Patents Examined by H. Thi Le
  • Patent number: 7405001
    Abstract: The present disclosure relates to a nanoparticle containing at least one metal sulfide nanocrystal having a surface modified with a carboxylic acid, wherein the carboxylic acid has at least one aryl group. The present disclosure also describes a method of preparing the nanoparticle, the method consisting of: (a) providing a first solution having a first organic solvent, and a non-alkali metal salt and a carboxylic acid dissolved therein, wherein the carboxylic acid has at least one aryl group; (b) providing a sulfide material; and (c) combining the first solution and the sulfide material to form a reaction solution, thereby forming a nanoparticle containing at least one metal sulfide nanocrystal having a surface modified with the carboxylic acid, wherein the carboxylic acid has at least one aryl group.
    Type: Grant
    Filed: March 24, 2005
    Date of Patent: July 29, 2008
    Assignee: 3M Innovative Properties Company
    Inventors: Igor Y. Denisyuk, Todd R. Williams
  • Patent number: 7393585
    Abstract: A plurality of micron-size solid particles is described herein that includes at least one polyamide compound, wherein the particles comprise a diameter in the range of about 1 micron to about 1000 microns, and wherein at least some of the plurality of particles are substantially transparent. In addition, a plurality of micron-size solid particles is described herein that includes at least one polyamide compound, wherein the particles comprise a diameter of less than about 4 microns.
    Type: Grant
    Filed: October 13, 2003
    Date of Patent: July 1, 2008
    Assignee: Honeywell International Inc.
    Inventor: Ronald Highsmith
  • Patent number: 7390576
    Abstract: A method to produce dispersion of magnetic metal particle aggregates is provided. FePt nanoparticles are uniformly dispersed with the particles separated at controlled inter-particle spacing. The magnetic metal particle aggregate is composed of magnetic metal particles whose main components and the contents thereof are represented by the following general formula (1): [TXM1?X]YZ1?Y, ??(1) where T is one or both of Fe and Co, M is one or both of Pt and Pd, Z is at least one member selected from the group composed of Ag, Cu, Bi, Sb, Pb and Sn, X represents 0.3˜0.7, and Y represents 0.7˜1.0, the balance being impurities unavoidably incorporated during production, wherein the proportion of face-centered tetragonal structure is in the range of 10˜100%, the particles have an average diameter of 30 nm or less, and the particles are in a dispersed state spaced apart from one another.
    Type: Grant
    Filed: July 26, 2004
    Date of Patent: June 24, 2008
    Assignee: Dowa Electronics Materials Co., Ltd.
    Inventor: Kimitaka Sato
  • Patent number: 7368167
    Abstract: Microsphere beads are mixed with a surface barrier solid, liquid or mixture of such a liquid with a solid effective to prevent agglomeration and surface bonding of the microspheres; by the control of the application of heat and balancing temperature and active mixing, removal of water from and expansion of the microsphere is achieved. Microsphere densities of as low as 0.005 to less than 0.015 g/cm3 are realized. The surface barrier solid, liquid or mixture of such a liquid with a solid in the present invention is any one of a wide diversity of materials which meet the requirements of the intended function, i.e., to prevent the agglomeration of the microspheres during the process. Suitable materials include, by way of example, fillers, pigments, plasticizers, diluents, extenders, monomers and oligomers and the like.
    Type: Grant
    Filed: June 17, 2004
    Date of Patent: May 6, 2008
    Assignee: Henkel Corporation
    Inventors: Richard W Johnston, Richard F. Clark
  • Patent number: 7361410
    Abstract: Modified and functionalized metallic nanoclusters capable of providing an enhanced Raman signal from an organic Raman-active molecule incorporated therein are provided. For example, modifications include coatings and layers, such as adsorption layers, metal coatings, silica coatings, and organic layers. The nanoclusters are generally referred to as COINs (composite organic inorganic nanoparticles) and are capable of acting as sensitive reporters for analyte detection. A metal that enhances the Raman signal from the organic Raman-active compound is inherent in the nanocluster. A variety of organic Raman-active compounds and mixtures of compounds can be incorporated into the nanocluster.
    Type: Grant
    Filed: September 13, 2004
    Date of Patent: April 22, 2008
    Assignee: Intel Corporation
    Inventors: Jingwu Zhang, Xing Su, Lei Sun
  • Patent number: 7344583
    Abstract: Composite particles of a metal particle within a crosslinked, cored dendrimer are described. Additionally, methods of making the composite particles and compositions that contain the composite particles are described.
    Type: Grant
    Filed: March 31, 2005
    Date of Patent: March 18, 2008
    Assignee: 3M Innovative Properties Company
    Inventors: Michael S. Wendland, Neal A. Rakow, Mary I. Buckett
  • Patent number: 7326654
    Abstract: Monodisperse nanoparticles are prepared with a high degree of reproducibility by controlling pH in size-selective photoetching. The nanoparticles have uniform optical properties and other properties.
    Type: Grant
    Filed: May 26, 2004
    Date of Patent: February 5, 2008
    Assignee: Hitachi Software Engineering Co., Ltd.
    Inventors: Keiichi Sato, Susumu Kuwabata, Tsukasa Torimoto
  • Patent number: 7282262
    Abstract: The particulate water absorbent has a cross-linking structure therein, and contains (i) a particulate water absorbent resin having a cross-linking structure on a surface therof and (ii) not less than 0.001 mass % and less than 10 mass % of anorganic acid multivalent metal salt whose molecule contains not less than seven carbon atoms. Futher, the particulate water absorbent contains 90 mass % of particles, whose particle diameter is not less than 106 ?m and 850 ?m, with respect to the particulate water absorbent.
    Type: Grant
    Filed: February 9, 2004
    Date of Patent: October 16, 2007
    Assignee: Nippon Shokubai Co., Ltd.
    Inventors: Yoshifumi Adachi, Takahiro Kitano, Hirotama Fujimaru, Kozo Nogi
  • Patent number: 7276193
    Abstract: A method for forming an ultrafine particle brittle material at low temperature which includes the steps of applying a mechanical impact force or a pressure to a ultrafine particle brittle material so as to have a percentage in the ultrafine particles having a primary particle diameter less than 50 nm in all the particles of 10 to 90%, subjecting the resulting brittle material to a heat treatment at a temperature not higher than the sintering temperature thereof so as to have the above percentage of 50% or less, and then applying a mechanical impact force not less than the crushing strength to the resultant material, to crush the material, thereby joining the ultrafine particles in the brittle material with one another, to form a formed article of the ultrafine particle brittle material; and an ultrafine particle brittle material for use in the method.
    Type: Grant
    Filed: May 28, 2003
    Date of Patent: October 2, 2007
    Assignee: National Institute of Advanced Industrial Science and Technology
    Inventors: Jun Akedo, Maxim Lebedev
  • Patent number: 7273652
    Abstract: Production of hollow carbon fibers and hollow carbon particles includes baking and carbonization of polymer particles having a specified volume after deformation. A metal-deposited carbon fiber with metal deposited inside and/or outside the hollow carbon fiber is applicable to electron discharge devices. The thickness and crystallinity of the graphite layer can be freely controlled. Since almost no by-product is generated, separation and refining using a solvent is not required. A hollow carbon particle of desired shape can be produced at a high yield rate. The hollow carbon fiber represented by a carbon nano-tube can be controlled in such a way that a low resistance and uniform shape are provided so that there is an increase in the amount of electrons discharged from the hollow carbon fiber. Use of this hollow carbon fiber as an electron discharge source provides an excellent electron discharge device characterized by stable pixels.
    Type: Grant
    Filed: October 15, 2002
    Date of Patent: September 25, 2007
    Assignee: Hitachi Chemical Company, Ltd.
    Inventors: Shinji Takeda, Noriyuki Taguchi, Kazumi Kokaji, Osamu Hirai
  • Patent number: 7270881
    Abstract: This invention is directed to coated water-swellable materials, typically solid, particulate, water-swellable materials, i.e. materials that comprise hydrogel-forming polymers, whereof at least a part is coated with a coating, which substantially does not break when the polymers swell, as set out in the method herein. Said coating is present at a level of at least 1% by weight of the water-swellable material. The coating comprises preferably an elastomeric polymeric material. The invention also relates products, e.g., disposable absorbent articles, comprising such coated water-swellable material.
    Type: Grant
    Filed: August 5, 2004
    Date of Patent: September 18, 2007
    Assignee: The Procter & Gamble Company
    Inventors: Mattias Schmidt, Axel Meyer, Bruno Johannes Ehrnsperger, Stephen Allen Goldman, Edward Joseph Urankar
  • Patent number: 7267876
    Abstract: The resin-coated sand is produced by coating the surface of a refractory granular aggregate with a thermosetting resin and a thermoplastic resin. When using this resin-coated sand, a mold with a less rough surface can be produced by a RP molding apparatus. When using this mold made of the resin-coated sand, a casting with fewer gas defects can be produced.
    Type: Grant
    Filed: March 31, 2004
    Date of Patent: September 11, 2007
    Assignee: Gun Ei Chemical Industry Co., Ltd.
    Inventors: Akihiro Okubo, Tatsunosuke Murakami, Fumitoshi Takeuchi, Koki Shiduka
  • Patent number: 7264872
    Abstract: The present invention includes ultraviolet curable compositions preferably containing discrete, crystalline zirconia nanoparticles with reactive, or copolymerizable, surface modification, in a polymerizable monomer/oligomer resin mixture. It is believed that copolymerizable surface modification provides a functional group that enables the functionalized particle to co-polmerize with the reactive monomers, oligomers, and crosslinkers in the formulation. Relative to surface modification of the nanoparticles, acrylate functionality is preferred over methacrylate functionality. On the other hand, methacrylate functionality is preferred over non-reactive, or nonpolymerizable, functionality. As the nanocomposite cures, the resultant network is heavily crosslinked by selection of raw materials with substantial acrylate functionality.
    Type: Grant
    Filed: December 30, 2004
    Date of Patent: September 4, 2007
    Assignee: 3M Innovative Properties Company
    Inventors: Christopher B. Walker, Jr., Brant U. Kolb, Emily S. Goenner, Vivian W. Jones, Sharon Wang, Joan M. Noyola
  • Patent number: 7264874
    Abstract: Disclosed are metal chalcogenide nanocomposites made of guest metal chalcogenide precursors and host metal oxide sols made by mixing at least one metal alkoxide, at least one organosilane, at least one boron oxide compound, and a liquid, and chalcogenizing the mixture. Also disclosed are dielectric nano-composites containing a dielectric material such as a polymer and the metal chalcogenide nanocomposites.
    Type: Grant
    Filed: December 22, 2004
    Date of Patent: September 4, 2007
    Assignee: APS Laboratory
    Inventor: Hong-Son Ryang
  • Patent number: 7264876
    Abstract: The present invention relates to new compositions of matter and articles of manufacture comprising SWNTs as nanometer scale conducting rods dispersed in an electrically-insulating matrix. These compositions of matter have novel and useful electrical, mechanical, and chemical properties including applications in antennas, electromagnetic and electro-optic devices, and high-toughness materials. Other compositions of matter and articles of manufacture are disclosed. including polymer-coated and polymer wrapped single-wall nanotubes (SWNTs), small ropes of polymer-coated and polymer-wrapped SWNTs and materials comprising same. This composition provides one embodiment of the SWNT conducting-rod composite mentioned above, and also enables creation of high-concentration suspensions of SWNTs and compatibilization of SWNTs with polymeric matrices in composite materials.
    Type: Grant
    Filed: August 23, 2001
    Date of Patent: September 4, 2007
    Assignee: William Marsh Rice University
    Inventors: Richard E. Smalley, Daniel T. Colbert, Ken A. Smith, Michael O'Connell
  • Patent number: 7247377
    Abstract: An absorbent composition of matter acts as a carrier for an active ingredient. The active ingredient is gradually released by the carrier in a controlled manner, which is compatible with the environment and current tendencies towards the use of organic and biodegradable products. The carrier is characterized as being particles obtained from the milling, separation, air wash and classification of the different fractions obtained from corncobs. The active ingredient is, for example, an essential oil, such as garlic oil or extract that may be combined with other essential oils for a synergistic effect that results in an improved insecticide/fungicide that is natural and contains no chemical additives. Alternatively, an artificially obtained substitute, for example, allyl isothiocyanate (AITC), can be used as a substitute for mustard seed oil.
    Type: Grant
    Filed: October 14, 2005
    Date of Patent: July 24, 2007
    Inventors: Genaro Casas Jassan, Jose Represas de Almeida
  • Patent number: 7247371
    Abstract: Physical characteristics of ATO fine particles capable of exhibiting such optical properties as a high visible light transmittance, a low solar radiation transmittance, and a low haze value when the ATO fine particles are formed on a transparent substrate or in the substrate are clarified, and the ATO fine particles having the physical characteristics thereof are manufactured. The ATO fine particles having such physical characteristics that a size of a crystallite constituting the ATO fine particles is 4 to 125 nm, and that a specific surface area of the fine particles of 5 to 110 m2/g can exhibit the above-described optical properties, and an example of a method for manufacturing thereof is to parallel-drop an antimony chloride alcoholic solution and an ammonium hydrogen carbonate aqueous solution in a tin chloride aqueous solution, thoroughly wash generated precipitates, dry and calcinate them in an atmosphere, thereby the ATO fine particles are manufactured.
    Type: Grant
    Filed: July 1, 2003
    Date of Patent: July 24, 2007
    Assignee: Sumitomo Metal Mining Co., Ltd.
    Inventors: Takeshi Chonan, Hiroko Kuno
  • Patent number: 7247376
    Abstract: A powder containing Fe—Ni nano-particles and a method for manufacturing the powder, wherein the powder containing Fe—Ni nano-particles includes a carrier and Fe—Ni nano-particles. The carrier is a ceramic particle with size of about micro-meter (?m). Fe and Ni atoms of the Fe—Ni nano-particles exist simultaneously on the surface of the carrier by electroless plating technology. The atomic ratio of the Fe and Ni atoms can be controlled by changing the relative concentration of the plating solution and the plating condition. The method for manufacturing the powder containing Fe—Ni nano-particles includes the following steps: preparation process, sensitization process, activation process, electroless plating process, and after-deposition process. The manufactured powder has small volume and large surface area. The contact chance between Fe/Ni bimetal and chlorinated organic substance is largely increased. It can be used to treat various environmental pollutants or for some catalytic reactions.
    Type: Grant
    Filed: June 17, 2004
    Date of Patent: July 24, 2007
    Inventors: Wen-Jauh Chen, Wei-Long Liu, Ting-Kan Tsai, Shu-Huei Hsieh, Jao-Jia Horng
  • Patent number: 7244499
    Abstract: A technique of stably bonding a structure including a carbon nanotube with another structure is to be provided. Also, a nano-device that offers excellent performance and high production efficiency is to be provided. A polymer and a carbon nanotube are dispersed in a dispersion medium and on a filled liquid in a Langmuir trough, to obtain a carbon nanotube-based structure constituted of a carbon nanotube and the polymer wound around its rounded surface. The carbon nanotube-based structure is adhered to a substrate, and a ligand is immobilized on a side chain of the polymer. A receptor is immobilized on another carbon nanotube-based structure, and the both carbon nanotube-based structures are joined because of a specific interaction between the ligand and the receptor.
    Type: Grant
    Filed: January 6, 2004
    Date of Patent: July 17, 2007
    Assignee: Sanyo Electric Co., Ltd.
    Inventors: Yukihiro Sugiyama, Yasuhiro Oue
  • Patent number: 7244287
    Abstract: The present invention relates to a method of producing a magnetic particle including forming a layer containing an alloy particle that can form a CuAu-type or Cu3Au-type hard magnetic ordered alloy phase on a support, oxidizing the layer, and annealing the layer in a non-oxidizing atmosphere. The invention also relates to a method of producing a magnetic particle including producing an alloy particle that can form a hard magnetic ordered alloy phase, oxidizing the alloy particle, and annealing the particle in a non-oxidizing atmosphere, and a magnetic particle produced by the foregoing production method. Further, the invention relates to a magnetic recording medium comprising a magnetic layer containing a magnetic particle and a method of producing a magnetic recording medium including forming a layer containing an alloy that can form the foregoing hard magnetic ordered alloy phase, oxidizing the layer, and annealing the layer in a non-oxidizing atmosphere.
    Type: Grant
    Filed: July 22, 2004
    Date of Patent: July 17, 2007
    Assignee: Fujifilm Corporation
    Inventors: Yasushi Hattori, Koukichi Waki, Keizo Ogawa