Patents Examined by Helen Lee
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Patent number: 5707633Abstract: Thermal protection material coating of an aggregate of mineral fibers, in particular carbon or silicon, is provided with at least one coat of a silicon-based material covering at least the area exposable to the flaking or crumbling sources of the thermal protection device. The coating is especially applicable to thermal protection structures.Type: GrantFiled: June 18, 1996Date of Patent: January 13, 1998Assignee: Societe Anonyme dite Aerospatiale Societe Nationale IndustrielleInventor: Jean-Louis Tisne
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Patent number: 5708089Abstract: Mixtures of fluoropolymers and oxidized polyarylene sulfidesA polymer mixture ofA) at least one fluoropolymer in a proportion of from 50 to 99% by weight andB) at least one polyarylene sulfone or polyarylene compound containing at least two of the bridges --S--, --SO-- and --SO.sub.2 -- or a mixture of the two in a proportion of from 1 to 50% by weight,where the sum of components A) and B) is always 100% by weight.This mixture is used for the production of sliding bearings or gasket materials having a reduced tendency to creep and reduced abrasion.Type: GrantFiled: March 22, 1996Date of Patent: January 13, 1998Assignee: Hoecht AGInventors: Helmut Scheckenbach, Andreas Schleicher, Jurgen Kulpe, Bernd Jansen
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Patent number: 5702826Abstract: The present invention relates to a composite structure comprising one or more plies of nonwoven and one or more plies of film, these being manufactured from thermoplastics, wherein all the plies making up the structure, for example (12, 13, 14), are totally manufactured from a member of the group: a polymer derived from lactic acid, a copolymer of lactic acid, a blend of polymers derived from lactic acid.The invention also relates to a process for obtaining said composite structure.Type: GrantFiled: October 12, 1995Date of Patent: December 30, 1997Assignee: Fiberweb FranceInventors: Philippe Ehret, Philippe Guipouy, Kimmo Lahtenkorva
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Patent number: 5700531Abstract: A pull-activated container adapted to hold a fluid, volatile solid, or absorbent for a fluid wherein at least a portion of the container includes a laminate which, in turn, includes a first layer, a second layer, a third layer, and a grasping means. The first layer is a fibrous sheet, the second layer is a film having a first side and a second side, and the third layer is a porous fibrous sheet. The third layer is inside the container. The first layer is bonded to the first side of the second layer and has a first bonding strength and the third layer is bonded to the second side of the second layer and has a second bonding strength. For example, the first bonding strength may be greater than the second bonding strength to an extent sufficient to permit selectively removing the first and second layers from the third layer without tearing the third layer. The grasping means is affixed to the first layer and has a third bonding strength which is greater than the second bonding strength.Type: GrantFiled: November 17, 1995Date of Patent: December 23, 1997Assignee: Kimberly-Clark Worldwide, Inc.Inventors: Gunilla Elsa Gillberg-LaForce, Kevin George Hetzler, Rob Lee Jacobs
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Patent number: 5700865Abstract: A flooring material comprises 30-70 parts by weight of a copolymer of ethylene and an .alpha.-olefin having 4-10 carbon atoms, preferably an ethylene/octene copolymer, 20-40 parts by weight of polypropylene, 5-20 parts by weight of a crosslinked ethylene polymer, preferably a copolymer of ethylene and an ethylenically unsaturated silane compound, 10-25 parts by weight of an organic filler, preferably polyethylene having a melt index below 0.1 g/10 min (190.degree. C./21.6 kg) and a phase stability in the flooring material of at least about 200.degree. C., 0.2-7 parts by weight of a flame retardant, preferably silicone and magnesium stearate, 0.1-2 parts by weight of an antistatic agent, and 0.1-1 part by weight of a stabiliser. The flooring material is free from inorganic fillers.Type: GrantFiled: March 22, 1996Date of Patent: December 23, 1997Assignee: Tarkett AGInventor: Eskil Lundquist
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Patent number: 5700398Abstract: A composition containing a polymeric matrix and a conductive filler component is provided. The conductive filler component comprises conductive particles and a polymer selected from the group consisting of substituted and unsubstituted polyanilines, substituted and unsubstituted polyparaphenylenevinylenes, substituted and unsubstituted polythiophenes, substituted and unsubstituted polyazines, substituted and unsubstituted polyparaphenylenes, substituted and unsubstituted polyfuranes, substituted and unsubstituted polypyrroles, substituted and unsubstituted polyselenophene, substituted and unsubstituted poly-p-phenylene sulfides and substiututed and unsubstituted polyacetylenes, and mixtures thereof, and copolymers thereof. Compositions of the present invention are useful as corrosion protecting layers for metal substrates, for electrostatic discharge protection, electromagnetic interference shielding, and as adhesives for interconnect technology as alternatives to solder interconnections.Type: GrantFiled: December 14, 1994Date of Patent: December 23, 1997Assignee: International Business Machines CorporationInventors: Marie Angelopoulos, Vlasta A. Brusic, Teresita Ordonez Graham, Sampath Purushothaman, Ravi F. Saraf, Jane Margaret Shaw, Judith Marie Roldan, Alfred Viehbeck
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Patent number: 5700558Abstract: One embodiment of the present invention provides for a biodegradable absorbent material for oil or other hydrocarbon liquid spills. The material consists of a mixture of granulated foam, microbial nutrient, de-dust agent and ground cellulosic material. This mixture is superior to other absorbent mixtures because it biodegrades faster than other mineral or organic adsorbents and is less expensive than synthetic adsorbents on the market today. The material is useful in field operations, plants and shop or even home use. Another embodiment of the present invention, provides for a system for absorbing hydrocarbon based liquids spilled on a surface using the absorbent material described.Type: GrantFiled: December 8, 1995Date of Patent: December 23, 1997Inventor: Alvin F. Bopp
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Patent number: 5700394Abstract: A method for the treatment of a textile fiber to reduce the amount of UV light passing through a fabric produced from said treated fiber comprising treating a textile fiber with 0.1 to 6.0% by weight on the fiber, of a UV absorber of the formula (1) ##STR1## wherein A is the radical of a UV absorber, B is the radical of a UV absorber or is a water-solubilizing group and X is F or Cl, and textile fabrics and articles of clothing produced from said fabrics. Fabrics prepared from the treated fibers are useful in making clothing which provides protection against UV radiation for skin which is covered by the clothing, especially lightweight summer clothing.Type: GrantFiled: January 13, 1995Date of Patent: December 23, 1997Assignee: Ciba Specialty Chemicals CorporationInventors: Jayanti V. Isharani, Willaim M. Hung, Kai C. Su
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Patent number: 5698325Abstract: Molded articles of an aromatic polymer are described having at least a portion of the surface layer of the polymer modified by a heterogeneous reaction of the solid polymer and a reactive solution. The polymer to be treated may contain different repeating units in the said surface layer. The treatment to produce the molded article may comprise casting, injection molding, extending or otherwise shaping the polymer to mold the polymer into a desired shape. The heterogeneous treatment to produce the heterogeneously modified molded article may comprise treating a surface layer of a flat cast sheet in the form of a flat membrane, spirally wound membrane, hollow fiber, or tubular material.Type: GrantFiled: January 23, 1996Date of Patent: December 16, 1997Assignee: National Research Council of CanadaInventors: Andre Y. Tremblay, Oleh Kotowy
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Patent number: 5698476Abstract: A system for removing extraneous, random free-flowing dyes from laundry washing applications which comprises a novel unitary dosing laundry article that can freely circulate among items being laundered. The laundry article further comprises a dye absorber and a dye transfer inhibitor which are introduced into a wash liquor via a support matrix. The dye absorber maintains a relational association with the support matrix in the wash liquor, whereas the dye transfer inhibitor is delivered up from the support matrix to the wash liquor and may be evenly distributed throughout the wash liquor. The laundry article of the present invention provides a method for preventing the redeposition of extraneous dyes onto other wash items, while simultaneously providing an indicator system for the manifestation of such scavenging process.Type: GrantFiled: March 1, 1995Date of Patent: December 16, 1997Assignee: The Clorox CompanyInventors: Kaj A. Johnson, Gregory Van Buskirk, Samuel M. Gillette
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Patent number: 5698298Abstract: A fibrous, non-woven thermal insulation comprises synthetic polymeric resin microfibers, staple fibers and bonding fibers which are randomly oriented and randomly intermingled in a single layer. The microfibers comprise between 0% and 95% by weight virgin synthetic polymeric resin and between 5% and 100% by weight recycled polyethylene teraphthalate. In one embodiment the microfibers have an average diameter between 1 to 10 microns and comprise between 5% and 80% by weight of the insulation; the staple fibers have an average diameter between 10 and 30 microns and comprise between 5% and 90% by weight of the insulation; and the bonding fibers have an average diameter between 0.9 and 15 denier and comprise between 5% and 95% by weight of the insulation. The bonding fibers have thermoplastic surfaces with a lower temperature softening point than the microfibers and staple fibers and bond the fibers together to form the insulation material.Type: GrantFiled: April 24, 1995Date of Patent: December 16, 1997Assignee: Schuller International, Inc.Inventors: Fred Lee Jackson, Kevin Patrick McHugh, John Stuart Robertson, Joseph Rumiesz, Jr.
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Patent number: 5695875Abstract: A particle board including wood particles having a maximum particle size of 3 mm and an average particle size of between 0.2 mm and 2.0 mm. The wood particles are combined with a glue, present in a concentration of 5% to 18% by weight, and 0.1% to 1% by weight of a sizing agent. The particle board components are subjected to a pressure of 15 to 50 kp/cm.sup.2 and a temperature of 120.degree. to 210.degree. C. to produce a particle board having a density of 600 to 1200 kg/m.sup.3 and a water absorption of 14% to 30% by weight, said swelling and absorption measured after 24 hours in water, a bending strength of 18 to 35 MPa and an internal bond strength of 1.2.Type: GrantFiled: March 20, 1995Date of Patent: December 9, 1997Assignee: Perstorp Flooring ABInventors: Roland Larsson, Peter Ringo
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Patent number: 5693379Abstract: A polyamic acid is herein disclosed which contains a structural unit represented by the formula ?2a! ##STR1## wherein m is an integer of 1 to 20; n is an integer of 1 to 2; and R.sup.2 is an alkyl group or an alkoxy group having 1 to 20 carbon atoms. Furthermore, a polyamic acid composition is also disclosed which comprises the polyamic acid containing the structural unit represented by the formula ?2a! and another polyamic acid containing a structural unit other than mentioned above. By heating the polyamic acid or the polyamic acid composition at a low temperature for a short time, a liquid crystal alignment film can be obtained therefore.Type: GrantFiled: October 20, 1995Date of Patent: December 2, 1997Assignee: Chisso CorporationInventors: Shigeru Sugimori, Takashi Katoh
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Patent number: 5688873Abstract: Electroconductive polymers having a chemical structure represented by, for example, the formula (I) ##STR1## wherein R.sup.1 and R.sup.2 independently represent H, a C.sub.1 to C.sub.20 alkyl or alkoxy group, an amino group, a trihalomethyl group or a phenyl group, X represents S, O, Se, Te or NR.sub.3 R.sub.3 represents H, a C.sub.1 to C.sub.6 alkyl group or an aryl group, M represents a cation such as H.sup.+, an alkali metal ion or a quaternary ammonium ion, and m is 0.2 to 2 and a process for producing the polymer.Type: GrantFiled: June 7, 1995Date of Patent: November 18, 1997Assignee: Showa Denko K.K.Inventors: Yoshihiro Saida, Yoshiaki Ikenoue, Reiko Ichikawa
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Patent number: 5688522Abstract: Wound healing compositions comprise from 1 to 20% by weight of a gel forming polysaccharide such as carboxymethyl cellulose and from 15 to 50% by weight of hexylene glycol. Such compositions are strongly antimicrobial, but show low toxicity to fibroblasts.Type: GrantFiled: August 13, 1996Date of Patent: November 18, 1997Assignee: Johnson & Johnson Medical, Inc.Inventor: Craig J. Hardy
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Patent number: 5688600Abstract: In accordance with the present invention there is provided a corrosion resistant surfacing veil of a thermoplastic fluoropolymer, and corrosion resistant reinforced thermoset plastic laminates having a surfacing veil of a thermoplastic fluoropolymer.Type: GrantFiled: June 26, 1996Date of Patent: November 18, 1997Assignee: Cobale Co., L.L.C.Inventor: Edward D. Bailey, Jr.
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Patent number: 5686181Abstract: There are here disclosed carbon fibers for reinforcement of cement which are obtained by applying, onto the surfaces of carbon fibers, esters of oleic acid and aliphatic monovalent alcohols, esters of oleyl alcohol and monovalent fatty acids, polyoxyalkylene bisphenol ethers or polyether esters as sizing agents, and a cement composite material having a bending strength of 300 kgf/cm.sup.2 or more which contains cut carbon fibers having a fiber length of 10 to 50 mm at a mixing volume ratio of the cut carbon fibers to the cement matrix in the range of 1 to 5%. According to the present invention, there are provided the carbon fibers for reinforcement of cement which have excellent adhesive properties to the cement, good process passage properties through a direct spray gun and good bundling properties and which are suitable for a direct spray method, and the cement composite material using the carbon fibers and having high bending strength.Type: GrantFiled: July 14, 1995Date of Patent: November 11, 1997Assignees: Petoca, Ltd., Takenaka CorporationInventors: Katsumi Takano, Yasushi Katsuta, Hideyuki Nakajima, Yoshikazu Nagata, Sadatoshi Ohno, Tadahiro Kakizawa, Toshio Yonezawa, Junichi Ida, Masaki Iwata
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Patent number: 5686539Abstract: The present invention relates to a resin composition comprising (A) polyphenylene ether, (B) polyarylene sulfide and (C) polyisocyanate, wherein the polyisocyanate is an organic compounds having the general formula: ##STR1## wherein n is an integer of 1 or more.Type: GrantFiled: November 15, 1991Date of Patent: November 11, 1997Assignee: Sumitomo Chemical Company, LimitedInventors: Kenji Nagaoka, Satoru Gotoh
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Patent number: 5686548Abstract: Polymers which form ultrathin, chemically adherent, anisotropic films on substrate surfaces impart useful properties to the surface. The polymers can be functionalized with any of a wide array of side chains and groups to impart properties and/or uses to the substrate.Type: GrantFiled: May 31, 1995Date of Patent: November 11, 1997Assignee: Research Corporation Technologies, Inc.Inventors: David W. Grainger, Fang Sun
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Patent number: 5686549Abstract: Polymers which form ultrathin, chemically adherent, anisotropic films on substrate surfaces impart useful properties to the surface. The polymers can be functionalized with any of a wide array of side chains and groups to impart properties and/or uses to the substrate.Type: GrantFiled: May 31, 1995Date of Patent: November 11, 1997Assignee: Research Corporation Technologies, Inc.Inventors: David W. Grainger, Fang Sun