Fibers Of Defined Composition Patents (Class 428/311.51)
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Publication number: 20090324925Abstract: This invention relates to a liquid penetration-resistant water-vapor-permeable multi-layer composite material and process for making the same comprising a porous nanofiber web of polymeric fibers, wherein the polymeric fibers of the nanofiber web have a diameter of less than 1000 nanometers and wherein the nanofiber web has a basis weight of 5 to 40 grams per square meter and a surface roughness (?RMS) of 5 to 15 micrometers and where, the porous nanofiber web is coated on a surface with a layer of water-vapor-permeable, hydrophilic, monolithic, water transport material.Type: ApplicationFiled: June 30, 2008Publication date: December 31, 2009Inventors: Jill A. Conley, George Bruce Palmer, IV
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Patent number: 7585557Abstract: The invention relates to a base comprising a closed cell foam core sheet having a closed cell foam layer with a density gradient between the center of the core and the surfaces of the core. The invention also relates to a method of making such a base by adding a first concentration of a first blowing agent to a first polymer to form a first mixture, adding a second concentration of a second blowing agent to a second polymer to form a second mixture, and extruding the mixtures to form the closed cell foam core sheet. The invention also relates to a method of making such a closed cell foam core sheet base comprising the steps of adding a blowing agent to a polymer to form a mixture, melting the mixture, extruding the mixture from a die, and rapidly quenching the mixture against a high heat transfer surface.Type: GrantFiled: February 17, 2004Date of Patent: September 8, 2009Assignee: Eastman Kodak CompanyInventors: Peter T. Aylward, Narasimharao Dontula, Terry A. Heath, Richard D. Bomba, John E. Benson
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Patent number: 7537823Abstract: A moisture absorbing hygroscopic fiber having high whiteness, characterized in that (1) acrylic fiber comprising acrylonitrile copolymer where a (meth)acrylate compound as a copolymer component is less than 5% by weight is treated with a hydrazine compound whereby introduction of crosslink and increase in nitrogen content to an extent of 1.0 about 10.0% by weight is carried out, (2) treatment with an aqueous solution of alkaline metal salt is carried out whereby carboxyl group of a metal salt type by which CN group is hydrolyzed is produced in an amount of 4.0 about 10.0 meq/g and (3) a reducing treatment by a reduction treatment agent selected from a group consisting of hydrosulfite, thiosulfate, sulfite, nitrite, thiourea dioxide, and ascorbate compound is carried out.Type: GrantFiled: November 2, 2001Date of Patent: May 26, 2009Assignee: Japan Exlan Company LimitedInventors: Shigeru Nakashima, Noriyuki Kohara, Masao Ieno
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Patent number: 7517580Abstract: Fibrous monolith composites having architectures that provide increased flaw insensitivity, improved hardness, wear resistance and damage tolerance and methods of manufacture thereof are provided for use in dynamic environments to mitigate impact damage and increase wear resistance.Type: GrantFiled: December 9, 2005Date of Patent: April 14, 2009Assignee: Advanced Ceramics Research, Inc.Inventors: Anthony C. Mulligan, Mark J. Rigali, Manish P. Sutaria, Dragan Popovich, Joseph P. Halloran, Michael L. Fulcher, Randy C. Cook
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Patent number: 7504346Abstract: Aerogel composite materials having a lofty fibrous batting reinforcement preferably in combination with one or both of individual short randomly oriented microfibers and conductive layers exhibit improved performance in one or all of flexibility, drape, durability, resistance to sintering, x-y thermal conductivity, x-y electrical conductivity, RFI-EMI attenuation, and/or burn-through resistance.Type: GrantFiled: May 18, 2006Date of Patent: March 17, 2009Assignee: Aspen Aerogels, Inc.Inventors: Christopher J. Stepanian, George L. Gould, Redouane Begag
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Publication number: 20090068553Abstract: A paper comprising a silicon-coated web of carbon nanofibers. The paper can be formulated such that it is useful as an energy storage material and/or a current collector. An asymmetric electrochemical capacitor containing the paper is also disclosed.Type: ApplicationFiled: September 8, 2008Publication date: March 12, 2009Applicant: INORGANIC SPECIALISTS, INC.Inventor: David W. Firsich
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Patent number: 7488401Abstract: This invention relates to a friction material and, more particularly, to a wet friction material capable of being manufactured using conventional paper-making processes. Long fibers are used to form a wet-laid homogeneous skeletal matrix, which is reinforced by dispersing particulate materials throughout the friction matrix and throughout the matrix binder, specifically at the interstices of adjacent fibers, to significantly increase the shear strength of the material while having a near negligible effect on fluid flow through the material.Type: GrantFiled: July 11, 2005Date of Patent: February 10, 2009Assignee: Sulzer Friction Systems (US) Inc.Inventors: James Martin Lee, Eric Arthur Schueler, Matthew Joseph Trippel
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Publication number: 20080318024Abstract: A porous nonwoven web and method of making are disclosed, wherein the web contains meltblown fibers and staple fibers. The meltblown fibers may be present as a bimodal mixture of microfibers and mesofibers, and comprise an intermingled mixture with staple fibers further intermingled therein.Type: ApplicationFiled: June 22, 2007Publication date: December 25, 2008Inventors: Seyed A. Angadjivand, John M. Brandner, James E. Springett
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Patent number: 7429418Abstract: A friction material which includes a porous base material, at least one type of resin material, and at least one type of nanoparticle-sized friction modifying particle, is disclosed. The resin material and the nanoparticle-sized friction modifying particles are substantially uniformly dispensed throughout the base material.Type: GrantFiled: July 26, 2004Date of Patent: September 30, 2008Assignee: BorgWarner, Inc.Inventors: Robert C. Lam, Yih-Fang Chen, Kenji Maruo
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Patent number: 7413999Abstract: A corner fitting and a method of forming a corner fitting including steps of providing a flat woven fabric including a first woven portion having first and second direction woven fibers, a second woven portion adjacent the first woven portion having first direction fibers and sacrificial second direction fibers and a third semi-woven portion having first direction fibers selectively engaged by the sacrificial second direction yarns. The method further comprising steps of folding the flat woven fabric in at least one direction, and removing the sacrificial second direction fibers, wherein during removal, the sacrificial second direction fibers are replaced in the second woven portion by the first direction fibers of the third semi-woven portion and form a corner fitting having continuous fibers connecting all sides.Type: GrantFiled: November 3, 2005Date of Patent: August 19, 2008Assignee: Albany Engineered Composites, Inc.Inventor: Jonathan Goering
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Patent number: 7319078Abstract: A novel porous fibrous structure containing from 10 to 100% by weight of wet heat bonding fibers, having cellular cavities in the fibrous structure of the fibers, in which a plurality of indefinite cellular cavities are present independently or in a state of partially connected in the inside of the fibrous structure, at least a portion of the fibers constituting the fibrous structure is heat bonding by the wet heat bonding fibers, and a process for producing such porous fibrous structure.Type: GrantFiled: October 11, 2002Date of Patent: January 15, 2008Assignee: Kuraray Co., Ltd.Inventors: Tosirou Yamaguchi, Hisaharu Kuwahara, Hirokuni Tanii
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Publication number: 20070287001Abstract: An airborne sound-absorbing engine compartment lining for motor vehicles comprises an open-cell, air-permeable foam material layer made from plastic and having a front side and a rear side. The foam material layer is provided on its rear side with a fiber layer made from mineral fibers, the foam material layer having a thickness of less than 6 mm and a specific flow resistivity in the range from about 100 to 1,200 Ns/m3. The fiber layer has a thickness of more than 6 mm and a mass per unit area of less than 800 g/m2.Type: ApplicationFiled: January 16, 2007Publication date: December 13, 2007Applicant: Carcoustics Tech Center GmbHInventors: Larry Carlson, Gordon Ebbitt
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Publication number: 20070224409Abstract: A flexible, durable, multiple use article, such as a wipe. The wipe has two layers, one layer being an open cell melamine-based foam and the second being carrier layer for the melamine-based foam layer, providing flexural strength to the foam. The carrier layer could be a foam or other material. The wipe may be one of a plurality of wipes, provided in a package.Type: ApplicationFiled: March 24, 2006Publication date: September 27, 2007Inventors: James R. DOVORANY, Stanley F. Alexander
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Patent number: 7258914Abstract: The object of the present invention is to provide a porous membrane having a high strength and excellent water permeability and rejection properties. The porous membrane of the present invention has both a three-dimensional network structure and a spherical structure. The porous membrane of the present invention is suitably used for water treatment membranes, battery separators, charged membranes, fuel cells, blood purification membranes, and the like.Type: GrantFiled: May 30, 2003Date of Patent: August 21, 2007Assignee: Toray Industries, Inc.Inventors: Hirofumi Morikawa, Shin-ichi Minegishi, Shuji Furuno, Toshyuki Ishizaki, Masahiro Henmi
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Patent number: 7169465Abstract: A low CTE metal-ceramic composite material featuring carbon fibers reinforcing a matrix featuring silicon metal or silicon alloy. The fibers have a low coefficient of thermal expansion (CTE) in the axial direction, and preferably negative. The principles of making Si/SiC composites can be adapted to produce the instant Si matrix composites. The CTE of the composite body depends not only upon the relative CTE's of the fibers and matrix, and their relative amounts (e.g., loadings), but also upon the relative elastic moduli of the fibers and matrix. Thus, Si/SiC matrices produced by a reaction-bonding process inherently possess low CTE, but the instant inventors prefer to make such composites having relatively large fractions of unreacted silicon, thereby driving composite CTE lower still. Here, the carbon fibers are protected from reaction with the silicon infiltrant with one or more materials disposed between the fibers and the infiltrant.Type: GrantFiled: February 11, 2002Date of Patent: January 30, 2007Inventors: Prashant G. Karandikar, Jai R. Singh, Clarence A. Andersson
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Patent number: 7141519Abstract: The present invention is directed to ion triggerable, water-dispersible cationic polymers. The present invention is also directed to a method of making ion triggerable, water-dispersible cationic polymers and their applicability as binder compositions. The present invention is further directed to fiber-containing fabrics and webs comprising ion triggerable, water-dispersible binder compositions and their applicability in water-dispersible personal care products, such as wet wipes.Type: GrantFiled: September 20, 2002Date of Patent: November 28, 2006Assignee: Kimberly-Clark Worldwide, Inc.Inventors: W. Clayton Bunyard, Kelly D. Branham, Michael R. Lostocco, Glenn Calhoun, Rod Weston, Frederick J. Lang, Kevin Possell
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Patent number: 7140496Abstract: A multilayer microporous membrane containing a thermoplastic resin, comprising a coarse structure layer with a higher open pore ratio and a fine structure layer with a lower open pore ratio, wherein said coarse structure layer is present at least in one membrane surface having a thickness of not less than 5.0 ?m, a thickness of said fine structure layer is not less than 50% of the whole membrane thickness, and said coarse structure layer and said fine structure layer are formed in one-piece.Type: GrantFiled: July 31, 2002Date of Patent: November 28, 2006Assignee: Asahi Kasei Medical Co., Ltd.Inventors: Fujiharu Nagoya, Ichiro Koguma
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Patent number: 7132156Abstract: A preform for the composite material and an aluminum composite material which can form a composite material has excellent abrasion resistant property and high strength and a manufacturing method of the same are disclosed. A pre-mixture 9 comprising aluminum borate whisker 3 and potassium titanate whisker 4 in the range of 5% to 20% by volume was sintered at certain temperature. The titanium oxide 11 produced by the whisker reaction was bound to the surface of aluminum borate whisker 3, and the preform having high strength was obtained accordingly. Aluminum composite material 10 having excellent abrasion resistant property and high strength was obtained by impregnating aluminum alloy 6 to preform 1 for composite material.Type: GrantFiled: April 28, 2005Date of Patent: November 7, 2006Assignee: Central Motor Wheel Co., Ltd.Inventor: Makoto Fujita
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Patent number: 7070854Abstract: The present invention is directed to triggerable, water-dispersible cationic polymers. The present invention is also directed to a method of making triggerable, water-dispersible cationic polymers and their applicability as binder compositions. The present invention is further directed to fiber-containing fabrics and webs comprising triggerable, water-dispersible binder compositions and their applicability in water-dispersible personal care products, such as wet wipes.Type: GrantFiled: March 22, 2001Date of Patent: July 4, 2006Assignee: Kimberly-Clark Worldwide, Inc.Inventors: Yihua Chang, Frederick J. Lang, Kelly D. Branham, Erin McBride
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Patent number: 7063886Abstract: Thermostructural composite structure having a compositional gradient, formed from a porous core (5) made of a refractory having a pore volume content of greater than or equal to 80%. The core (5) lies between two intermediate layers (6a, 6b) comprising the carbon fiber reinforcement, densified by a matrix composed of the carbon phase and of a ceramic phase, and a refractory solid filler. Two monolithic ceramic shells (7a, 7b) cover the intermediate layers in order to give stiffness to the entire structure.Type: GrantFiled: December 4, 2003Date of Patent: June 20, 2006Assignee: Snecma Propulsion SolideInventors: Jacques Thebault, Laurent David
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Patent number: 7045207Abstract: Friction bodies made of a fiber-reinforced porous carbon material in which the reinforcing fibers are present in the form of woven fabrics, short fibers and/or long fibers and whose pores are filled with metals, wherein carbides of the metals filling the pores are present in the material in a mass fraction of not more than 10%, a process for their production and the use thereof in brake and clutch systems.Type: GrantFiled: May 26, 2004Date of Patent: May 16, 2006Assignee: SGL Carbon AGInventors: Ronald Hüner, Xaver Rothmair
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Patent number: 6974624Abstract: Fibrous monolith composites having architectures that provide increased flaw insensitivity, improved hardness, wear resistance and damage tolerance and methods of manufacture thereof are provided for use in dynamic environments to mitigate impact damage and increase wear resistance.Type: GrantFiled: December 4, 2002Date of Patent: December 13, 2005Assignee: Advanced Ceramics Research, Inc.Inventors: Anthony C. Mulligan, Mark J. Rigali, Manish P. Sutaria, Dragan Popovich, Joseph P. Halloran, Michael L. Fulcher, Randy C. Cook
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Patent number: 6902798Abstract: A flexible seal for use in a solid oxide fuel cell stack is formed from a fiber matrix impregnated with a plurality of solid particles. The fibers and particles are preferably ceramic and may be formed from alumina or zirconia. The seal may be formed by dipping the fiber matrix into a slurry of the particles in an alcohol, drying the seal and precompressing prior to installation in the fuel cell stack.Type: GrantFiled: August 17, 2001Date of Patent: June 7, 2005Assignee: Fuelcell Energy, Ltd.Inventors: Debabrata Ghosh, Scott Thompson
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Patent number: 6875711Abstract: A friction material has a first layer of a base material and a second layer of at least one type of friction modifying particle having substantially symmetrical geometric shapes on a top surface of the base material. The second layer has an average thickness of about 30 to about 200 microns and the surface area coverage of about 80 to about 100% such that the top layer has a fluid permeability lower than the first layer.Type: GrantFiled: September 4, 2002Date of Patent: April 5, 2005Assignee: BorgWarner Inc.Inventors: Yih-Fang Chen, Robert C. Lam, Feng Dong, Bulent Chavdar
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Patent number: 6863971Abstract: The present invention concerns treated fibrous porous material having a defined nanostructure comprising reactive sites thereon, wherein said fibrous porous material is treated with a low viscosity organic solution comprising organic solvent, isocyanate component unsaturated resin and optionally additional additives. The treated fibrous porous material is further mixed with a resin to form a composite. The composite may be formed by various methods of mixing and molding. The invention is further directed to various composites made therefrom. The fibrous porous material is selected from the group comprising cellulose, lignin, synthetic ceramics, porous metal nanopowders, kaolin, bio fibers and porous powders of biological origin or their mixtures. The resin may be any polymer virgin or scrap obtained from industrial or domestic waste, and is selected from thermoplastic or thermosetting polymers.Type: GrantFiled: March 21, 2002Date of Patent: March 8, 2005Assignee: Cycletec Ltd.Inventors: Izhar Halahmi, Mike Gross, Ian Leonard Jacobs, Gaby Kadosh
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Publication number: 20040258903Abstract: An antiperspirant containing underarm pad delivers antiperspirant to an underarm area and absorbs perspiration. The pad has at least one absorbent top layer, an antiperspirant active ingredient on or in the top layer, and an attachment mechanism, preferably an adhesive on the bottom. It is conveniently adhered to the inside underarm area of an upper torso garment, such as a shirt, blouse or tee shirt.Type: ApplicationFiled: June 19, 2003Publication date: December 23, 2004Inventor: Glen B. Eberle
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Patent number: 6828014Abstract: The present invention is directed to triggerable, water-dispersible cationic polymers. The present invention is also directed to a method of making triggerable, water-dispersible cationic polymers and their applicability as binder compositions. The present invention is further directed to fiber-containing fabrics and webs comprising triggerable, water-dispersible binder compositions and their applicability in water-dispersible personal care products, such as wet wipes.Type: GrantFiled: March 22, 2001Date of Patent: December 7, 2004Assignee: Kimberly-Clark Worldwide, Inc.Inventors: Kelly D. Branham, Yihua Chang, Frederick J. Lang, Erin McBride, Clay Bunyard
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Patent number: 6811863Abstract: In a printing press and attached onto the transfer cylinders, an anti-marking system that uniformly supports the transport and the release of the wet printed sheet from one station to the next. The anti-marking sheet consists of a two plus layer system, the outer layer being a textured surface and the inner layer being a microcellular material that is both compressible and resilient. The outer textured layer may be treated with either conductive/anti-static layers or an ink repellent layer or both. The two plus layer system is easily attached to both transfer cylinders and tracking/skeleton wheels using any combination of fixtures from Velcro™, magnetic, metallic, and pressure sensitive double sided tape to elastic loops.Type: GrantFiled: July 18, 2002Date of Patent: November 2, 2004Assignee: Brite Ideas, Inc.Inventors: Daniel J. Rizika, Gary Litman, Joseph Llanes
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Publication number: 20040202854Abstract: An anti-slip mat includes three layers, a top and a bottom layer of an expanded, closed cell elastomer and a center layer of a strong, non-stretching and waterproof fabric. The mat layers are held in place, one on top of another, by a fabric binding extending around the perimeter of the map and secured by stitching.Type: ApplicationFiled: April 9, 2003Publication date: October 14, 2004Inventor: John J. Esparza
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Publication number: 20040197546Abstract: A method of forming optically transparent and electrically conductive SWNT films includes the steps of providing a porous membrane and dispersing a plurality of SWNTs into a solution, the solution including at least one surface stabilizing agent for preventing the SWNTs from flocculating out of suspension. The solution is then applied to the membrane. The solution is then removed, wherein the SWNTs are forced onto the surface of the porous membrane to form a SWNT film on the membrane. The method can include the step of separating the SWNT film from the porous membrane, such as by dissolving the membrane. An electrically conducting and optically transparent single wall carbon nanotube (SWNT) film provides a sheet resistance of less than 200 ohm/sq and at least 30% transmission at a wavelength of 3 &mgr;m.Type: ApplicationFiled: July 18, 2003Publication date: October 7, 2004Applicant: University of FloridaInventors: Andrew G. Rinzler, Zhihong Chen
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Patent number: 6780497Abstract: Improved processes for surface treating expanded polytetrafluoroethylene (PTFE) is disclosed and improved surface-treated devices made from the processes. The processes employ a laser to surface-modify an expanded PTFE structure to create a macro-roughened surface that has the capability to remain microporous throughout. The unique process of the present invention creates a ridge and valley structure on the surfaces of devices that includes unique gnarled nodes along valley floors.Type: GrantFiled: August 5, 1999Date of Patent: August 24, 2004Assignee: Gore Enterprise Holdings, Inc.Inventor: James Todd Walter
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Publication number: 20040121138Abstract: A composite material has a foam core having first and second faces. A plurality of fibrous pins have first end portions protruding from the core first face. A first face sheet is secured to the core first face. The first face sheet comprises, in major part, one or more non-woven, non random, fiber layers. The pin first end portions protrude into the first face sheet.Type: ApplicationFiled: December 20, 2002Publication date: June 24, 2004Inventor: Thomas A. Carstensen
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Patent number: 6753061Abstract: A flexible sandwich panel (100), comprised of a center layer (1) and one or two outer layers (2; 3), where the center layer is made of a polymeric synthetic material, is itself flexible and exhibits a coarse-cell honeycomb structure with open cells (4) in the direction of the upper and lower side of the center layer. The outer layer or layers consist of a hardened mortar that is made flexible with synthetic additives, and that have as their core a web material consisting essentially of fibers, where the exterior side (5) of the hardened outer layer is left unrefined or roughcast in a plaster-like manner. The sandwich panel can be bent without flaking of the outer layers.Type: GrantFiled: March 21, 2003Date of Patent: June 22, 2004Inventor: Stephan Wedi
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Publication number: 20040086702Abstract: Improvements in preventing heat- and moisture-shrink problems in specific polypropylene tape fibers are provided. Such tape fibers are basically manufactured through the initial production of polypropylene films or tubes which are then slit into very thin, though flat (and having very high cross sectional aspect ratios) tape fibers thereafter. These inventive tape fibers (and thus the initial films and/or tubes) require the presence of relatively high amounts of certain compounds that quickly and effectively provide rigidity to the target polypropylene tape fiber. Generally, these compounds include any structure that nucleates polymer crystals within the target polypropylene after exposure to sufficient heat to melt the initial pelletized polymer and allowing such an oriented polymer to cool. The compounds must nucleate polymer crystals at a higher temperature than the target polypropylene without the nucleating agent during cooling.Type: ApplicationFiled: November 2, 2002Publication date: May 6, 2004Inventors: Brian G. Morin, Martin E. Cowan, Jack A. Smith
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Publication number: 20040062912Abstract: A fire blocking non-woven needlepunched textile structure, comprising a first fiber component containing polyacrylonitrile copolymer with a halogen containing monomer and a second fiber component. The second fiber component is selected such that it supports the first fiber component during burning, optionally including an inorganic filler as a coating for the first and second fiber components. In alternative embodiment, the present invention provides a fire blocking non-woven textile structure containing the above first and second fiber components, blended with a third binder fiber component in the form of a vertically lapped nonwoven structure.Type: ApplicationFiled: October 1, 2002Publication date: April 1, 2004Inventors: Charles R. Mason, Kate Hale-Blackstone
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Patent number: 6709737Abstract: Fibrous monolith composites having architectures that provide increased flaw insensitivity, improved hardness, wear resistance and damage tolerance and methods of manufacture thereof are provided for use in dynamic environments to mitigate impact damage and increase wear resistance.Type: GrantFiled: December 4, 2001Date of Patent: March 23, 2004Assignee: Advanced Ceramics Research, Inc.Inventors: Mark J. Rigali, Manish P. Sutaria, Anthony C. Mulligan, Dragan Popovich
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Publication number: 20040053035Abstract: A process for preparing a fiber reinforced polymeric foam composite includes introducing a foamable mixture into a low binder expandable fiber mat and then expanding the foamable mixture into a polymeric foam between top and bottom facing sheets such that the fibers of the low binder fiber mat become dispersed within the polymeric foam, wherein the low binder fiber mat is part of a composite web that further comprises a support web. Such a composite web is particularly useful for preparing reinforced polymeric foam composites that contain a fiber reinforced polymeric foam having a thickness of greater than two inches (5.08 centimeters) and fibers substantially distributed therein.Type: ApplicationFiled: July 9, 2003Publication date: March 18, 2004Inventor: James Lynn Haas
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Patent number: 6699604Abstract: A turbomachine component includes a silicon nitride substrate and a protective coating on the substrate. The protective coating includes a porous silicon nitride matrix and a noble metal infiltrated in the porous silicon nitride matrix.Type: GrantFiled: June 20, 2000Date of Patent: March 2, 2004Assignee: Honeywell International Inc.Inventors: Chien-Wei Li, Alexander S. Kozlov
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Patent number: 6656974Abstract: An absorbent foam material which comprises a solid, cross-linked form of an anionic polymer (e.g. an alginate) and fibers or other cation contributing polymeric particulates which have donated appropriate cations for effecting cross-linking of the anionic polymer. Methods of producing the foam material are also disclosed.Type: GrantFiled: September 21, 2000Date of Patent: December 2, 2003Assignee: Advanced Medical Solutions LimitedInventors: Donald W. Renn, Yimin Qin, Chiara Rossetto
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Publication number: 20030203183Abstract: A layered sheet construction contains at least one gas permeable, liquid water impermeable layer, and a gas delivery layer formed of a corrugated sheet proximate the gas permeable, water impermeable layer. The corrugated sheet has corrugations that form flow channels through which gas can be conveyed to the gas permeable layer. One embodiment of the layered sheet construction includes a gas permeable, liquid water impermeable layer having a surface energy that is below 20 dynes per centimeter.Type: ApplicationFiled: May 14, 2003Publication date: October 30, 2003Applicant: 3M Innovative Properties CompanyInventors: Jonathan F. Hester, Brian E. Spiewak, James S. Mrozinski, James M. Nelson
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Patent number: 6613703Abstract: A cyclodextrin-modified thermoplastic porous layer material is prepared by coating the surface of a fibrous nonwoven web, open-celled foam, porous film or the like with a chemical composition including a cyclodextrin compound, and then irradiating the coated fabric to induce a chemical reaction between the cyclodextrin compound and the underlying layer material. The resulting cyclodextrin-modified layer material has durable hydrophilic properties useful in topsheets for absorbent articles, and entrapment capabilities useful in water filters, blood filters, controlled delivery articles and protective garments.Type: GrantFiled: April 27, 2000Date of Patent: September 2, 2003Assignee: Kimberly-Clark Worldwide, Inc.Inventors: Ali Yahiaoui, Tami Lynette O'Connell, David Lewis Myers, Charles Edward Bolian, II
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Patent number: 6613203Abstract: An integral composite membrane comprised of an expanded polytetrafluoroethylene having a morphological structure comprising a microstructure of very highly elongated nodes interconnected by fibrils is imbibed with ionomer. This composite membrane shows a surprising increase in hardness and thereby reduces electrical shorting and improves fuel cell performance and durabiity.Type: GrantFiled: September 10, 2001Date of Patent: September 2, 2003Assignee: Gore Enterprise HoldingsInventors: Alex R. Hobson, Stephen J. MacKenzie
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Publication number: 20030162007Abstract: A graded composite energy converting article having a working surface of carbon-bonded carbon-fiber (CBCF) material that can absorb light, RF, microwaves, or other forms of energy and convert this energy to sensible heat. Conversely, CBCF can take sensible heat and convert it to radiative emissions of IR energy. Energy is conducted through the article by carbon foam to a secondary surface. The graded composite is made by first heating pitch under pressure to create the foam, which is then pyrolyzed and graphitized to create graphitic, open-cell foam. A slurry of chopped carbon fibers and organic binder in water or solvent is prepared and deposited on a working surface of the foam, preferably infiltrating the foam to some depth. The green body is dried, cured, and carbonized, creating a graded body of carbon foam in conductive thermal contact with a working surface of CBCF. Secondary surfaces of the foam may optionally be metal-infiltrated for added strength, brazability, or other purposes.Type: ApplicationFiled: February 25, 2002Publication date: August 28, 2003Inventors: James W. Klett, Robert J. Lauf, Michael A. Acree
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Patent number: 6602567Abstract: A carbon tube containing a carbonized tube wall. The tube wall is consisted of carbonized coating material and trace of fiber residue, and the carbonized coating material is prepared according to a process including the steps of: (a) coating a fiber structure with a carbon-containing coating material to form a coating layer over the fiber structure; (b) removing the fiber structure; and (c) carbonizing the coating layer to form the carbonized tube wall. The fiber structure can be either a two-dimensional or three-dimensional object, and a two-dimensional or three-dimensional device can be prepared accordingly.Type: GrantFiled: November 2, 2001Date of Patent: August 5, 2003Inventor: Chien-Chung Han
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Patent number: 6554881Abstract: A filter media having a synthetic microfiber polymer fine fiber web wherein the diameter of the fibers is between about 0.8 to about 1.5 microns. The filter media is acceptable for use in ASHRAE applications. Constructions with a low DP backing, support or prefilter layers of coarse fiber provide large area filter webs of high efficiency and a stale and high threshold value of alpha above eleven.Type: GrantFiled: October 27, 2000Date of Patent: April 29, 2003Assignee: Hollingsworth & Vose CompanyInventor: David Thomas Healey
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Patent number: 6528153Abstract: The present invention relates to porous materials, typically xerogels or aerogels, having a low dielectric constant but relatively poor mechanical strength. The present invention relates to polymeric coatings, preferably parylene, coated on inorganic xerogels or aerogels so as to increase the mechanical strength while not substantially degrading the dielectric properties of the resulting coated material. Silica xerogel conformally coated with parylene AF-4 is described.Type: GrantFiled: September 30, 1999Date of Patent: March 4, 2003Assignee: Novellus Systems, Inc.Inventors: Jeffrey C. Benzing, John Kelly
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Publication number: 20020164474Abstract: An apparatus and method for metabolic cooling and insulation of a user in a cold environment. In its preferred embodiment the apparatus is a highly flexible composite material having a flexible matrix containing a phase change thermal storage material. The apparatus can be made to heat or cool the body or to act as a thermal buffer to protect the wearer from changing environmental conditions. The apparatus may also include an external thermal insulation layer and/or an internal thermal control layer to regulate the rate of heat exchange between the composite and the skin of the wearer.Type: ApplicationFiled: November 20, 2001Publication date: November 7, 2002Inventor: Theresa M. Buckley
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Publication number: 20020164473Abstract: An apparatus and method for metabolic cooling and insulation of a user in a cold environment. In its preferred embodiment the apparatus is a highly flexible composite material having a flexible matrix containing a phase change thermal storage material. The apparatus can be made to heat or cool the body or to act as a thermal buffer to protect the wearer from changing environmental conditions. The apparatus may also include an external thermal insulation layer and/or an internal thermal control layer to regulate the rate of heat exchange between the composite and the skin of the wearer.Type: ApplicationFiled: November 20, 2001Publication date: November 7, 2002Inventor: Theresa M. Buckley
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Patent number: 6468645Abstract: A molded fiber product is made from plant fibers containing lignin. Plant fibers ranging in size below 0.5 mm are used. Binding agents and other additives may be mixed with the fibers to enhance product or process performance. The plant fiber mixture of fibers and additives are heated at temperatures between 40 degrees C. and 300 degrees C. The heated fibers are compressed in a mold to an average density of at least 960 kg/m3. Compression pressures of at least 3.4 MPa are used. The compressed fiber product is released from the mold and the mold may be reused. A thermoset molded plant fiber product is provided having characteristics and qualities similar to engineering grade thermoplastics and thermoset plastics.Type: GrantFiled: September 5, 2000Date of Patent: October 22, 2002Inventor: Robert N. Clausi
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Patent number: 6455145Abstract: This invention intends to provide a friction member which is high in an anti-fading character and low in mate attacking character. For such purpose, in a friction member composed of a fiber containing substrate, a bonding agent and a filling agent, an accumulated blow hole rate of blow holes having hole diameter not less than 3.5 &mgr;m is selected to be not larger than 2 volume %, and an accumulated blow hole rate of blow holes having hole diameter from 0 to 3.5 &mgr;m is selected to be not less than 3 volume %.Type: GrantFiled: March 12, 1999Date of Patent: September 24, 2002Assignees: Aisin Kako Kabushiki Kaisha, Aisin Seiki Kabushiki KaishaInventors: Masahito Mizuno, Osamu Shimase, Katsumi Uemura, Satoshi Narazaki