Patents Examined by J. M. Gray
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Patent number: 6858551Abstract: A fiber which includes a thermoplastic polymer and particles of a ferroelectric material dispersed therein. The thermoplastic polymer may be, for example, a polyolefin, such as polypropylene or polyethylene, and the ferroelectric material may be barium titanate. The ferroelectric material may be present at a level of from about 0.01 to about 50 percent by weight (from about 0.001 to about 13 percent by volume), and will have a longest dimension in a range of from about 10 nanometers to about 10 micrometers. The fiber may be exposed to an electric field. A plurality of the fibers may be employed to form a knitted or woven fabric or a nonwoven web. Also provided is a method of preparing fibers containing particles of a ferroelectric material. The method includes destructuring the ferroelectric material in the presence of a liquid and a surfactant to give destructured particles; the liquid is a solvent for the surfactant and the surfactant is adapted to stabilize the destructured particles against agglomeration.Type: GrantFiled: March 12, 1999Date of Patent: February 22, 2005Assignee: Kimberly-Clark Worldwide, Inc.Inventors: Leonid Anthony Turkevich, David Lewis Myers
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Patent number: 6858296Abstract: This invention is directed to a cable for electrical conductors which has insulation layer which includes a 2,2,6,6-tetramethylpiperidine and a strippable insulation shield layer which includes a copolymer of acrylonitrile and butadiene.Type: GrantFiled: October 5, 2000Date of Patent: February 22, 2005Assignee: Union Carbide Chemicals & Plastics Technology CorporationInventors: Alfred Mendelsohn, Kawai Peter Pang, Timothy James Person, Jeffrey Morris Cogen
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Patent number: 6855421Abstract: A positive variable resistive yarn having a core, a sheath, and an insulator. The sheath includes distinct electrical conductors intermixed within a thermal expansive low conductive matrix. As the temperature of the yarn increases, the resistance of the sheath increases.Type: GrantFiled: May 7, 2003Date of Patent: February 15, 2005Assignee: Milliken & CompanyInventors: Alfred R. DeAngelis, Earle Wolynes
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Patent number: 6852412Abstract: A fire and thermal insulative wrap for protecting building wires and cables is provided comprising a layered construction of a support substrate and a coating, thereon, of an intumescent material. Optionally, a third ceramic layer is provided for added fire protection and electrical properties. Wires and cables constructed to include the wraps are cost effective because construction can include the substitution of low cost polyolefin resins and compounds for fluorocarbon resins and smoke suppressed PVC compounds. The new constructions based on polyolefin components advantageously produce lower levels of smoke and toxic and corrosive gases during a fire event when compared with the halogen based PVC and fluorocarbon systems. Moreover, the superior fire and thermal protection provided adds safety gained from increased circuit integrity. Finally, the wrap thickness being slight does not add significantly to cable size and therefore promotes an installation advantage.Type: GrantFiled: September 4, 2001Date of Patent: February 8, 2005Inventor: Michael John Keogh
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Patent number: 6852401Abstract: A composite-based rim and methods for manufacturing such a rim are provided. The rim includes multiple fiber-based, co-mingled layers, wherein the strength and/or stiffness of the layers increases from the innermost layer of the rim to the outermost layer of the rim, but where the radial stress and strain generated in the rim decreases from the innermost layer to the outermost layer. Incorporation of this rim into a high stress and strain usage environment, such as a flywheel system, allows the rim to be spun at high speeds in order to generate high levels of kinetic energy while beneficially managing the amount of strain and radial stresses generated within the rim, and, in turn, minimizing or at least controlling the formation and propagation of cracks within the rim.Type: GrantFiled: September 13, 2001Date of Patent: February 8, 2005Assignee: Beacon Power CorporationInventors: Ward R. Spears, Cynthia L. Shirey
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Patent number: 6849332Abstract: A string binder is disclosed which is useful for making reinforcing articles for use in the manufacture of molded composite articles. The string binder comprises a fibrous carrier substrate covered with a solidified coating comprising a binder resin material having an acid value of less than about 30 mg KOH/g of resin. Additionally, the fibrous carrier substrate may be coated with at least one layer of a pre-coating or post-coating comprising a catalyst composition. The string binder may be co-roved with one or more ends of a separate fibrous reinforcing material to make a product suitable for use in various molding applications.Type: GrantFiled: June 14, 2000Date of Patent: February 1, 2005Assignee: Owens Corning Fiberglas Technology, Inc.Inventors: Brian William Ables, William G. Hager, Timothy W. Ramey, Jay J. Beckman, Diane M. Hulett
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Patent number: 6846563Abstract: A sizing composition which is useful for coating glass strands contains a solution having a solvent content of less than 5% by weight. The solution contains at least 45% by weight of components capable of curing. At least 40% of the components capable of curing have a molecular mass of between 750 and 5000. The components capable of curing contain at least one mixture containing a) one or more components having at least one acrylic reactive functional group and/or methacrylic reactive functional group, and b) one or more components having at least one primary amine reactive functional group and/or secondary amine reactive functional group.Type: GrantFiled: May 16, 2001Date of Patent: January 25, 2005Assignee: Saint-Gobain Vetrotex France S.A.Inventor: Patrick Moireau
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Patent number: 6838401Abstract: A heat-resistant fiber paper sheet which is formed from staple fibers made from a heat-resistant organic polymer, undrawn or low ratio drawn para-aromatic polyamide staple fibers, and an organic resin binder and/or fibrids comprising a heat-resistant organic polymer as main components, wherein the amount of said staple fibers is 45 to 97 percent by weight based on the total amount of said heat-resistant fiber paper sheet; the total amount of said organic resin binder and/or said fibrids is 3 to 55 percent by weight based on the total amount of said heat-resistant fiber paper sheet; and said organic resin binder is cured, and/or said undrawn or low ratio drawn para-aromatic polyamide staple fibers and said fibrids are partially softened, deformed and/or melted to exhibit the actions of binders.Type: GrantFiled: August 4, 2000Date of Patent: January 4, 2005Assignee: Teijin LimitedInventors: Sadamitsu Murayama, Michikage Matsui, Masanori Wada, Shigeru Ishihara
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Patent number: 6835454Abstract: The modification of strings for sports equipment and musical instruments and other stringed devices by coating with fluoropolymer coatings to reduce the coefficient of friction of the string surfaces and to reduce the internal friction of the string components among themselves.Type: GrantFiled: July 14, 2000Date of Patent: December 28, 2004Inventors: Stuart Karl Randa, James M Fitzgerald
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Patent number: 6833182Abstract: A composition suitable for sizing of glass fibers is disclosed. The composition contains water dispersible, water-soluble or water emulsifiable resin selected from the group consisting of polyepoxide, polyester, polyvinyl acetate, polyacrylate and polyurethane, water, an organofunctional silane, and a nucleating agent. Optional components include emulsifiers, lubricants, wetting and anti-static agents. Glass fibers sized with the composition are suitable for preparing composites having improved mechanical properties.Type: GrantFiled: December 6, 1999Date of Patent: December 21, 2004Assignees: Bayer Aktiengesellschaft, Bayer Antwerpen N.V.Inventors: Raymond Audenaert, Detlev Joachimi, Alexander Karbach, Stephan Kirchmeyer, Joachim Simon
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Patent number: 6833187Abstract: In accordance with the present invention, lyocell products can be made with unbleached pulps resulting in products with high amounts of hemicellulose and high amounts of lignin as compared to conventional lyocell products. The lyocell products of the present invention are advantageously less expensive to produce but retain the desirable strength of conventional lyocell products.Type: GrantFiled: April 16, 2003Date of Patent: December 21, 2004Assignee: Weyerhaeuser CompanyInventors: Mengkui Luo, Amar Neogi
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Patent number: 6824861Abstract: A composite-based rim and methods for manufacturing such a rim are provided. The rim includes multiple fiber-based, co-mingled layers, wherein the strength and/or stiffness of the layers increases from the innermost layer of the rim to the outermost layer of the rim, but where the radial stress and strain generated in the rim decreases from the innermost layer to the outermost layer. Incorporation of this rim into a high stress and strain usage environment, such as a flywheel system, allows the rim to be spun at high speeds in order to generate high levels of kinetic energy while beneficially managing the amount of strain and radial stresses generated within the rim, and, in turn, minimizing or at least controlling the formation and propagation of cracks within the rim.Type: GrantFiled: September 13, 2001Date of Patent: November 30, 2004Assignee: Beacon Power CorporationInventor: Ward R. Spears
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Patent number: 6814759Abstract: Stable cellulosic fiber material for use in forming zeolite/cellulose composites is prepared by suspending loose cellulose fibers in an aqueous solution of sodium hydroxide, potassium hydroxide or sodium silicate, stirring the resulting suspension until it reaches a macroscopically homogenous appearance, heating the resulting mixture at a temperature of 323-423 K until only dry solids remain, contacting the resulting mixture with excess distilled water to remove physically adsorbed or trapped sodium hydroxide, potassium hydroxide or sodium silicate from the fibers, and heating the resulting fiber material at 323-423 K to dry the fiber material. Stable zeolite/cellulose composite material characterized in that leaching of the zeolite phase does not occur upon contact of the composite with water at approximately 373 K comprises a zeolite and a stable cellulosic fiber prepared as described above, the composite material being formed by contacting a zeolite with the stable fiber material.Type: GrantFiled: August 6, 2002Date of Patent: November 9, 2004Assignees: Board of Regents of the University of Nebraska, Kraft Foods Inc.Inventors: Gustavo Larsen, David Vu, Manuel Marquez-Sanchez
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Patent number: 6800367Abstract: Fire retardant and heat resistant yarns, fabrics, and other fibrous blends incorporate one or more fire retardant and heat resistant strands comprising oxidized polyacrylonitrile and one or more strengthening filaments such as metallic filaments (e.g., stainless steel), high strength ceramic filaments, or high strength polymer filaments. Such yarns, fabrics, and other fibrous blends have a superior tensile strength, cut resistance, abrasion resistance, LOI, TPP and continuous operating temperature compared to conventional fire retardant fabrics. The yarns, fabrics, and other fibrous blends are also more soft, supple, breathable and moisture absorbent and are therefore more comfortable to wear, compared to conventional fire retardant fabrics. The inventive yarns may be woven, knitted or otherwise assembled into a desired fabric or other article of manufacture.Type: GrantFiled: April 25, 2002Date of Patent: October 5, 2004Assignee: Chapman Thermal Products, Inc.Inventors: William J. Hanyon, Michael R. Chapman
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Patent number: 6797113Abstract: The use of low specific gravity wood from thinning operations, for example, will produce a lower brownstock viscosity for a given kappa number target. A differential of 200-cP falling ball pulp viscosity has been detected from Kraft cooks of low and high specific gravity wood. Using low specific gravity wood can reduce the bleach stage temperature and the chemical dose needed in the bleach plant to produce lyocell pulp specifications. Low specific gravity wood also increases the ability to reduce pulp viscosity to very low levels without increasing the copper number of the pulp or the concentration of carbonyl in the pulp above acceptable levels.Type: GrantFiled: January 2, 2003Date of Patent: September 28, 2004Assignee: Weyerhaeuser CompanyInventors: James E. Sealey, II, W. Harvey Persinger, Jr., Kent Robarge, Mengkui Luo
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Patent number: 6787226Abstract: Chopped strands having a sizing agent impregnated on glass fiber strands, to be used for a molded product of unsaturated polyester resin BMC, wherein the sizing agent comprises a urethane resin, a vinyl acetate resin and a silane coupling agent, and wherein the mass ratio of the urethane resin to the vinyl acetate resin is from 30:70 to 70:30.Type: GrantFiled: October 22, 2002Date of Patent: September 7, 2004Assignees: Asahi Fiber Glass Company Limited, Koito Manufacturing Co., Ltd.Inventors: Yoshirou Niino, Hideki Endou, Manabu Iizuka, Hisayoshi Daicho, Hideki Tanaka, Yuji Yoshimoto
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Patent number: 6784237Abstract: A water- and oil-repellent, antistatic composition comprises (a) at least one nonpolymeric ionic salt consisting of (i) at least one cation selected from the group consisting of monovalent metal cations, divalent metal cations, and organic onium cations, and (ii) at least one weakly coordinating anion, the conjugate acid of the anion having an acidity greater than or equal to that of a hydrocarbon sulfonic acid, and with the proviso that the anion is organic or fluoroorganic when the cation is a metal; (b) at least one fluorochemical repellency-imparting additive or repellent; and (c) at least one insulating material. The composition exhibits good antistatic and repellency characteristics.Type: GrantFiled: June 11, 2003Date of Patent: August 31, 2004Assignee: 3M Innovative Properties CompanyInventors: Delton R. Thompson, Thomas P. Klun, William M. Lamanna
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Patent number: 6780922Abstract: An adhesion promoter comprises a polymeric strand with an epoxy-reactive group other than a phenolic hydroxyl group, and a crosslinking group that crosslinks the polymeric strand with a rubber in a crosslinking reaction, wherein the polymeric strand is water soluble in an amount of at least 10 g/l, and more preferably at least 100 g/l. Particularly contemplated adhesion promoters may further comprise styrene-butadiene-vinylpyridine copolymer, and may advantageously be employed as a replacement for resorcinol-formaldehyde latex in the fabrication of a rubber containing tire. Especially contemplated rubber compositions may additionally comprise maleinized polybutadiene to synergistically improve adhesion of the rubber to a polymeric fiber coupled via contemplated adhesion promoters.Type: GrantFiled: January 17, 2002Date of Patent: August 24, 2004Assignee: Honeywell International Inc.Inventors: Truc-Chi Huynh-Tran, Huy X. Nguyen
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Patent number: 6773793Abstract: An electrical insulating sheet is disclosed. The sheet includes 50-99% D glass flakes and 1-50% additives. Optional ingredients include a bonding agent, porosity control agent, and reinforcing agent(s) to enhance tensile strength.Type: GrantFiled: May 24, 2002Date of Patent: August 10, 2004Assignee: Electrolock, Inc.Inventors: Ronald T. Flynn, Darryl A. Payne, Ralph E. Brandon
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Patent number: 6773648Abstract: Cellulose containing dope is extruded through orifices and into a stream of gas moving in a direction generally parallel to the direction that the filaments are formed with varying degrees of mechanical attenuation provided to the filaments using a take-up device, such as a winder.Type: GrantFiled: April 10, 2002Date of Patent: August 10, 2004Assignee: Weyerhaeuser CompanyInventors: Mengkui Luo, Vincent A. Roscelli, Senen Camarena, Amar N. Neogi, John S. Selby