Group Iiia Metal Or Beryllium (al, Ga, In, Tl, Or Be) Patents (Class 423/624)
  • Publication number: 20110003085
    Abstract: A porous metal oxide is formed by creating a metal oxide material with a hydrolysis reaction in solution. The hydrolysis reaction or reaction products of a metal oxide precursor react simultaneously or in conjunction with a metal salt or a disassociation species of a metal salt. The metal oxide material is conditioned, and is refined to produce metal oxide particles having a porous structure containing crystallites.
    Type: Application
    Filed: September 7, 2010
    Publication date: January 6, 2011
    Applicant: CARRIER CORPORATION
    Inventors: Treese Hugener-Campbell, Thomas Henry Vanderspurt, Wayde R. Schmidt, Steven M. Zhitnik
  • Publication number: 20100324346
    Abstract: The invention concerns a catalyst comprising nickel on an aluminium oxide support. The aluminium oxide support has, in the calcined state, a diffractogram obtained by X ray diffractometry comprising peaks which correspond to the following interplanar spacings and relative intensities: Interplanar spacings Relative intensities d (10?10 m ) I/I0 (%) 5.03 to 5.22 ?1-5 4.56 to 4.60 ?1-10 4.06 to 4.10 ?1-5 2.80 to 2.85 ?5-20 2.73 15-35 2.60 ?5-10 2.43 35-40 2.29 30-40 1.99 60-95 1.95 25-50 1.79 ?1-10 1.53 ?5-10 1.51 ?5-10 1.41 40-60 1.39 100 1.23 to 1.26 ?1-5 1.14 ?5-10 1.11 ?1-5 1.04 ?1-5 1.00 ?5-10 0.
    Type: Application
    Filed: January 30, 2009
    Publication date: December 23, 2010
    Applicant: IFP ENERGIES NOUVELLES
    Inventors: Anne Claire Dubreuil, Lars Fischer, Bernadette Rebours, Renaud Revel, Cecile Thomazeau
  • Patent number: 7846868
    Abstract: A honeycomb-shaped substrate for catalyst is made from ceramic, has a straight-flow structure, and includes cellular walls exhibiting pore volumes, which differ partially, and a large number of cellular passages demarcated by the cellular walls. A catalyst for purifying exhaust gases is produced by providing the cellular walls of the honeycomb-shaped substrate with a catalytic coating layer.
    Type: Grant
    Filed: June 13, 2007
    Date of Patent: December 7, 2010
    Assignees: Toyota Jidosha Kabushiki Kaisha, Denso Corporation
    Inventors: Yusuke Itoh, Toshihiro Takada, Tatsuji Mizuno, Yoshiharu Miyake, Yoshihide Segawa
  • Patent number: 7820138
    Abstract: At least one basic precipitant selected from the group consisting of NaOH, KOH, NH4OH, NH3, NH4HCO3 and (NH4)2CO3 is added to an indium salt solution, which contains 0.1 to 3 M of indium, in an adding time of not longer than 24 hours, while the solution is maintained at a temperature of 5 to 95° C. until the equivalent of the basic precipitant reaches an equivalent of 0.5 to 3. Then, a precipitate obtained from the solution by a solid-liquid separation is dried and calcined at a temperature of 570 to 780° C. in an non-oxidizing atmosphere which contains ammonia gas and water vapor.
    Type: Grant
    Filed: March 15, 2006
    Date of Patent: October 26, 2010
    Assignee: Dowa Mining Co., Ltd.
    Inventors: Makoto Watanabe, Tatsumi Inamura, Yoshio Moteki
  • Publication number: 20100266485
    Abstract: A process comprises (a) combining (1) at least one base and (2) at least one metal carboxylate salt comprising (i) a metal cation selected from metal cations that form amphoteric metal oxides or oxyhydroxides and (ii) a lactate or thiolactate anion, or metal carboxylate salt precursors comprising (i) at least one metal salt comprising the metal cation and a non-interfering anion and (ii) lactic or thiolactic acid, a lactate or thiolactate salt of a non-interfering, non-metal cation, or a mixture thereof; and (b) allowing the base and the metal carboxylate salt or metal carboxylate salt precursors to react.
    Type: Application
    Filed: December 16, 2008
    Publication date: October 21, 2010
    Inventor: Timothy D. Dunbar
  • Patent number: 7754106
    Abstract: A release agent is flash evaporated and deposited onto a support substrate under conventional vapor-deposition conditions and a conductive metal oxide, such as ITO, is subsequently sputtered or deposited by reactive electron beam onto the resulting release layer in the same process chamber to form a very thin film of conductive material. The resulting multilayer product is separated from the support substrate, crushed to brake up the metal-oxide film into flakes, and heated or mixed in a solvent to separate the soluble release layer from the metallic flakes. Thus, by judiciously controlling the deposition of the ITO on the release layer, transparent flakes may be obtained with the desired optical and physical characteristics.
    Type: Grant
    Filed: June 7, 2006
    Date of Patent: July 13, 2010
    Assignee: Sigma Laboratories of Arizona, LLC
    Inventors: Michael G. Mikhael, Angelo Yializis
  • Patent number: 7741376
    Abstract: A dispersed ingredient having metal-oxygen bonds which is obtained by hydrolyzing a metal alkoxide in an organic solvent in the absence of an acid, a base, and/or a dispersion stabilizer, either with 0.5 to less than 1 mol of water per mol of the metal alkoxide or at ?20° C. or lower with 1.0 to less than 2.0 mol of water per mol of the metal alkoxide. In the organic solvent, the dispersed ingredient is stably dispersed without aggregating. Use of the dispersed ingredient enables a thin metal oxide film and a homogeneous organic/inorganic composite to be produced at a temperature as low as 200° C. or below.
    Type: Grant
    Filed: December 11, 2008
    Date of Patent: June 22, 2010
    Assignee: Nippon Soda Co., Ltd.
    Inventors: Motoyuki Toki, Akiji Higuchi, Nobuo Kimura, Yoshitaka Fujita
  • Patent number: 7727500
    Abstract: Disclosed are adhesive coating compositions containing a metal peroxide for producing clear colorless adhesive coatings on substrates, particularly micro particulate substrates. In one preferred embodiment the nanoparticle coatings are chemically active and function at a high level of efficiency due to the high total surface area of the micro particulate substrate. Also disclosed are coated substrates and compositions having nanoparticles bound to a substrate by the coating compositions.
    Type: Grant
    Filed: March 8, 2007
    Date of Patent: June 1, 2010
    Assignee: PURETI, Inc.
    Inventor: John W. Andrews
  • Publication number: 20100055016
    Abstract: Provided is a method of manufacturing oxide-based nano-structured materials using a chemical wet process, and thus, the method can be employed to manufacture oxide-based nano-structured materials having uniform composition and good electrical characteristics in large quantities, the method having a relatively simple process which does not use large growing equipment. The method includes preparing a first organic solution that comprises a metal, mixing the first organic solution with a second organic solution that contains hydroxyl radicals (—OH), filtering the mixed solution using a filter in order to extract oxide-based nano-structured materials formed in the mixed solution, drying the extracted oxide-based nano-structured materials to remove any remaining organic solution, and heat treating the dried oxide-based nano-structured materials.
    Type: Application
    Filed: February 1, 2008
    Publication date: March 4, 2010
    Inventors: Sang-Hyeob Kim, Hye-Jin Myoung, Sung-Lyul Maeng, G.A.J. Amaratunga, Sunyoung Lee
  • Patent number: 7638112
    Abstract: A method for making zinc aluminate nano-material, the method comprises the following steps. Firstly, providing a growing substrate and a growing device, and the growing device comprising a heating apparatus and a reacting room. Secondly, placing the growing substrate and a quantity of reacting materials into the reaction room, and the reacting materials comprising zinc and aluminum. Thirdly, introducing an oxygen-containing gas into the reaction room. Lastly, heating the reaction room to a temperature of 660˜1100° C.
    Type: Grant
    Filed: November 6, 2008
    Date of Patent: December 29, 2009
    Assignees: Tsinghua University, Hon Hai Precision Industry Co., Ltd.
    Inventors: Hai-Lin Sun, Kai-Li Jiang, Qun-Qing Li, Shou-Shan Fan
  • Patent number: 7615201
    Abstract: By using a halogen-free siloxane and an organometallic compound containing at least one metal other than silicon as feed stocks, and simultaneously atomizing and burning them in a flame, spherical particles of silica-containing compound oxide are prepared which are substantially halogen-free, consist of 0.5-99% by weight of metal oxides and the balance of silica, and have a particle size of 10 nm to 3 ?m. The particles are useful as a filler in epoxy resin base semiconductor sealants, a refractive index modifier or the like.
    Type: Grant
    Filed: July 23, 2002
    Date of Patent: November 10, 2009
    Assignee: Shin-Etsu Chemical Co., Ltd.
    Inventors: Yoshiharu Konya, Koichiro Watanabe, Susumu Ueno
  • Patent number: 7611631
    Abstract: The invention provides an indium adsorbent that can cause indium to be adsorbed, and a simple and inexpensive indium fractioning method for isolating and recovering high-purity indium from an acid solution whose primary component is hydrochloric acid and that contains indium. A primary component of the indium adsorbent is an anion-exchange resin that has a crosslinked structure produced by the copolymerization of styrene or acrylamide and divinylbenzene, and at least one of a quaternary ammonium group and a tertiary ammonium group, and that is provided with an acid-adsorbing ability. An acid solution whose primary component is hydrochloric acid and that includes indium is brought into contact with the anion-exchange resin to cause indium to be adsorbed to the anion-exchange resin.
    Type: Grant
    Filed: July 7, 2005
    Date of Patent: November 3, 2009
    Assignees: Aquatech Corporation, Sharp Kabushiki Kaisha
    Inventors: Akifusai Ohnishi, Nobuaki Fujiwara, Hideki Doi, Toyokazu Matsunami, Hiroshi Tsubota, Toshiaki Muratani, Shoji Nishikawa, Shinichi Yamasaki, Takamichi Honma
  • Patent number: 7611646
    Abstract: The oxide sintered body mainly consists of gallium, indium, and oxygen, and a content of the gallium is more than 65 at. % and less than 100 at. % with respect to all metallic elements, and the density of the sintered body is 5.0 g/cm3 or more. The oxide film is obtained using the oxide sintered body as a sputtering target, and the shortest wavelength of the light where the light transmittance of the film itself except the substrate becomes 50% is 320 nm or less. The transparent base material is obtained by forming the oxide film on one surface or both surfaces of a glass plate, a quartz plate, a resin plate or resin film where one surface or both surfaces are covered by a gas barrier film, or on one surface or both surfaces of a transparent plate selected from a resin plate or a resin film where the gas barrier film is inserted in the inside.
    Type: Grant
    Filed: November 27, 2006
    Date of Patent: November 3, 2009
    Assignee: Sumitomo Metal Mining Co., Ltd.
    Inventors: Tokuyuki Nakayama, Yoshiyuki Abe
  • Patent number: 7592065
    Abstract: There are disclosed insulated ultrafine powder comprising electroconductive ultrafine powder which is in the form of sphere, spheroid or acicular each having a minor axis in the range of 1 to 100 nm and an insulating film applied thereto; a process for producing the same which is capable of covering the surfaces of the insulated ultrafine powder with the insulating film having a thickness in the range of 0.3 to 100 nm without causing any clearance or vacancy; and a resin composite material which uses the same. A high dielectric constant of the material is assured by adding a small amount of insulated ultrafine powder wherein an insulating film is applied to the electroconductive ultrafine powder, while maintaining the processability and moldability that are the characteristics inherent in a resin material.
    Type: Grant
    Filed: February 13, 2004
    Date of Patent: September 22, 2009
    Assignee: Mitsubishi Gas Chemical Company Inc.
    Inventors: Takahiro Matsumoto, Toshiaki Yamada, Hirotaka Tsuruya
  • Patent number: 7582276
    Abstract: The invention relates to nanoscale rutile or oxide powder that is obtained by producing amorphous TiO2 by mixing an alcoholic solution with a titanium alcoholate and with an aluminum alcohalate and adding water and acid. The amorphous, aluminum-containing TiO2 is isolated by removing the solvent, and is redispersed in water in the presence of a tin salt. Thermal or hydrothermal post-processing yields rutile or oxide that can be redispersed to primary particle size. The n-rutile or the obtained oxide having a primary particle size ranging between 5 and 20 nm can be incorporated into all organic matrices so that they remain transparent. Photocatalytic activity is suppressed by lattice doping with trivalent ions. If the amorphous precursor is redispersed in alcohol, or not isolated, but immediately crystallized, an anatase is obtained that can be redispersed to primary particle size.
    Type: Grant
    Filed: August 30, 2002
    Date of Patent: September 1, 2009
    Assignee: ITN Nanovation AG
    Inventor: Ralph Nonninger
  • Patent number: 7576035
    Abstract: A pillar-shaped honeycomb structure has a plurality of cells longitudinally placed in parallel with one another with a wall portion therebetween, wherein the honeycomb structure mainly includes inorganic fibers which form the honeycomb structure without lamination interfaces.
    Type: Grant
    Filed: April 7, 2008
    Date of Patent: August 18, 2009
    Assignee: Ibiden Co., Ltd.
    Inventors: Kazushige Ohno, Tomokazu Oya
  • Publication number: 20090202427
    Abstract: Process for preparing mixed metal oxide powders Abstract Process for preparing a mixed metal oxide powder, in which oxidizable starting materials are evaporated in an evaporation zone of a reactor and oxidized in the vaporous state in an oxidation zone of this reactor, the reaction mixture is cooled after the reaction and the pulverulent solids are removed from gaseous substances, wherein at least one pulverulent metal, together with one or more combustion gases, is fed to the evaporation zone, the metal is evaporated completely in the evaporation zone under nonoxidizing conditions, an oxygen-containing gas and at least one metal compound are fed, separately or together, in the oxidation zone to the mixture flowing out of the evaporation zone, the oxygen content of the oxygen-containing gas being at least sufficient to oxidize the metal, the metal compound and the combustion gas completely.
    Type: Application
    Filed: May 16, 2007
    Publication date: August 13, 2009
    Applicant: EVONIK DEGUSSA GMBH
    Inventors: Stipan Katusic, Guido Zimmermann, Michael Krämer, Horst Miess, Edwin Staab
  • Patent number: 7572423
    Abstract: The invention provides a process for producing fumed metal oxide particles comprising providing a stream of a liquid feedstock comprising a volatizable, non-halogenated metal oxide precursor, providing a stream of a combustion gas having a linear velocity sufficient to atomize and combust or pyrolyze the liquid feedstock, and injecting the stream of the liquid feedstock into the stream of combustion gas to form a reaction mixture such that the liquid feedstock is atomized and subjected to a sufficient temperature and residence time in the combination gas stream for fumed metal oxide particles to form before the combustion gas temperature is reduced below the solidifying temperature of the metal oxide particle. The invention further provides fumed silica particles having a relatively small aggregate size and/or narrow aggregate size distribution.
    Type: Grant
    Filed: November 24, 2003
    Date of Patent: August 11, 2009
    Assignee: Cabot Corporation
    Inventor: Yakov E. Kutsovsky
  • Patent number: 7553474
    Abstract: It is an object to provide a method for producing stable alkaline metal oxide sols having a uniform particle size distribution. The method comprises the steps of: heating a metal compound at a temperature of 60° C. to 110° C. in an aqueous medium that contains a carbonate of quaternary ammonium; and carrying out hydrothermal processing at a temperature of 110° C. to 250° C. The carbonate of quaternary ammonium is (NR4)2CO3 or NR4HCO3 in which R represents a hydrocarbon group, or a mixture thereof. The metal compound is one, or two or more metal compounds selected from a group of compounds based on a metal having a valence that is bivalent, trivalent, or tetravalent.
    Type: Grant
    Filed: August 8, 2005
    Date of Patent: June 30, 2009
    Assignee: Nissan Chemical Industries, Ltd.
    Inventors: Yutaka Ohmori, Hirokazu Kato, Yoshinari Koyama, Kenji Yamaguchi
  • Publication number: 20090162274
    Abstract: A method for preparing metal oxide particles having a primary particle size on the order of nanometers is provided. The method comprises subjecting a metal ion present in an aqueous solution and an amino alcohol to an initial stage of reaction with each other at normal temperatures under normal pressures for a given time, and adding at least once either of a metal ion or an amino alcohol or both thereof to the resulting reaction system for carrying out a subsequent stage of reaction for a given time wherein total amounts of the metal ion and the amino alcohol are such that the amino alcohol is used in the range of not less than a molar equivalent to the metal ion.
    Type: Application
    Filed: December 18, 2008
    Publication date: June 25, 2009
    Applicant: DENSO CORPORATION
    Inventors: Hiroaki Yotou, Miho Itoh
  • Publication number: 20090123354
    Abstract: A solid material is presented for the partial oxidation of natural gas. The solid material includes a solid oxygen carrying agent and a hydrocarbon activation agent. The material precludes the need for gaseous oxygen for the partial oxidation and provides better control over the reaction.
    Type: Application
    Filed: November 14, 2007
    Publication date: May 14, 2009
    Inventors: Deng-Yang Jan, Joel T. Walenga, Kurt M. Vanden Bussche, Joseph A. Kocal, Lisa M. King
  • Patent number: 7488464
    Abstract: Methods and systems for processing metal oxides from metal containing solutions. Metal containing solutions are mixed with heated aqueous oxidizing solutions and processed in a continuous process reactor or batch processing system. Combinations of temperature, pressure, molarity, Eh value, and pH value of the mixed solution are monitored and adjusted so as to maintain solution conditions within a desired stability area during processing. This results in metal oxides having high or increased pollutant loading capacities and/or oxidation states. These metal oxides may be processed according to the invention to produce co-precipitated oxides of two or more metals, metal oxides incorporating foreign cations, metal oxides precipitated on active and inactive substrates, or combinations of any or all of these forms.
    Type: Grant
    Filed: July 28, 2004
    Date of Patent: February 10, 2009
    Assignee: EnviroScrub Technologies Corporation
    Inventors: Charles F. Hammel, Richard M. Boren
  • Patent number: 7449235
    Abstract: An aqueous alkaline solution containing a tin salt dissolved therein is mixed with a zinc compound, and an aqueous solution of an indium salt is added to the mixture. The resultant hydroxide or hydrate containing tin, indium and zinc is treated by heating at a temperature of 110 to 300° C. in the present of water. Then, the resultant product is filtered, dried and treated by heating at a temperature of 300 to 1,000° C. in an air and further reduced at a temperature of 150 to 400° C. under a reducing atmosphere to obtain composite indium oxide particles of zinc oxide and tin-containing indium oxide, which have an average particle size of 5 to 100 nm. The resultant composite particles of zinc oxide and tin-containing indium oxide are suitably used to form a transparent conductive coating film having a UV-shielding effect.
    Type: Grant
    Filed: March 31, 2004
    Date of Patent: November 11, 2008
    Assignee: Hitachi Maxell, Ltd.
    Inventors: Yuko Sawaki, Mikio Kishimoto
  • Publication number: 20080260612
    Abstract: Multi-step metal compound oxidation process to produce compounds and enhanced metal oxides from various source materials, e.g. metal sulfides, carbides, nitrides and other metal containing materials with metal oxides from secondary reaction steps being utilized as an oxidation agent in the first reactions.
    Type: Application
    Filed: April 18, 2008
    Publication date: October 23, 2008
    Applicant: Orchard Material Technology, LLC
    Inventor: Lawrence F. McHugh
  • Patent number: 7438882
    Abstract: A method of forming a gel and/or powder of a metallic oxide, metalloid oxide and/or a mixed oxide or resin thereof from one or more respective organometallic liquid precursor(s) and/or organometalloid liquid precursor(s) by oxidatively treating said liquid in a non-thermal equilibrium plasma discharge and/or an ionised gas stream resulting therefrom and collecting the resulting product. The non-thermal equilibrium plasma is preferably atmospheric plasma glow discharge, continuous low pressure glow discharge plasma, low pressure pulse plasma or direct barrier discharge. The metallic oxides this invention particularly relates to are those in columns 3a and 4a of the periodic table namely, aluminium, gallium, indium, tin and lead and the transition metals. The metalloids may be selected from boron, silicon, germanium, arsenic, antimony and tellurium.
    Type: Grant
    Filed: April 8, 2003
    Date of Patent: October 21, 2008
    Assignee: Dow Corning Ireland Limited
    Inventors: Andrew James Goodwin, Stuart Leadley, Pierre Chevalier, Bhukandas Parbhoo
  • Publication number: 20080233030
    Abstract: Process for manufacturing an electrochemical device including a cathode, an anode and at least one electrolyte membrane disposed between the anode and the cathode, wherein at least one of the cathode, the anode and the electrolyte membrane, contains at least a ceramic material.
    Type: Application
    Filed: March 30, 2004
    Publication date: September 25, 2008
    Applicant: PIRELLI & C.S.P.A.
    Inventors: Agustin Sin Xicola, A. Yuri Dubitsky, Enrico Albizzati, Evgeny Kopnin, Elena Roda
  • Patent number: 7374743
    Abstract: Mixed oxide powder containing indium and tin, with a proportion of indium oxide of between 90 and 98 wt. % and a BET surface area of 40 to 120 m2/g, which is in the form of aggregates having an average circumference of less than 500 nm, consists of at least 95% of an indium oxide phase and displays an oxygen content that is lower than the content that theoretically results from In2O3 and SnO2. It is produced by mixing a solution of an indium compound with a solution of a tin compound, atomising this mixture of solutions, pyrolysing the atomised mixture of solutions in a first zone of a reactor and in a second zone of the reactor, following pyrolysis, adding reducing gases to the pyrolysed mixture at one or more points in a quantity such that overall a reducing atmosphere is established in this second zone, and separating the resulting solid from the waste gases in a further, third zone, in which a reducing atmosphere likewise still prevails.
    Type: Grant
    Filed: March 5, 2004
    Date of Patent: May 20, 2008
    Assignee: Degussa AG
    Inventors: Stipan Katusic, Guenther Michael, Peter Kress, Andreas Gutsch, Friedrich Georg Schmidt, Thomas Hasskerl
  • Patent number: 7368067
    Abstract: A p-type ZnO semiconductor film comprised mainly of Zn and O elements is disclosed. The film is characterized as containing an alkali metal and nitrogen. Preferably, the alkali metal is contained such that its concentration is distributed to increase toward an end or toward both ends in the thickness direction of the film. More preferably, the alkali metal is contained in the concentration range of 1×1018-5×1021 cm?3 and the nitrogen in the concentration range of 2×1017-5×1020 cm?3.
    Type: Grant
    Filed: January 26, 2005
    Date of Patent: May 6, 2008
    Assignee: Sanyo Electric Co., Ltd.
    Inventors: Shigeo Yata, Kenichiro Wakisaka, Takeshi Kobayashi
  • Patent number: 7357910
    Abstract: Method for producing metal oxide nanoparticles. The method includes generating an aerosol of solid metallic microparticles, generating plasma with a plasma hot zone at a temperature sufficiently high to vaporize the microparticles into metal vapor, and directing the aerosol into the hot zone of the plasma. The microparticles vaporize in the hot zone into metal vapor. The metal vapor is directed away from the hot zone and into the cooler plasma afterglow where it oxidizes, cools and condenses to form solid metal oxide nanoparticles.
    Type: Grant
    Filed: July 15, 2002
    Date of Patent: April 15, 2008
    Assignee: Los Alamos National Security, LLC
    Inventors: Jonathan Phillips, Daniel Mendoza, Chun-Ku Chen
  • Patent number: 7276224
    Abstract: Methods of producing nanoporous particles by spray pyrolysis of a precursor composition including a reactive precursor salt and a nonreactive matrix salt are provided, wherein the matrix salt is used as a templating medium. Nanoporous aluminum oxide particles produced by the methods are also provided.
    Type: Grant
    Filed: June 11, 2002
    Date of Patent: October 2, 2007
    Assignee: Regents of the University of Minnesota
    Inventors: Michael R. Zachariah, Benjamin Y. H. Liu
  • Patent number: 7205063
    Abstract: A lanthanum gallate-based sintered body comprises a base material formed of lanthanum gallate-based oxide, and grains having a K2NiF4 structure and/or grains having a layered perovskite structure are dispersed into the base material. Consequently, the lanthanum gallate-based sintered body has a high mechanical strength and is excellent in thermal resistance. Further, a SOFC having excellent properties can be obtained by using the lanthanum gallate-based sintered body as the solid electrolyte.
    Type: Grant
    Filed: June 19, 2003
    Date of Patent: April 17, 2007
    Assignee: Nissan Motor Co., Ltd.
    Inventors: Kenji Furuya, Masaharu Hatano, Kazunori Fujii
  • Patent number: 7138098
    Abstract: A method of manufacturing a nanocrystallite from a M-containing salt forms a nanocrystallite. The nanocrystallite can be a member of a population of nanocrystallites having a narrow size distribution and can include one or more semiconductor materials. Semiconducting nanocrystallites can photoluminesce and can have high emission quantum efficiencies.
    Type: Grant
    Filed: October 8, 2004
    Date of Patent: November 21, 2006
    Assignee: Massachusetts Institute of Technology
    Inventors: Moungi Bawendi, Nathan E. Stott
  • Patent number: 7122168
    Abstract: In a metal oxide nanoparticle and a synthetic method thereof, and in particular to maghemite (?-Fe2O3) nanoparticles usable as a superhigh density magnetic recording substance by having good shape anisotropy and magnetic characteristics, hematite (?-Fe2O3) nanoparticles usable as a precursor to the maghemite or a catalyst, maghemite and hematite-mixed nanoparticles and a synthetic method thereof, the method for synthesizing metal oxide nanoparticles includes forming a reverse micelle solution by adding distilled water, a surfactant and a solvent to metallic salt not less than trivalent, precipitating and separating gel type amorphous metal oxide particles by adding proton scavenger to the reverse micelle solution; adjusting a molar ratio of metal oxide to the surfactant by washing the gel type amorphous metal oxide particles with a polar solvent; and crystallizing metal oxide nanoparticles through heating or reflux after dispersing the gel type amorphous metal oxide particles in a non-polar solvent having a h
    Type: Grant
    Filed: October 1, 2003
    Date of Patent: October 17, 2006
    Assignee: Korea Institute of Science and Technology
    Inventors: Kyoungja Woo, Jae-Pyoung Ahn, Hae-Weon Lee
  • Patent number: 7118727
    Abstract: The present invention provides a process for producing particles, such as oxide nanoparticles, in a substantially water-free environment. The process involves mixing at least one metal compound of the formula MX(m?n) with at least one surfactant and at least one solvent, wherein M is an electropositive element of Groups 1–15; each X is independently selected from the group consisting of O1/2, F, Cl, Br, I, OR, O2CR, NR2, and R; each R is independently a hydrocarbyl group; n is equal to ½ the oxidation state of the metal M in the product particle; and m is equal to the oxidation state of the element M. The components are typically combined to form a mixture which is thermally treated for a time period sufficient to convert the metal compound into particles of the corresponding oxide, having sizes in a range between about 0.5 nanometer and about 1000 nanometers.
    Type: Grant
    Filed: June 16, 2003
    Date of Patent: October 10, 2006
    Assignee: General Electric Company
    Inventor: Darryl Stephen Williams
  • Patent number: 7115219
    Abstract: A method of producing an Indium Tin Oxide powder is described. A method of producing an Indium Tin Oxide powder comprising the steps of: (1) mixing a raw aqueous solution containing indium ions and tin ions and having a proportion of divalent tin ions in the tin ions of 50 wt % or more with an alkali aqueous solution, (2) separating the product into solid and liquid, and (3) calcinating the resulted solid.
    Type: Grant
    Filed: September 8, 2003
    Date of Patent: October 3, 2006
    Assignee: Sumitomo Chemical Company, Limited
    Inventors: Takeshi Hattori, Shinji Fujiwara, Kunio Saegusa
  • Patent number: 6984369
    Abstract: Disclosed is a process for making surfactant capped nanocrystals of metal oxides which are dispersable in organic solvents. The process comprises decomposing a metal cupferron complex of the formula MXCupX, wherein M is a metal, and Cup is a N-substituted N-Nitroso hydroxylamine, in the presence of a coordinating surfactant, the reaction being conducted at a temperature ranging from about 150 to about 400° C., for a period of time sufficient to complete the reaction. Also disclosed are compounds made by the process.
    Type: Grant
    Filed: November 22, 2000
    Date of Patent: January 10, 2006
    Assignee: The Regents of the University of California
    Inventors: A. Paul Alivisatos, Joerg Rockenberger
  • Patent number: 6908574
    Abstract: A Sn-containing In oxide in the form of needles or plates comprising particles having a major axis of 0.1 ?m or less and a minor axis of 0.05 ?m or less.
    Type: Grant
    Filed: March 28, 2002
    Date of Patent: June 21, 2005
    Assignee: Dowa Mining Co., Ltd.
    Inventors: Tatsumi Inamura, Yoshio Moteki, Yoshichika Horikawa, Kohichiro Eshima
  • Patent number: 6841497
    Abstract: The invention relates to the field of technical ceramics and specifically relates to a method of synthesis for aluminum oxides of different crystalline structure and to the products obtained by the method. The aim of the invention is to provide a method of producing redispersible nanoparticulate corundum and nanoporous Al2O3 sintered products, the method using precursors and being viable on a commercial scale. To this aim, inter alia, a method of producing redispersible nanoparticulate corundum of an average particle size of D50<100 nm is used which method includes the addition of crystal nuclei. According to the method, organic or chlorine-free inorganic precursors are dissolved or processed to a sol and hydrolyzed. The substance is then dried and calcinated at temperatures of between 350 and 650° C. and is then further heated by increasing the temperature to ?950° C.
    Type: Grant
    Filed: April 21, 2000
    Date of Patent: January 11, 2005
    Assignee: Fraunhofer-Gesellschaft zur Foerderung der Angewandten Forschung E.V.
    Inventors: Andreas Krell, Hongwei Ma
  • Publication number: 20040219087
    Abstract: A metal oxide powder except &agr;-alumina, comprising polyhedral particles having at least 6 planes each, a number average particle size of from 0.1 to 300 &mgr;m, and a D90/D10 ratio of 10 or less where D10 and D90 are particle sizes at 10% and 90% accumulation, respectively from the smallest particle size side in a cumulative particle size curve of the particles. This metal oxide powder contains less agglomerated particles, and has a narrow particle size distribution and a uniform particle shape.
    Type: Application
    Filed: June 27, 2001
    Publication date: November 4, 2004
    Inventors: Masahide Mohri, Hironobu Koike, Shinichiro Tanaka, Tetsu Umeda, Hisashi Watanabe, Kunio Saegusa, Akira Hasegawa
  • Patent number: 6811760
    Abstract: Acicular bodies of a metal compound are produced by slowly precipitating an organic salt of the metal from a solution of an ester of a dicarboxylic acid having 1-5 carbon atoms and firing the precipitate in an oxidizing atmosphere. These acicular bodies have a cross-sectional dimension less than about 20 &mgr;m and are useful for providing reinforcement of a larger ceramic body. Acicular bodies of rare-earth metal oxides also are useful in reinforcing x-ray scintillator bodies without diminishing their luminescent capacity.
    Type: Grant
    Filed: March 30, 2001
    Date of Patent: November 2, 2004
    Assignee: General Electric Company
    Inventors: James Scott Vartuli, Venkat Subramaniam Venkataramani
  • Patent number: 6787069
    Abstract: A compound obtained by incorporating atoms Cz into vacant lattice points of a crystal represented by the general formula AxBy (wherein A is a cation; B is an anion; and x and y satisfy an electrically neutral stoichiometric ratio) while controlling the introduction with respect to position and/or concentration (C is an atom capable of forming an ion which has an arbitrary valence and is introduced into a vacant lattice point of the crystal of the compound AxBy; and z is from 0 to the number corresponding to the concentration of vacant lattice points in AxBy).
    Type: Grant
    Filed: September 21, 2001
    Date of Patent: September 7, 2004
    Assignee: Japan Science and Technology Agency
    Inventors: Shigemi Kohiki, Ryuta Kiyoshima, Shigenori Matsushima, Masakuni Sasaki
  • Patent number: 6780393
    Abstract: A method of producing fine particles of an oxide of a metal, comprising the steps of: preparing an acidic solution which contains ions of the metal; precipitating fine particles of a hydroxide of the metal by adding an alkaline solution to the acidic solution; collecting the fine particles of the hydroxide of the metal precipitated in a mixed solution of the acidic solution and the alkaline solution; mixing fine particles of a carbon with the collected fine particles of the hydroxide of the metal; and heat-treating a mixture of the fine particles of the hydroxide of the metal and the fine particles of the carbon at a predetermined temperature in a non-reducing atmosphere, whereby the fine particles of the oxide of the metal are produced.
    Type: Grant
    Filed: December 14, 2001
    Date of Patent: August 24, 2004
    Assignees: National Institute of Advanced Industrial Science and Technology, Noritake Co., Limited
    Inventors: Norimitsu Murayama, Woosuck Shin, Sumihito Sago, Makiko Hayashi
  • Patent number: 6773636
    Abstract: There are provided: (1) a process for producing an InSbO4-containing transparent electroconductive film, which comprises the step of sputtering simultaneously: (i) a target (A) for sputtering, which comprises In, Sb and O, and whose atomic ratio of Sb/In is from 0.9 to 1.1, and (ii) a target (B) for sputtering, which comprises Sb, (2) a transparent eletroconductive film, which contains In, Sb and O, and whose atomic ratio of Sb/In is from 0.8 to 1.5, and (3) a target for sputtering, which contains In, Sb and O, and whose atomic ratio of Sb/In is from 1.2 to 2.0.
    Type: Grant
    Filed: March 22, 2002
    Date of Patent: August 10, 2004
    Assignee: Sumitomo Chemical Company, Limited
    Inventors: Takeshi Hattori, Kunio Saegusa, Yuzo Shigesato
  • Patent number: 6753099
    Abstract: The present invention provides a green emitting phosphor which includes an excess of the ordinary SiO2 component included in parent material Y2−2xSiO5 activated by Tb in terms of stoichiometric ratio. The composition of the above phosphor is represented by chemical formula: {(Y1−y−zMyGdz)1−xTbx}2(Si1−bGebO2)1+aO3 where values of x, y, z, a, and b are assigned, subject to 0<x≦1, 0≦y≦1, 0≦z≦1, 0<a≦1, and 0≦b≦1, and M is at least one element selected from a group comprising Sc, In, La, Lu, Yb, Ce, Eu, Sm, Tm, Ho, Er, and Nd. By using this phosphor, phosphors that emit light of higher luminance with less luminance degradation and are suitable for high-quality image display and imaging devices producing high-quality images are obtained.
    Type: Grant
    Filed: June 27, 2002
    Date of Patent: June 22, 2004
    Assignees: Hitachi, Ltd., Hitachi Device Engineering Co., Ltd., Kasei Optonix, Ltd.
    Inventors: Shin Imamura, Masatoshi Shiiki, Masaaki Komatsu, Hidetsugu Matsukiyo, Yoshihiro Koseki, Takashi Hase, Tsutomu Yamada
  • Publication number: 20040105810
    Abstract: The present invention relates generally to metal oxide materials with varied symmetrical nanostructure morphologies. In particular, the present invention provides metal oxide materials comprising one or more metallic oxides with three-dimensionally ordered nanostructural morphologies, including hierarchical morphologies. The present invention also provides methods for producing such metal oxide materials.
    Type: Application
    Filed: September 11, 2003
    Publication date: June 3, 2004
    Inventors: Zhifen Ren, J.Y. Lao, Debasish Banerjee
  • Patent number: 6737376
    Abstract: Porous ceramics are described, which are produced by a) mixing an aqueous solution of a suitable ionotropically orientable polyanion, either with oxides, hydroxides or hydrated oxides, which are present in the form of a sol, of the metals Al, Zr, Ti and Nb, or with finely crystalline oxides, hydroxides or hydrated oxides, which are present in suspension, of these metals, or with finely crystalline tricalcium phosphate or apatite which are present in suspension, b) bringing the mixed sol obtained as in a) or the suspension obtained as in a) into contact with a solution of a salt of a di- or trivalent metal cation in order to produce an ionotropic gel body, c) compacting the gel body by introducing it into electrolyte solutions which further enhance the syneresis of the polyelectrolyte which was originally formed, d) washing the gel body with water and subsequently impregnating it with a readily volatile, water-miscible solvent, e) freeing the anhydrous gel body or gel bodies obtained as in d) from the
    Type: Grant
    Filed: June 8, 2001
    Date of Patent: May 18, 2004
    Inventors: Klaus Heckmann, Thomas Wenger
  • Patent number: 6680130
    Abstract: A dielectric material having a high dielectric constant includes a Group III metal oxide and a Group V element. The incorporation of the Group V element in the Group III metal oxide material reduces the number of structural defects in the dielectric material, and reduces both the fixed charge density and the conduction current of the dielectric material.
    Type: Grant
    Filed: May 28, 2002
    Date of Patent: January 20, 2004
    Assignee: Agere Systems, Inc.
    Inventors: Lalita Manchanda, Martin Laurence Green
  • Publication number: 20030178752
    Abstract: In2O3 powder, a method for preparing the In2O3 powder, and a method for manufacturing an indium tin oxide (ITO) target using the In2O3 powder. In the method for preparing the In2O3 powder, an alkaline precipitate is added to an indium solution having an indium ion concentration of about 2-5 M at a rate of about 0.5-4 L/min while the pH of the indium solution is adjusted to about 5-9, to form an In(OH)3 precipitate. Next, the precipitate is precipitated at a temperature of between about 600 to 1,100C. to produce the In2O3 powder. The In2O3 powder having a surface area of between about 5 to 18 m2/g and an average particle diameter of between about 40 to 160 nm is obtained. The In2O3 powder is applicable to form an ITO target for a high-quality, transparent electrode for a display, such as a liquid crystal display, electroluminescent display, or field emission display.
    Type: Application
    Filed: December 17, 2002
    Publication date: September 25, 2003
    Inventors: Kyong-Hwa Song, Sang-Cheol Park, Jung-Gyu Nam
  • Patent number: 6623662
    Abstract: A two-layer coating for the outer surface of the display screen of a color cathode ray tube (CRT) includes an inner carbon black-based layer and an outer silica-based layer. The inner layer is antistatic, while the outer layer is antireflective. To compensate for the increased absorption of blue light by the carbon black particles, which results in a color video image having a yellowish tint, a blue additive, such as a pigment or dye, is added to the coating to adjust its light absorbance characteristics and provide uniform light absorbance over the entire visible spectrum of 400-700 nm for improved color video image presentation.
    Type: Grant
    Filed: May 23, 2001
    Date of Patent: September 23, 2003
    Assignee: Chunghwa Picture Tubes, Ltd.
    Inventors: Kuo-Chu Wang, Chun-Min Hu
  • Patent number: 6579475
    Abstract: The present invention includes lithium cobalt oxides having hexagonal layered crystal structures and methods of making same. The lithium cobalt oxides of the invention have the formula LiwCo1−xAxO2+y wherein 0.96≦w≦1.05, 0≦x≦0.05, −0.02≦y≦0.02 and A is one or more dopants. The lithium cobalt oxides of the invention preferably have a position within the principal component space defined by the relationship axi+byi≦c, wherein xi={right arrow over (S)}i&Circlesolid;{right arrow over (P)}c1; yi={right arrow over (S)}i&Circlesolid;{right arrow over (P)}c2; the vector {right arrow over (S)}i is the x-ray spectrum for the LiwCo1−xAxO2+y compound; the vectors {right arrow over (P)}c1 and {right arrow over (P)}c2 defining the principal component space are determined by measuring the x-ray powder diffraction values {right arrow over (S)}i between 15° and 120° using a 0.
    Type: Grant
    Filed: December 7, 2000
    Date of Patent: June 17, 2003
    Assignee: FMC Corporation
    Inventors: Yuan Gao, Marina Yakovleva, John L. Burba, III, John F. Engel