Glass Particles Or Spheres Patents (Class 428/406)
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Patent number: 7341780Abstract: The invention relates to a coating element, a coated fibrous web, and methods for manufacturing the same. The invention also relates to a particle granule. The coating element comprises a pigment binder structure granule formed from pigment particles and a binding agent and, possibly, additives, the pigment particles being bound to one another through a binding agent. According to the invention, the shape of the granule is essentially rotationally symmetrical, comprising an inner part and a crust part, the density of the inner part being lower than the crust part. The granules can be prepared by spray drying from aqueous slurry that contains a pigment, binder, and possible additives. The shape of the coating elements can be altered by using controlled deformation. They can be flattened, for example, by calendering to form the surface of a desired shape, and attached to the surface of the fibrous web without a separate binder or by adding a small amount of binder only.Type: GrantFiled: February 23, 2005Date of Patent: March 11, 2008Assignee: Timson OyInventor: Lars Gronroos
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Patent number: 7338710Abstract: Resin particles comprised of an acrylic resin. Not only is the maximum compression deformation ratio thereof as great as 60% or more but also the load required for 60% compression deformation is as small as 60 mN or less. Wiring boards are therefore coupled in using an anisotropic conductive adhesive obtained by first manufacturing conductive particles having a conductive coating formed on a resin particle surface of the resin particles by adhering a conductive material to the surface of the above resin particles as a core. On dispersing the conductive particles in an adhesive material, the conductive particles sandwiched between metallic wires of the wiring boards are greatly deformed by a small load, so that the electrical devices having a high conduction reliability can be obtained.Type: GrantFiled: June 6, 2003Date of Patent: March 4, 2008Assignee: Sony Chemicals & Information Device CorporationInventors: Kazunobu Kamiya, Ryoji Kojima
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Publication number: 20080038559Abstract: An encoded microparticle carrying a code is provided; and a set of encoded microparticles are provided with distinguishable codes, wherein the codes comply with a pre-determined coding scheme.Type: ApplicationFiled: September 13, 2006Publication date: February 14, 2008Inventor: Randall True
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Patent number: 7303818Abstract: An electrophoretic display device includes an electrophoretic dispersion liquid in which electrophotographic particles are dispersed. Each of the electrophotographic particles has a surface salt structure consisting of an acid-derived anionic group and any one of cationic compounds including a specific imidazolium compound, a specific pyridinium compound, a specific quaternary ammonium compound, and a specific trialkylamine-derived compound.Type: GrantFiled: April 7, 2005Date of Patent: December 4, 2007Assignee: Canon Kabusihi KaishaInventor: Masato Minami
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Patent number: 7300893Abstract: Protection against blast and ballistic damage is improved by encapsulating or sandwiching rigid inclusions (for example, tiles) or a rigid plate by a high-strain rate hardening elastomer. Typical high-strain rate hardening elastomers include polyurea and polyurethane. If desired, the inclusion or plate may be wrapped in a cloth and/or fabric before encapsulation/sandwiching. The armor may be used independently of a substrate or may be attached by any means to a substrate that it is intended to protect.Type: GrantFiled: June 10, 2004Date of Patent: November 27, 2007Assignee: The United States of America as represented by the Secretary of the NavyInventors: Roshdy George S. Barsoum, Dudt Philip
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Patent number: 7297403Abstract: A multilayer ceramic capacitor comprising a capacitor element body: wherein dielectric layers composed of a dielectric ceramic composition and internal electrode layers are alternately stacked; the dielectric ceramic composition comprises a plurality of dielectric particles each having a shell, wherein subcomponents are dispersed in a main component, formed around a core substantially composed of the main component; and a difference of the maximum thickness and the minimum thickness of the shell in the dielectric particles having an average particle diameter is controlled to be 6 to 60% of a radius of the dielectric particles; wherein a high permittivity and preferable temperature characteristic are obtained and TC bias characteristics are improved, is provided.Type: GrantFiled: October 12, 2005Date of Patent: November 20, 2007Assignee: TDK CorporationInventors: Kazushige Ito, Akira Sato
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Patent number: 7285508Abstract: The present invention provides a glass flake that is substantially free of boron trioxide (B2O3), barium oxide (BaO), zinc oxide (ZnO), and fluorine (F) and has sufficient heat resistance and good formability for glass flake. The glass flake of the present invention includes a glass composition that contains the following components, expressed in mol %; 50?SiO2?65; 4?Al2O3<12; 5?SrO?25; 10<(MgO+SrO)?30; 20?(MgO+CaO+SrO)?45; and 0<(Li2O+Na2O+K2O)<2; wherein the glass composition is substantially free of B2O3, BaO, ZnO, and F. This glass flake is useful for resin compositions, paints, cosmetics, ink compositions, and the like.Type: GrantFiled: April 30, 2004Date of Patent: October 23, 2007Assignee: Nippon Sheet Glass Company, LimitedInventors: Kosuke Fujiwara, Akihiro Koyama
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Patent number: 7282260Abstract: A coating composition having outstanding electrically conductive and electromagnetic radiation absorptive properties is disclosed with a water emulsion polymer binder. The binder is a blend of a first emulsion containing a conjugated diene as monomer or comonomer, and a second emulsion containing an acrylic, aliphatic or aromatic polyurethane, polyester urethane, polyester, epoxy, polyamide, polyimide, vinyl, fluoropolymer, or silicone polymer. An effective amount of electrically conductive and electromagnetic radiation absorptive particles is dispersed in the binder. The particles include a combination of graphite particles, carbon nanotubes and metal containing particles. An effective amount of water is also present.Type: GrantFiled: February 5, 2003Date of Patent: October 16, 2007Assignee: Unitech, LLCInventors: Wayne B. LeGrande, Robert C. Boyd
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Patent number: 7282263Abstract: A method of coloring a cellulosic material which includes a) dispersing pulped cellulosic material into water; and b) coloring the pulped cellulosic material by adding a cationic dispersion to the water, where the dispersion includes: (i) at least one pigment; (ii) water; and (iii) at least one acid salt of a styrene maleimide resin in an amount effective to disperse the pigment. The cationic dispersion may be prepared by (i) mixing, at 500 to 10,000 rpm, at least one pigment; water; and either (a) at least one acid salt of a styrene maleimide imide resin or (b) at least one styrene maleimide imide resin in combination with at least one weak acid, thereby forming a dispersion premix; (ii) milling the dispersion premix in a mixer filled with ceramic, metal or glass beads for a period of time sufficient to reduce pigment agglomerates to primary particles, thereby forming a nonstandarized dispersion; and (iii) standardizing the dispersion against a color standard by adding water.Type: GrantFiled: May 17, 2002Date of Patent: October 16, 2007Assignee: Sun Chemical CorporationInventors: Hans Rasmusen, Jorn R. Thorsson, James E. Moore, Charles W. Perry, Joseph P. LaBazzo
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Patent number: 7270880Abstract: The invention concerns discrete electrochromic particles comprising conducting, semiconducting or insulating nanoparticles having one or more electrochromic compounds adsorbed on the surface thereof. These particles may be deposited on an electrode in a single process step at a relatively low temperature, thereby allowing the use of heat-sensitive materials such as plastics as flexible substrates for the electrode.Type: GrantFiled: January 30, 2004Date of Patent: September 18, 2007Assignee: NTERA LimitedInventors: Francois Pichot, Udo Bach, Nigel Leyland, Donald Lupo, David Corr, S. Nagaraja Rao
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Patent number: 7267875Abstract: Ligand compositions for use in preparing discrete coated nanostructures are provided, as well as the coated nanostructures themselves and devices incorporating same. Methods for post-deposition shell formation on a nanostructure and for reversibly modifying nanostructures are also provided. The ligands and coated nanostructures of the present invention are particularly useful for close packed nanostructure compositions, which can have improved quantum confinement and/or reduced cross-talk between nanostructures.Type: GrantFiled: June 7, 2005Date of Patent: September 11, 2007Assignee: Nanosys, Inc.Inventors: Jeffery A. Whiteford, Mihai Buretea, William P. Freeman, Andreas Meisel, Kyu S. Min, J. Wallace Parce, Erik Scher
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Patent number: 7261940Abstract: Multifunctional nanocomposites are provided including a core of either a magnetic material or an inorganic semiconductor, and, a shell of either a magnetic material or an inorganic semiconductor, wherein the core and the shell are of differing materials, such multifunctional nanocomposites having multifunctional properties including magnetic properties from the magnetic material and optical properties from the inorganic semiconductor material. Various applications of such multifunctional nanocomposites are also provided.Type: GrantFiled: December 3, 2004Date of Patent: August 28, 2007Assignee: Los Alamos National Security, LLCInventors: Victor I. Klimov, Jennifer A. Hollingsworth, Scott A. Crooker, Hyungrak Kim
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Patent number: 7261939Abstract: A tablet comprising a core which is at least partially coated with an outer layer obtained by electrostatic deposition of a powder and subsequent fusing of the deposited powder to form a film characterised in that a surface of the tablet coated with said outer layer is contoured to provide higher regions and lower regions, the outer layer having a different colour in said lower regions to the outer layer in said higher regions.Type: GrantFiled: May 2, 2002Date of Patent: August 28, 2007Assignee: Phoqus LimitedInventors: Martin D. Hallett, Linda A. Reeves, Marshall Whiteman
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Patent number: 7258922Abstract: A method for treating a marker material includes combining at least one treatment for a marker material, a foaming agent and a solvent to form a marker composition, foaming the marker composition to form a foamed marker composition, and applying the foamed marker composition to a marker material.Type: GrantFiled: June 3, 2003Date of Patent: August 21, 2007Assignee: THI International, Inc.Inventors: Anthony Hesse, Paul Kittle
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Patent number: 7255922Abstract: The main object of the present invention is to provide an inorganic nanoparticle being a skutterudite compound, expected to realize the quantum effect, and a method for producing the same. The object of the present invention is achieved by providing an inorganic nanoparticle being a skutterudite compound, having the average particle size in a range of 2 nm to 100 nm.Type: GrantFiled: May 13, 2005Date of Patent: August 14, 2007Assignee: Dai Nippon Printing Co., Ltd.Inventor: Seiji Take
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Patent number: 7247374Abstract: The invention relates to preserving the properties of active particles through use of an encapsulant which may be removable. The encapsulant may protect the active particles against premature deactivation. If desired, the encapsulant may be removed to rejuvenate the active particles. Various processes can be implemented to introduce encapsulated particles to embedding substances which may be used in various products.Type: GrantFiled: June 12, 2003Date of Patent: July 24, 2007Assignee: TrapTek LLCInventor: Gregory W Haggquist
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Patent number: 7244492Abstract: Coated particle substrates having a coating of resin and/or water soluble polymers and soluble, fibrous material are provided for use in subterranean formations. The coated particle substrate particles are typically proppants used to prop open subterranean hydrocarbon formations during recovery processes, such as after a hydraulic fracture, and provide both improved settling characteristics and improved hydrocarbon flow characteristics due to the conductive channels formed by the soluble fibers downhole. Methods of making the coated particles are also described.Type: GrantFiled: March 4, 2004Date of Patent: July 17, 2007Assignee: Fairmount Minerals, Ltd.Inventors: A. Richard Sinclair, Syed Akbar, Patrick R. Okell
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Patent number: 7241500Abstract: Solar-reflective roofing granules having deep-tone colors are formed by coating base mineral particles with a coating composition including an infrared-reflective pigment. Color is provided by colored infrared pigment, light-interference platelet pigment, or a metal oxide.Type: GrantFiled: October 6, 2003Date of Patent: July 10, 2007Assignee: CertainTeed CorporationInventors: Ming Liang Shiao, Husnu M. Kalkanoglu, Keith C. Hong
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Patent number: 7235298Abstract: Pyrogenically prepared, doped zinc oxide powder, wherein the doping component comprises at least one oxide from the group aluminum, gallium, indium, germanium, tin and is present in the doped zinc oxide powder in an amount of from 0.005 to 15 wt. %, and wherein the doped zinc oxide powder is in the form of aggregates of primary particles having a mean maximum diameter of from 30 to 400 nm. It is prepared by oxidation from zinc powder and at least one doping agent, wherein the process zones vaporisation, nucleation, oxidation and quenching are passed through and the doping agent is metered in in the nucleation zone, in which the temperature is below the boiling temperature of zinc. The doped zinc oxide powder can be used in electrically conductive lacquers and coatings.Type: GrantFiled: July 7, 2003Date of Patent: June 26, 2007Assignee: Degussa AGInventors: Stipan Katusic, Guenther Michael, Peter Kress, Guido Zimmermann, Andreas Gutsch, Geoffrey J. Varga
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Patent number: 7226503Abstract: The present invention relates to effect pigments based on thin glass flakes and to a method for the production of such pigments. The resulting pigment can be used in any application for which pearlescent pigments have been heretofore used such as, for example, in plastics, paints, inks, cosmetic formulations, coatings including solvent or waterborne automotive paint systems, powder coatings, inks and agriculture foils.Type: GrantFiled: April 11, 2002Date of Patent: June 5, 2007Assignee: Merck Patent GmbHInventors: Ralf Anselmann, Klaus Ambrosius, Marcus Mathias
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Patent number: 7223472Abstract: The invention relates to coloured gloss pigments having specific particle dimensions comprising a transparent core of a silicon oxide of the composition SiO0.03 to SiO0.95 and, optionally, further coatings of silicon dioxide, carbon, a partially transparent metal and/or a dielectric of high refractive index, to a coating method suitable therefor wherein metallic silicon is vapour-deposited in the presence of a low oxygen partial pressure, to the use of such gloss pigments in pigmenting plastics, surface coatings, printing inks and cosmetic compositions, and also to pigmented compositions comprising such gloss pigments.Type: GrantFiled: March 4, 2003Date of Patent: May 29, 2007Assignee: Ciba Specialty Chemicals CorporationInventor: Patrice Bujard
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Patent number: 7214429Abstract: A sealing material for sealing an envelope of an electron tube. The sealing material comprises 0.01˜2.0 wt % of fine particle selected from the group consisting of SiO2, Al2O3 and ZrO2 having a particle diameter of 0.001˜0.1 ?m, P2O5—SnO type low melting glass and thermal expansion-controlling low melting ceramics.Type: GrantFiled: September 29, 2003Date of Patent: May 8, 2007Assignee: Futaba CorporationInventors: Masahiro Kato, Junichiro Kogure
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Patent number: 7210823Abstract: A lamp reflector having a substrate prepared by injection molding a bulk molding compound (BMC). The BMC has a matrix resin mainly including: an unsaturated polyester resin and glass fiber as a reinforcing inorganic filler, and hollow glass spheres in an amount of 10 to 40% by volume based on the BMC as an additional inorganic filler.Type: GrantFiled: October 21, 2003Date of Patent: May 1, 2007Assignee: Koito Manufacturing Co., Ltd.Inventors: Hisayoshi Daichou, Daisuke Mochizuki
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Patent number: 7179530Abstract: The present invention relates to a composite material comprising a microparticle support, which has metallic ions and non-metallic cations grafted thereto, a process for producing said composite material and its use.Type: GrantFiled: November 27, 2002Date of Patent: February 20, 2007Assignee: REBAC GmbHInventors: Shangxin Jiang, Isabella Luisi, Sigrun Clement
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Patent number: 7175910Abstract: The present invention relates to absorbent cores for absorbent articles, which are intended to receive and retain bodily discharges such as urine. Such articles are disposable hygiene articles like baby diapers, training pants, adult incontinence articles, feminine care articles and the like. The improvement essentially is based on the recognition that replacing most or all of the cushioning fibrous absorbent material in an absorbent core by a liquid storage material capable of retaining liquid while maintaining or improving acquisition behavior is desirable as the reduction in cushioning is more than compensated by the gain in comfort. The comfort however can only be achieved if the more fundamental requirements of a diaper in respect to liquid handling are satisfied or improved.Type: GrantFiled: August 21, 2003Date of Patent: February 13, 2007Assignee: The Procter & Gamble CompanyInventors: Bruno Ehrnsperger, Udo Friedel Schoenborn
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Patent number: 7175909Abstract: A water-soluble polymer is used to change surfaces of the magnetic metal oxide nanoparticles to hydrophilic surfaces. The hydrophilic magnetic metal s oxide nanoparticles can be stably dispersed in a water matrix. Then, the hydrophilic magnetic metal oxide nanoparticles are mixed with hydrophilic resin, and a nanometer-scale uniform size of nanoparticles is maintained.Type: GrantFiled: January 19, 2005Date of Patent: February 13, 2007Assignee: Taiwan Textile Research InstituteInventors: Ruey-Kai Hu, Hsien-Yi Chiu
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Patent number: 7163748Abstract: Methods for preparing crosslinking agents that are the ungelled reaction product of (a) at least one aminoplast resin and (b) at least one modifying compound, wherein the crosslinking agents are essentially free of active hydrogen functional groups and have a glass transition temperature of at least 10° C. are disclosed. The methods include, inter alia, the use of vacuum and/or increased rates of inert gas introduction during reaction.Type: GrantFiled: May 9, 2003Date of Patent: January 16, 2007Assignee: PPG Industries Ohio, Inc.Inventors: Ronald R. Ambrose, Thomas A. Cook, Shengkui Hu, Jonathan T. Martz
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Patent number: 7140438Abstract: The present invention relates to methods and compositions for treating subterranean formations, and more specifically, to improved methods and compositions for generating acids for use downhole, for example, to at least partially degrade the acid-soluble portions of filter cakes deposited in subterranean formations. In one embodiment, the present invention provides a method of degrading an acid-soluble portion of a filter cake comprising contacting the acid-soluble portion of the filter cake with an acid generated from an orthoester.Type: GrantFiled: January 7, 2004Date of Patent: November 28, 2006Assignee: Halliburton Energy Services, Inc.Inventors: Keith A. Frost, Gary P. Funkhouser, Bessie “Nita” Q. Citrowske, Brad L. Todd
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Patent number: 7135767Abstract: A semiconductor substrate is presented which is manufactured from hollow, gas-filled glass or ceramic microspheres, which are bound together in a dried or fired matrix. The microspheres may be glass-coated microspheres, which are bound together by sintering the outer layers of glass together. The semiconductor surface may be smoothed by glazing the surface.Type: GrantFiled: July 29, 2003Date of Patent: November 14, 2006Assignee: Agilent Technologies, Inc.Inventors: Marvin Glenn Wong, Arthur Fong
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Patent number: 7118921Abstract: Described is a carrier having a biomolecular interaction incorporated therein. The carrier is described as comprising a silica based glass and in an embodiment is a sol-gel derived glass. Also described are methods of incorporating biomolecular interaction within a carrier of the invention. Various types of biomolecular interaction are discussed as well as applications of carriers containing one or more biomolecular interactions.Type: GrantFiled: June 23, 2000Date of Patent: October 10, 2006Assignee: McMaster UniversityInventors: John D. Brennan, Christopher V. W. Hogue
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Patent number: 7105583Abstract: Compositions for use in optical fiber coatings, optical fibers and optical fiber arrays using these coatings and methods for making the same are disclosed. The composition comprises a combination of two different radiation curable urethanes, and can further comprise one or more reactive monomers.Type: GrantFiled: December 12, 2002Date of Patent: September 12, 2006Assignee: PPG Industries Ohio, Inc.Inventor: Shengkui Hu
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Patent number: 7101718Abstract: A semiconductor nanocrystal compound is described capable of linking to an affinity molecule. The compound comprises (1) a semiconductor nanocrystal capable of emitting electromagnetic radiation and/or absorbing energy, and/or scattering or diffracting electromagnetic radiation—when excited by an electromagnetic radiation source or a particle beam; and (2) at least one linking agent, having a first portion linked to the semiconductor nanocrystal and a second portion capable of linking to an affinity molecule. The compound is linked to an affinity molecule to form a semiconductor nanocrystal probe capable of bonding with a detectable substance. subsequent exposure to excitation energy will excite the semiconductor nanocrystal in the probe causing the emission of electromagnetic radiation.Type: GrantFiled: August 12, 2004Date of Patent: September 5, 2006Assignee: The Regents of the University of CaliforniaInventors: Shimon Weiss, Marcel Bruchez, Jr., Paul Alivisatos
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Patent number: 7045212Abstract: In order to provide a color metallic pigment capable of implementing diverse colors, excellent in finished appearance and weather resistance and manufacturable by a safe and simple manufacturing method, a color metallic pigment comprising metal particles and a single-layer or multilayer coat covering the surface of each metal particle characterized in that at least one layer of the single-layer or multilayer coat is a cobalt coat consisting of an anhydrous oxide film elementally containing cobalt is provided. This cobalt coat preferably contains a compound in composition expressed by at least one type of composition selected from a group consisting of CoO, Co2O3, Co3O4, nCoO.mAl2O3 and nCoO.mSiO2 (n, m: arbitrary positive real numbers).Type: GrantFiled: April 3, 2003Date of Patent: May 16, 2006Assignee: Toyo Aluminium Kabushiki KaishaInventors: Yoshiki Hashizume, Taro Morimitsu
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Patent number: 7037865Abstract: New composite materials having a high density of small particles, such as hollow microspheres, in a matrix material are disclosed. The microspheres are densely packed in the matrix material such that adjacent microspheres are positioned in contact with each other or very close together. Fiber flanking may be provided on the opposite sides of a layer of a core of composite material having the small particles and matrix material. Also disclosed are methods of making and using the composite materials.Type: GrantFiled: August 8, 2000Date of Patent: May 2, 2006Assignee: Moldite, Inc.Inventor: Lawrence W. Kimberly
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Patent number: 7035308Abstract: Described herein is a method and system for providing a countermeasure against laser detection systems using nanocomponent material that is tailored to cloak or obscure a target from detection by transmitted laser radiation. The nanodot material absorbs and/or down-converts the transmitted laser radiation. Similarly, described herein is a method and system for providing a countermeasure against laser systems intended to blind a target through the use of a specifically engineered nanocomponent material for absorbing and/or down-converting the radiation from the laser system.Type: GrantFiled: April 11, 2003Date of Patent: April 25, 2006Assignee: Science Applications International CorporationInventors: Scott Earl McNeil, Martin Joseph Fritts, Roy Reed Heddleston, Martin B. Mark
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Patent number: 7004333Abstract: Process for recovering at least 70% of hollow glass microspheres having an average diameter, according to the ASTM D1214-1989, ranging from 5 to 200 ?m contained in a mixture of drilling mud and cuttings which comprises: a) screening, if necessary, the mixture through one or more 5 to 20 mesh sieves; b) feeding the screened mixture to one or more cyclones and/or hydrocyclones arranged in series, each of which is fed with a volume flow-rate from 1.5 to 10 times higher than the maximum nominal operating value.Type: GrantFiled: November 13, 2001Date of Patent: February 28, 2006Assignees: ENI S.p.A., ENITECNOLOGIE S.p.A.Inventors: Armando Marcotullio, Raffaella Monga, Giuseppe Belmonte, Angelo Calderoni, Giovanni Ferrari
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Patent number: 6989197Abstract: A polymer composite structure having resin matrix interlayers reinforced with shape memory alloy (SMA) particles. In one preferred form Nitinol® alloy particles are used for the SMA particles. The Nitinol® alloy particles may comprise cylindrical, oval or spherical shaped particles and are intermixed in the resin of the resin matrix interlayer(s) of the composite structure. The SMA particles provide superelastic, reversible strain properties that significantly improve the damage resistance, damage tolerance (e.g. compression-after-impact (CAI) strength) and elevated temperature performance of the composite structure without negatively affecting the hot-wet compression strength of the composite structure. The polymer composite structure is ideally suited for aerospace and aircraft applications where lightweight and structurally strong materials are essential.Type: GrantFiled: November 4, 2002Date of Patent: January 24, 2006Assignee: The Boeing CompanyInventor: Terry L. Schneider
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Patent number: 6966998Abstract: A method of providing covert security features for documents such as vouchers, packaged goods and banknotes in which the document is provided with a dopant. The dopant consisting of a material which can be identified by examination of its response to visible wavelength photon radiation and which can be applied directly on or into the document or can be fused into glass matrices before application.Type: GrantFiled: November 8, 1999Date of Patent: November 22, 2005Inventor: Alexander Rollo Spowart
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Patent number: 6927069Abstract: A semiconductor nanocrystal compound is described capable of linking to an affinity molecule. The compound comprises (1) a semiconductor nanocrystal capable of emitting electromagnetic radiation and/or absorbing energy, and/or scattering or diffracting electromagnetic radiation—when excited by an electromagnetic radiation source or a particle beam; and (2) at least one linking agent, having a first portion linked to the semiconductor nanocrystal and a second portion capable of linking to an affinity molecule. The compound is linked to an affinity molecule to form a semiconductor nanocrystal probe capable of bonding with a detectable substance. Subsequent exposure to excitation energy will excite the semiconductor nanocrystal in the probe causing the emission of electromagnetic radiation.Type: GrantFiled: May 24, 2002Date of Patent: August 9, 2005Assignee: The Regents of the University of CaliforniaInventors: Shimon Weiss, Marcel Bruchez, Jr., Paul Alivisatos
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Patent number: 6919444Abstract: Preparations of particles having a glass surface, wherein more than 75% by weight of these particles have a particle size between 0.5 ?m and 15 ?m and a glass surface which contains between 2 and 6 mole % zinc oxide, have proven to be particularly advantageous in processes for the purification of nucleic acids. This in particular results in an increased nucleic acid yield.Type: GrantFiled: February 20, 2003Date of Patent: July 19, 2005Assignee: Roche Diagnostics GmbHInventors: Herbert Harttig, Michael Riedling, Martin Mennig, Helmut Schmidt
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Patent number: 6911159Abstract: Improved phosphor pigments are disclosed. The pigments consist of an inorganic phosphor pigment such as a Eu2+ activated alkaline earth metal aluminate/silicate which is bonded to borosilicate glass balloon microspheres. The density of the improved phosphor pigments is preferably in the range 0.20 to 1.50 g/cm3. A process for preparing the improved phosphor pigment is also disclosed.Type: GrantFiled: June 22, 2001Date of Patent: June 28, 2005Assignee: Nite-Glo Innovations Pty LtdInventors: Barry Rogers, Tony Rogers
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Patent number: 6908674Abstract: A jadeite material has a thickness in excess of about 1.0 mm and CIELAB indices of L*>42, a*<?6, and b*>+6. The grain size of the jadeite material is less than about 30 microns and is an equiaxed grain structure. The jadeite material has an optical transmission peak between 500 and 565 nm with an I/IO optical transmission ratio of over 40%. The first step in making the jadeite material is to wrap a glass block, convertible by HP/HT into jadeite and having a nominal composition of NaAlSi2O6, with a graphite or refractive metal sheet. The wrapped glass block is placed in an HP/HT apparatus, rapidly heated, and subjected therein to a pressure in excess of about 3 GPa and a temperature in excess of about 1000° C. for a time adequate to convert the glass block into jadeite. The jadeite material then is cooled and the pressure subsequently released.Type: GrantFiled: March 5, 2001Date of Patent: June 21, 2005Assignee: Diamond Innovations, Inc.Inventors: Suresh Shankarappa Vagarali, Thomas Richard Anthony, John Casey, Robert Charles DeVries, Stephen Lee Dole, John William Lucek, Alan Cameron Smith, Biju Varghese, Steven William Webb
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Patent number: 6905754Abstract: The present invention relates to optical elements comprising fluorochemical surface treatments having the general structure Rf-[G]m(CH2)n—X wherein Rf is a fluorinated alkyl group, G is a divalent linking group selected from oxygen (—O—) and sulfonamido (—SO2R—), m is an integer ranging from 0 to 1, n is an integer ranging from 1 to 24, and X is polar group or polar group containing radical. The invention further relates to materials such as retroreflective sheetings, pavement markings and beaded projection screens comprising a binder and the surface treated optical elements.Type: GrantFiled: April 26, 2002Date of Patent: June 14, 2005Assignee: 3M Innovative Properties CompanyInventors: Naiyong Jing, Zhongxing Zhang, Zai-Ming Qiu
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Patent number: 6887571Abstract: Silicon carbide particles coated with a pigmented coating result in silicon carbide particles which can be used in slip resistant flooring to achieve the desired slip resistance whilst giving improved aesthetic properties. The pigmented coating can be an organic coating such as a two part epoxy system or a water based or solvent based epoxy. Alternatively the pigmented coating can be an inorganic coating such as a ceramic glaze. Also provided are methods of coating silicon carbide particles with either an organic or an inorganic pigmented coating. Further provided are safety flooring materials including silicon carbide particles having a pigmented coating.Type: GrantFiled: March 30, 2001Date of Patent: May 3, 2005Assignee: Altro, LimitedInventor: Adrian John Shortland
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Patent number: 6884508Abstract: The invention relates to a coating element, a coated fibrous web, and methods for manufacturing the same. The invention also relates to a particle granule. The coating element comprises a pigment binder structure granule formed from pigment particles and a binding agent and, possibly, additives, the pigment particles being bound to one another through a binding agent. According to the invention, the shape of the granule is essentially rotationally symmetrical, comprising an inner part and a crust part, the density of the inner part being lower than the crust part. The granules can be prepared by spray drying from aqueous slurry that contains a pigment, binder, and possible additives. The shape of the coating elements can be altered by using controlled deformation. They can be flattened, for example, by calendering to form the surface of a desired shape, and attached to the surface of the fibrous web without a separate binder or by adding a small amount of binder only.Type: GrantFiled: April 18, 2001Date of Patent: April 26, 2005Inventor: Lars Grönroos
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Patent number: 6884510Abstract: The present-invention relates to optical elements comprising fluorochemical surface treatments. The invention further relates to materials such as retroreflective sheetings, pavement markings and beaded projection screens comprising a binder and the surface treated optical elements.Type: GrantFiled: April 29, 2003Date of Patent: April 26, 2005Assignee: 3M Innovative Properties CompanyInventors: Zai-Ming Qiu, Naiyong Jing
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Patent number: 6881483Abstract: Ceramic aggregate particles comprising a plurality of solid particulates bonded together by ceramic binding material and methods of providing a plurality of such particles having substantially uniform cross-sectional shape are provided. The ceramic aggregate particles may incorporate a high percentage of solid particulates. The ceramic binding material may closely conform to the outermost surfaces of the solid particulates contained within the ceramic aggregate particle. When abrasive particulates are employed as the solid particulates, abrasive articles can be made which provide consistent high cut rates and consistent surface finish over relatively long periods of time.Type: GrantFiled: February 11, 2004Date of Patent: April 19, 2005Assignee: 3M Innovative Properties CompanyInventors: James L. McArdle, Scott R. Culler, William P. Wood
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Patent number: 6875510Abstract: A structure (1) for reflecting light uses at least two materials having different refractive indices. The structure (1) for reflecting light includes a first material (2) having light transmittance, and a plurality of fine structures (3) made of a second material, placed within the first material (2), with regularity sufficient to express reflection functions of light based on diffraction and scattering actions.Type: GrantFiled: August 5, 2002Date of Patent: April 5, 2005Assignee: Nissan Motor Co., Ltd.Inventors: Kinya Kumazawa, Hiroshi Tabata, Hidekazu Takahashi, Yasuaki Kai
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Patent number: 6870047Abstract: Magnetic particles are prepared containing a magnetic core coated with a glass layer having a substantially pore-free class surface or having pores with a diameter offices than 10 nm. The particles are used for separating biological material such as nucleic acids. A preferred process of preparing the particles is by forming a mixture of magnetic cores with a sol formed from an alcohol and a metal alkoxide, spray-drying the mixture to coat the cores with a layer of gelled sol, and heating the coated cores to obtain the magnetic glass particles. Preferably, the particles have an average particle size of less than 100 ?m. The magnetic core may be a composite material containing a mica core and magnetite particles immobilized on the mica core, and the glass layer may contain boron oxide. Magnetic core materials include magnetite (Fe3O4) and Fe2O3.Type: GrantFiled: January 10, 2001Date of Patent: March 22, 2005Assignee: Roche Diagnostics GmbHInventors: Jörg Kleiber, Thomas Walter, Herbert Harttig, Christoph Lesniak, Martin Mennig, Michael Riedling, Helmut Schmidt
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Patent number: 6866934Abstract: A hardening type reactive particles which contain a carbodiimide compound in such a way to have the reactive performance the carbodiimide group inherently has only in the surface layer section or both surface layer section and inside of the base particle, without deforming shape of the base particle. The hardening type reactive particles each comprising a base particle (A) of thermoplastic resin having a functional group and carbodiimide compound (B) impregnated only in the surface layer section or both surface layer section and inside of the base particle, wherein the base particle (A) and carbodiimide compound (B) are strong bonded to each other by the crosslinking reaction taking place under heating between the functional group in the former and carbodiimide group in the latter, and a process for producing the same.Type: GrantFiled: March 13, 2003Date of Patent: March 15, 2005Assignee: Nisshinbo Industries, Inc.Inventors: Ikuo Takahashi, Toshifumi Hashiba, Kazutoshi Hayakawa