy of aluminum and up to about 2% copper.
    Type: Grant
    Filed: April 11, 2000
    Date of Patent: October 8, 2002
    Assignee: 3M Innovative Properties Company
    Inventors: Colin McCullough, Andreas Mortensen, Paul S. Werner, Herve E. Deve, Tracy L. Anderson
  • Patent number: 6455154
    Abstract: A coating liquid for forming porous silica coating, comprising a product of reaction between a short fiber silica and a hydrolyzate of an alkoxysilane of the formula XnSi(OR)4-n or a halogenated silane of the formula XnSiX′4-n (in the formula, X represents a hydrogen atom, a fluorine atom, an alkyl group having 1 to 8 carbon atoms, an aryl group or a vinyl group; R represents a hydrogen atom, an alkyl group having 1 to 8 carbon atoms, an aryl group or a vinyl group; X′ represents a chlorine atom or a bromine atom; and n is an integer of 0 to 3). A coated substrate comprising a porous silica coating film formed from the above coating liquid for forming porous silica coating. A short fiber silica having an average diameter (D) of 10 to 30 nm, a length (L) of 30 to 100 nm and an aspect ratio (L/D) of 3 to 10.
    Type: Grant
    Filed: April 28, 2000
    Date of Patent: September 24, 2002
    Assignee: Catallysts & Chemicals Industries Co., Ltd.
    Inventors: Akira Nakashima, Kazuaki Inoue, Ryo Muraguchi, Michio Komatsu
  • Patent number: 6447906
    Abstract: The present invention provides molded fireplace articles comprising a plurality of non-white inorganic fibers that are substantially uniformly coated with a colored metal oxide. The present invention further provides a method of manufacturing molded fireplace articles comprising: providing a plurality of non-white inorganic fibers; mixing the fibers with a binder and a liquid to form a slurry; pouring the slurry into a mold having a desired shape; and forming the slurry into a shaped article. A method of preparing non-white inorganic fibers is also provided, the method comprising the steps of: providing a colorant solution formed by dispersing or dissolving a metal compound into a carrier liquid, providing an inorganic fiber, applying the colorant solution to the inorganic fiber to form a colorant coated fiber, and heating the colorant coated fiber to a temperature sufficient to decompose the metal compound to a non-white metal oxide that is substantially uniformly coated on said fibers.
    Type: Grant
    Filed: November 30, 1999
    Date of Patent: September 10, 2002
    Assignee: Unifrax Corporation
    Inventors: Michael J. Andrejcak, Bruce K. Zoitos
  • Patent number: 6447904
    Abstract: A fuser member having a support metallic core and a layer of material formed over the metallic core, the layer includes composite material, including a high molecular weight reactive polyfunctional poly(C(1-6) alkyl)siloxane polymer; a cross-linked poly(dialkylsiloxane) incorporating an oxide, wherein the poly(dialkylsiloxane) has a weight average molecular weight before crosslinking of about 5,000 to 80,000; and a silane crosslinking agent.
    Type: Grant
    Filed: December 16, 1998
    Date of Patent: September 10, 2002
    Assignee: NexPress Solutions LLC
    Inventors: Stephen V. Davis, Jiann H. Chen, Robert A. Lancaster
  • Patent number: 6444187
    Abstract: Applying a sizing agent as a water dispersed sizing agent to a continuous carbon fiber bundle consisting of 20,000 to 150,000 filaments, controlling the packing density in a range of 5,000 to 20,000 D/mm, cutting the carbon fiber bundle in a wet state of 10 to 35 wt % in solution content at the time of cutting, and drying with vibration at a solution content of 15 to 45 wt % before drying.
    Type: Grant
    Filed: March 21, 2000
    Date of Patent: September 3, 2002
    Assignee: Toray Industies, Inc.
    Inventors: Toshiyuki Miyoshi, Haruo Obara, Keizo Ono, Tetsuyuki Kyono
  • Patent number: 6444314
    Abstract: The present invention is directed to lyocell fibers having a high hemicellulose content of at least 5%, a low lignin content as measured by a kappa number less than 2.0 and including cellulose that has a low average degree of polymerization (D.P.) in the range of 200 to 1100. Further, the lyocell fibers of the present invention have enhanced dye-binding properties and a reduced tendency to fibrillate.
    Type: Grant
    Filed: October 30, 2001
    Date of Patent: September 3, 2002
    Assignee: Weyerhaeuser
    Inventors: Mengkui Luo, Vincent A. Roscelli, Amar N. Neogi, James E. Sealey, II, Richard A. Jewell
  • Patent number: 6440523
    Abstract: The present invention provides lyocell fibers made from compositions having a high hemicellulose content of at least 5% by weight, a low kappa number of less than 2.0 and including cellulose that has a low average degree of polymerization (D.P.) value of about 200 to 1,100, and a narrow molecular weight distribution ( R) of less than 2.8.
    Type: Grant
    Filed: October 10, 2001
    Date of Patent: August 27, 2002
    Assignee: Weyerhaeuser
    Inventors: James E. Sealey, II, W. Harvey Persinger, Jr., Mengkui Luo, Vincent A. Roscelli, Amar N. Neogi
  • Patent number: 6440547
    Abstract: The present invention provides lyocell films, having a high hemicellulose content of at least 5%, a low copper number of less than 2, and including cellulose that has a low average degree of polymerization (D.P.) in the range of about 200 to 1100.
    Type: Grant
    Filed: October 30, 2001
    Date of Patent: August 27, 2002
    Assignee: Weyerhaeuser
    Inventors: Mengkui Luo, Vincent A. Roscelli, Amar N. Neogi, James E. Sealey, II, Richard A. Jewell
  • Patent number: 6436537
    Abstract: There is disclosed an insulated wire, which comprises at least one insulating layer formed by applying and baking, directly or via another insulating layer on a conductor, a resin composition containing at least one selected from the group consisting of a polyamidimide resin and a polyimide resin, each having, in the molecular structure of the resin, a structure represented by formula (I), and/or a resin composition containing at least one selected from the group consisting of a polyamidimide resin and a polyimide resin, each having, in the molecular structure of the resin, a structure represented by formula (II), and said insulated wire has 0.2% yield stress of not more than 110 Mpa. This insulated wire, even if its insulation coating is made thinner, is excellent in resistance to scratches, and it is able to prevent the coating from breakage at the time of coil working, especially of the insertion of a coil into a stator slot, under rigorous conditions.
    Type: Grant
    Filed: October 13, 1999
    Date of Patent: August 20, 2002
    Assignee: The Furukawa Electric Co., Ltd.
    Inventors: Masakazu Mesaki, Yoshinori Tatematsu, Masaki Sugiura
  • Patent number: 6432531
    Abstract: A cationic fibrous acetate salt of boehmite alumina produced by providing a slurry of water and basic aluminum acetate, stirring the slurry to ensure substantially complete mixing thereof, reacting the slurry in a vessel for a time, temperature, and stirring rate sufficient to produce a fibrous cationic acetate salt of boehmite alumina having a zeta potential of greater than about 25 and a weight ratio of aluminum to acetate of less than about 4.
    Type: Grant
    Filed: May 18, 2001
    Date of Patent: August 13, 2002
    Inventors: Roy J. Sippel, Eugene A. Pasek, Ke Feng
  • Patent number: 6428893
    Abstract: A method of continuous application of a graded index plastics optical fiber in which the refractive index is highest in the center and decreases progressively towards the periphery, said fiber having a plurality of layers of resin deposited concentrically, the method comprising making a plurality of mixtures, each mixture comprising at least one polymer P and a reactive diluting agent including at least two monomers, then depositing said mixtures in the form of coaxial layers, allowing interdiffusing to take place between the layers, and finally crosslinking the polymer P and/or the reactive diluting agent.
    Type: Grant
    Filed: September 30, 1999
    Date of Patent: August 6, 2002
    Assignee: Nexans
    Inventors: Jean-Yves Barraud, Dominique Morichere, Alain Pastouret, Bernard Boutevin, Alain Rousseau
  • Patent number: 6426141
    Abstract: The invention relates to a process for the high-speed false twist texturing of yarns of synthetic filaments, in which a finish containing at least one water-soluble lubricant (A) and one water-insoluble liquid (B) with a viscosity of 2 to 50 mPas at 20° C. is applied to the yarns in the form of an aqueous emulsion, after which the filaments are textured on the false twist principle in texturing machines with a short high-temperature heater.
    Type: Grant
    Filed: July 23, 1999
    Date of Patent: July 30, 2002
    Assignee: Cognis Deutschland GmbH & Co. KG
    Inventors: Raymond Mathis, Norbert Bialas, Andreas Lippman
  • Patent number: 6426142
    Abstract: Yarns having a spin finish composition thereon comprising at least about 10 percent by weight based on the spin finish composition of components (a) and (b) having the formula R1(CO)x—O—(CH(R2)—CH2—O)y—(CO)zR3, wherein each of R1 and R3 is selected from the group consisting of hydrogen or an allyl group having from one to 22 carbon atoms or an alkylene hydroxy group having from one to 22 carbon atoms, x is zero or one, R2 may vary within component (a) or component (b) and is selected from the group consisting of hydrogen or an alkyl group having from one to four carbon atoms, y is zero, or fiom one to 25, and z is zero or one, in component (a), x and z are equal to zero and the average molecular weight of component (a) is less than or equal to 1,900 and if R2 varies, component (a) is a random copolymer; and in component (b), at least x or z is equal to one or component (b) is a complex polyoxyethylene glyceride-containing compound having greater than 10 polyoxyethylene units; (c)
    Type: Grant
    Filed: October 15, 1999
    Date of Patent: July 30, 2002
    Assignee: AlliedSignal Inc.
    Inventor: Ralf Klein
  • Patent number: 6420013
    Abstract: Disclosed is a soft, textured, multi-ply tissue paper product. The tissue paper product has at least one ply of multi-region construction with a first region that is raised above a second region. The ply of multi-region construction is orientated so that its raised region is directed toward the exterior of the tissue paper product. A chemical softening composition is surface applied to at least a portion of the raised region of the ply comprising the multi-ply tissue paper product. The chemical softener preferably includes an effective amount of a softening active ingredient; a vehicle in which the softening active ingredient is dispersed; and an electrolyte dissolved in the vehicle. The electrolyte causes the viscosity of the composition to be less than the viscosity of a dispersion of the softening active ingredient in the vehicle alone.
    Type: Grant
    Filed: August 27, 1999
    Date of Patent: July 16, 2002
    Assignee: The Procter & Gamble Company
    Inventors: Kenneth Douglas Vinson, Paul Dennis Trokhan, Monica Ho-Kleinwaechter
  • Patent number: 6416860
    Abstract: A semiconducting composition for the inner semiconducting layer of an electric cable, an electric cable incorporating the composition, and a method of producing a cross-linked inner semiconducting layer of an electric cable are disclosed. The semiconducting composition comprises, based on the total weight of the composition, (a) 30-90% by weight of an ethylene copolymer, (b) carbon black in an amount at least sufficient to make the composition semiconducting, (c) 0-8% by weight of a peroxide cross-linking agent, (d) 0-8% by weight of conventional additives, characterized in that said ethylene copolymer (a) is an ethylene-methyl (meth)acrylate copolymer, preferably comprising 5-25% by weight of methyl(meth)acrylate, based on the weight of the copolymer.
    Type: Grant
    Filed: March 24, 2000
    Date of Patent: July 9, 2002
    Assignee: Borealis A/S
    Inventors: Bill Gustafsson, Ola Fagrell
  • Patent number: 6413637
    Abstract: Metal cord for use in reinforcing fabric for articles made from rubber, such as pneumatic tires, conveyor belts, flexible tubes, and similar, comprising a plurality of such metal cords orientated parallel to each other in a single direction and in which each cord comprises metal wires wound spirally around each other, wherein at least one of the wires of the cord consists of a shape memory material. During the phase of incorporation of the cords into the elastomeric material, the shape memory wire tends to recover the shape memorized initially and, by means of the force generated during this recovery, transmits by friction to the surrounding wires forces tending to shorten the pitch of the cord with spacing of each wire from the next, resulting in good penetration of elastomeric material between the wires. The closure of the cord is maintained in the subsequent heat cycles, owing to the memory degradation characteristics imparted to the wire.
    Type: Grant
    Filed: April 2, 2001
    Date of Patent: July 2, 2002
    Assignee: Pirelli Coordinamento Pneumatici S.p.A.
    Inventors: Marco Cipparrone, Gurdev Orjela, Guido Riva
  • Patent number: 6410126
    Abstract: In this tape (15), the fibers are discontinuous and have a length distribution such that the mean fiber length, that is to say the mean length of 50% of the fibers in a specimen, is between approximately 40 and 70% of the length of the longest fiber in the specimen, the fibers being combined by means of a resin (10) or of an adhesive having a fugitive nature. Application to the production of components made of composites.
    Type: Grant
    Filed: May 12, 2000
    Date of Patent: June 25, 2002
    Assignee: Sa Schappe
    Inventors: Jean Guevel, Guy Bontemps