Glass Particles Or Spheres Patents (Class 428/406)
  • Patent number: 7341780
    Abstract: 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: Grant
    Filed: February 23, 2005
    Date of Patent: March 11, 2008
    Assignee: Timson Oy
    Inventor: Lars Gronroos
  • Patent number: 7338710
    Abstract: 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: Grant
    Filed: June 6, 2003
    Date of Patent: March 4, 2008
    Assignee: Sony Chemicals & Information Device Corporation
    Inventors: Kazunobu Kamiya, Ryoji Kojima
  • Publication number: 20080038559
    Abstract: 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: Application
    Filed: September 13, 2006
    Publication date: February 14, 2008
    Inventor: Randall True
  • Patent number: 7303818
    Abstract: 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: Grant
    Filed: April 7, 2005
    Date of Patent: December 4, 2007
    Assignee: Canon Kabusihi Kaisha
    Inventor: Masato Minami
  • Patent number: 7300893
    Abstract: 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: Grant
    Filed: June 10, 2004
    Date of Patent: November 27, 2007
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Roshdy George S. Barsoum, Dudt Philip
  • Patent number: 7297403
    Abstract: 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: Grant
    Filed: October 12, 2005
    Date of Patent: November 20, 2007
    Assignee: TDK Corporation
    Inventors: Kazushige Ito, Akira Sato
  • Patent number: 7285508
    Abstract: 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: Grant
    Filed: April 30, 2004
    Date of Patent: October 23, 2007
    Assignee: Nippon Sheet Glass Company, Limited
    Inventors: Kosuke Fujiwara, Akihiro Koyama
  • Patent number: 7282260
    Abstract: 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: Grant
    Filed: February 5, 2003
    Date of Patent: October 16, 2007
    Assignee: Unitech, LLC
    Inventors: Wayne B. LeGrande, Robert C. Boyd
  • Patent number: 7282263
    Abstract: 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: Grant
    Filed: May 17, 2002
    Date of Patent: October 16, 2007
    Assignee: Sun Chemical Corporation
    Inventors: Hans Rasmusen, Jorn R. Thorsson, James E. Moore, Charles W. Perry, Joseph P. LaBazzo
  • Patent number: 7270880
    Abstract: 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: Grant
    Filed: January 30, 2004
    Date of Patent: September 18, 2007
    Assignee: NTERA Limited
    Inventors: Francois Pichot, Udo Bach, Nigel Leyland, Donald Lupo, David Corr, S. Nagaraja Rao
  • Patent number: 7267875
    Abstract: 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: Grant
    Filed: June 7, 2005
    Date of Patent: September 11, 2007
    Assignee: Nanosys, Inc.
    Inventors: Jeffery A. Whiteford, Mihai Buretea, William P. Freeman, Andreas Meisel, Kyu S. Min, J. Wallace Parce, Erik Scher
  • Patent number: 7261940
    Abstract: 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: Grant
    Filed: December 3, 2004
    Date of Patent: August 28, 2007
    Assignee: Los Alamos National Security, LLC
    Inventors: Victor I. Klimov, Jennifer A. Hollingsworth, Scott A. Crooker, Hyungrak Kim
  • Patent number: 7261939
    Abstract: 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: Grant
    Filed: May 2, 2002
    Date of Patent: August 28, 2007
    Assignee: Phoqus Limited
    Inventors: Martin D. Hallett, Linda A. Reeves, Marshall Whiteman
  • Patent number: 7258922
    Abstract: 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: Grant
    Filed: June 3, 2003
    Date of Patent: August 21, 2007
    Assignee: THI International, Inc.
    Inventors: Anthony Hesse, Paul Kittle
  • Patent number: 7255922
    Abstract: 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: Grant
    Filed: May 13, 2005
    Date of Patent: August 14, 2007
    Assignee: Dai Nippon Printing Co., Ltd.
    Inventor: Seiji Take
  • Patent number: 7247374
    Abstract: 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: Grant
    Filed: June 12, 2003
    Date of Patent: July 24, 2007
    Assignee: TrapTek LLC
    Inventor: Gregory W Haggquist
  • Patent number: 7244492
    Abstract: 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: Grant
    Filed: March 4, 2004
    Date of Patent: July 17, 2007
    Assignee: Fairmount Minerals, Ltd.
    Inventors: A. Richard Sinclair, Syed Akbar, Patrick R. Okell
  • Patent number: 7241500
    Abstract: 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: Grant
    Filed: October 6, 2003
    Date of Patent: July 10, 2007
    Assignee: CertainTeed Corporation
    Inventors: Ming Liang Shiao, Husnu M. Kalkanoglu, Keith C. Hong
  • Patent number: 7235298
    Abstract: 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: Grant
    Filed: July 7, 2003
    Date of Patent: June 26, 2007
    Assignee: Degussa AG
    Inventors: Stipan Katusic, Guenther Michael, Peter Kress, Guido Zimmermann, Andreas Gutsch, Geoffrey J. Varga
  • Patent number: 7226503
    Abstract: 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: Grant
    Filed: April 11, 2002
    Date of Patent: June 5, 2007
    Assignee: Merck Patent GmbH
    Inventors: Ralf Anselmann, Klaus Ambrosius, Marcus Mathias
  • Patent number: 7223472
    Abstract: 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: Grant
    Filed: March 4, 2003
    Date of Patent: May 29, 2007
    Assignee: Ciba Specialty Chemicals Corporation
    Inventor: Patrice Bujard
  • Patent number: 7214429
    Abstract: 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: Grant
    Filed: September 29, 2003
    Date of Patent: May 8, 2007
    Assignee: Futaba Corporation
    Inventors: Masahiro Kato, Junichiro Kogure
  • Patent number: 7210823
    Abstract: 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: Grant
    Filed: October 21, 2003
    Date of Patent: May 1, 2007
    Assignee: Koito Manufacturing Co., Ltd.
    Inventors: Hisayoshi Daichou, Daisuke Mochizuki
  • Patent number: 7179530
    Abstract: 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: Grant
    Filed: November 27, 2002
    Date of Patent: February 20, 2007
    Assignee: REBAC GmbH
    Inventors: Shangxin Jiang, Isabella Luisi, Sigrun Clement
  • Patent number: 7175910
    Abstract: 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: Grant
    Filed: August 21, 2003
    Date of Patent: February 13, 2007
    Assignee: The Procter & Gamble Company
    Inventors: Bruno Ehrnsperger, Udo Friedel Schoenborn
  • Patent number: 7175909
    Abstract: 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: Grant
    Filed: January 19, 2005
    Date of Patent: February 13, 2007
    Assignee: Taiwan Textile Research Institute
    Inventors: Ruey-Kai Hu, Hsien-Yi Chiu
  • Patent number: 7163748
    Abstract: 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: Grant
    Filed: May 9, 2003
    Date of Patent: January 16, 2007
    Assignee: PPG Industries Ohio, Inc.
    Inventors: Ronald R. Ambrose, Thomas A. Cook, Shengkui Hu, Jonathan T. Martz
  • Patent number: 7140438
    Abstract: 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: Grant
    Filed: January 7, 2004
    Date of Patent: November 28, 2006
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Keith A. Frost, Gary P. Funkhouser, Bessie “Nita” Q. Citrowske, Brad L. Todd
  • Patent number: 7135767
    Abstract: 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: Grant
    Filed: July 29, 2003
    Date of Patent: November 14, 2006
    Assignee: Agilent Technologies, Inc.
    Inventors: Marvin Glenn Wong, Arthur Fong
  • Patent number: 7118921
    Abstract: 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: Grant
    Filed: June 23, 2000
    Date of Patent: October 10, 2006
    Assignee: McMaster University
    Inventors: John D. Brennan, Christopher V. W. Hogue
  • Patent number: 7105583
    Abstract: 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: Grant
    Filed: December 12, 2002
    Date of Patent: September 12, 2006
    Assignee: PPG Industries Ohio, Inc.
    Inventor: Shengkui Hu
  • Patent number: 7101718
    Abstract: 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: Grant
    Filed: August 12, 2004
    Date of Patent: September 5, 2006
    Assignee: The Regents of the University of California
    Inventors: Shimon Weiss, Marcel Bruchez, Jr., Paul Alivisatos
  • Patent number: 7045212
    Abstract: 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: Grant
    Filed: April 3, 2003
    Date of Patent: May 16, 2006
    Assignee: Toyo Aluminium Kabushiki Kaisha
    Inventors: Yoshiki Hashizume, Taro Morimitsu
  • Patent number: 7037865
    Abstract: 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: Grant
    Filed: August 8, 2000
    Date of Patent: May 2, 2006
    Assignee: Moldite, Inc.
    Inventor: Lawrence W. Kimberly
  • Patent number: 7035308
    Abstract: 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: Grant
    Filed: April 11, 2003
    Date of Patent: April 25, 2006
    Assignee: Science Applications International Corporation
    Inventors: Scott Earl McNeil, Martin Joseph Fritts, Roy Reed Heddleston, Martin B. Mark
  • Patent number: 7004333
    Abstract: 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: Grant
    Filed: November 13, 2001
    Date of Patent: February 28, 2006
    Assignees: ENI S.p.A., ENITECNOLOGIE S.p.A.
    Inventors: Armando Marcotullio, Raffaella Monga, Giuseppe Belmonte, Angelo Calderoni, Giovanni Ferrari
  • Patent number: 6989197
    Abstract: 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: Grant
    Filed: November 4, 2002
    Date of Patent: January 24, 2006
    Assignee: The Boeing Company
    Inventor: Terry L. Schneider
  • Patent number: 6966998
    Abstract: 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: Grant
    Filed: November 8, 1999
    Date of Patent: November 22, 2005
    Inventor: Alexander Rollo Spowart
  • Patent number: 6927069
    Abstract: 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: Grant
    Filed: May 24, 2002
    Date of Patent: August 9, 2005
    Assignee: The Regents of the University of California
    Inventors: Shimon Weiss, Marcel Bruchez, Jr., Paul Alivisatos
  • Patent number: 6919444
    Abstract: 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: Grant
    Filed: February 20, 2003
    Date of Patent: July 19, 2005
    Assignee: Roche Diagnostics GmbH
    Inventors: Herbert Harttig, Michael Riedling, Martin Mennig, Helmut Schmidt
  • Patent number: 6911159
    Abstract: 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: Grant
    Filed: June 22, 2001
    Date of Patent: June 28, 2005
    Assignee: Nite-Glo Innovations Pty Ltd
    Inventors: Barry Rogers, Tony Rogers
  • Patent number: 6908674
    Abstract: 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: Grant
    Filed: March 5, 2001
    Date of Patent: June 21, 2005
    Assignee: 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
  • Patent number: 6905754
    Abstract: 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: Grant
    Filed: April 26, 2002
    Date of Patent: June 14, 2005
    Assignee: 3M Innovative Properties Company
    Inventors: Naiyong Jing, Zhongxing Zhang, Zai-Ming Qiu
  • Patent number: 6887571
    Abstract: 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: Grant
    Filed: March 30, 2001
    Date of Patent: May 3, 2005
    Assignee: Altro, Limited
    Inventor: Adrian John Shortland
  • Patent number: 6884508
    Abstract: 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: Grant
    Filed: April 18, 2001
    Date of Patent: April 26, 2005
    Inventor: Lars Grönroos
  • Patent number: 6884510
    Abstract: 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: Grant
    Filed: April 29, 2003
    Date of Patent: April 26, 2005
    Assignee: 3M Innovative Properties Company
    Inventors: Zai-Ming Qiu, Naiyong Jing
  • Patent number: 6881483
    Abstract: 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: Grant
    Filed: February 11, 2004
    Date of Patent: April 19, 2005
    Assignee: 3M Innovative Properties Company
    Inventors: James L. McArdle, Scott R. Culler, William P. Wood
  • Patent number: 6875510
    Abstract: 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: Grant
    Filed: August 5, 2002
    Date of Patent: April 5, 2005
    Assignee: Nissan Motor Co., Ltd.
    Inventors: Kinya Kumazawa, Hiroshi Tabata, Hidekazu Takahashi, Yasuaki Kai
  • Patent number: 6870047
    Abstract: 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: Grant
    Filed: January 10, 2001
    Date of Patent: March 22, 2005
    Assignee: Roche Diagnostics GmbH
    Inventors: Jörg Kleiber, Thomas Walter, Herbert Harttig, Christoph Lesniak, Martin Mennig, Michael Riedling, Helmut Schmidt
  • Patent number: 6866934
    Abstract: 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: Grant
    Filed: March 13, 2003
    Date of Patent: March 15, 2005
    Assignee: Nisshinbo Industries, Inc.
    Inventors: Ikuo Takahashi, Toshifumi Hashiba, Kazutoshi Hayakawa