Group Iiia Metal Or Beryllium (al, Ga, In, Tl, Or Be) Patents (Class 423/624)
- Utilizing acid (Class 423/626)
- Reacting metallic aluminum with water or water vapor (Class 423/627)
- Forming catalyst, sorbent activated, or narrow pore alumina (Class 423/628)
- Hydroxide (Class 423/629)
- Utilizing carbon or compound thereof as reactant (Class 423/630)
- Utilizing nitrogenous compound as reactant (Class 423/631)
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Publication number: 20110003085Abstract: 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: ApplicationFiled: September 7, 2010Publication date: January 6, 2011Applicant: CARRIER CORPORATIONInventors: Treese Hugener-Campbell, Thomas Henry Vanderspurt, Wayde R. Schmidt, Steven M. Zhitnik
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Publication number: 20100324346Abstract: 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: ApplicationFiled: January 30, 2009Publication date: December 23, 2010Applicant: IFP ENERGIES NOUVELLESInventors: Anne Claire Dubreuil, Lars Fischer, Bernadette Rebours, Renaud Revel, Cecile Thomazeau
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Patent number: 7846868Abstract: 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: GrantFiled: June 13, 2007Date of Patent: December 7, 2010Assignees: Toyota Jidosha Kabushiki Kaisha, Denso CorporationInventors: Yusuke Itoh, Toshihiro Takada, Tatsuji Mizuno, Yoshiharu Miyake, Yoshihide Segawa
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Patent number: 7820138Abstract: 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: GrantFiled: March 15, 2006Date of Patent: October 26, 2010Assignee: Dowa Mining Co., Ltd.Inventors: Makoto Watanabe, Tatsumi Inamura, Yoshio Moteki
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Publication number: 20100266485Abstract: 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: ApplicationFiled: December 16, 2008Publication date: October 21, 2010Inventor: Timothy D. Dunbar
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Patent number: 7754106Abstract: 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: GrantFiled: June 7, 2006Date of Patent: July 13, 2010Assignee: Sigma Laboratories of Arizona, LLCInventors: Michael G. Mikhael, Angelo Yializis
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Patent number: 7741376Abstract: 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: GrantFiled: December 11, 2008Date of Patent: June 22, 2010Assignee: Nippon Soda Co., Ltd.Inventors: Motoyuki Toki, Akiji Higuchi, Nobuo Kimura, Yoshitaka Fujita
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Patent number: 7727500Abstract: 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: GrantFiled: March 8, 2007Date of Patent: June 1, 2010Assignee: PURETI, Inc.Inventor: John W. Andrews
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Publication number: 20100055016Abstract: 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: ApplicationFiled: February 1, 2008Publication date: March 4, 2010Inventors: Sang-Hyeob Kim, Hye-Jin Myoung, Sung-Lyul Maeng, G.A.J. Amaratunga, Sunyoung Lee
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Patent number: 7638112Abstract: 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: GrantFiled: November 6, 2008Date of Patent: December 29, 2009Assignees: Tsinghua University, Hon Hai Precision Industry Co., Ltd.Inventors: Hai-Lin Sun, Kai-Li Jiang, Qun-Qing Li, Shou-Shan Fan
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Patent number: 7615201Abstract: 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: GrantFiled: July 23, 2002Date of Patent: November 10, 2009Assignee: Shin-Etsu Chemical Co., Ltd.Inventors: Yoshiharu Konya, Koichiro Watanabe, Susumu Ueno
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Patent number: 7611631Abstract: 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: GrantFiled: July 7, 2005Date of Patent: November 3, 2009Assignees: Aquatech Corporation, Sharp Kabushiki KaishaInventors: Akifusai Ohnishi, Nobuaki Fujiwara, Hideki Doi, Toyokazu Matsunami, Hiroshi Tsubota, Toshiaki Muratani, Shoji Nishikawa, Shinichi Yamasaki, Takamichi Honma
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Patent number: 7611646Abstract: 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: GrantFiled: November 27, 2006Date of Patent: November 3, 2009Assignee: Sumitomo Metal Mining Co., Ltd.Inventors: Tokuyuki Nakayama, Yoshiyuki Abe
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Patent number: 7592065Abstract: 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: GrantFiled: February 13, 2004Date of Patent: September 22, 2009Assignee: Mitsubishi Gas Chemical Company Inc.Inventors: Takahiro Matsumoto, Toshiaki Yamada, Hirotaka Tsuruya
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Patent number: 7582276Abstract: 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: GrantFiled: August 30, 2002Date of Patent: September 1, 2009Assignee: ITN Nanovation AGInventor: Ralph Nonninger
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Patent number: 7576035Abstract: 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: GrantFiled: April 7, 2008Date of Patent: August 18, 2009Assignee: Ibiden Co., Ltd.Inventors: Kazushige Ohno, Tomokazu Oya
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Publication number: 20090202427Abstract: 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: ApplicationFiled: May 16, 2007Publication date: August 13, 2009Applicant: EVONIK DEGUSSA GMBHInventors: Stipan Katusic, Guido Zimmermann, Michael Krämer, Horst Miess, Edwin Staab
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Patent number: 7572423Abstract: 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: GrantFiled: November 24, 2003Date of Patent: August 11, 2009Assignee: Cabot CorporationInventor: Yakov E. Kutsovsky
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Patent number: 7553474Abstract: 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: GrantFiled: August 8, 2005Date of Patent: June 30, 2009Assignee: Nissan Chemical Industries, Ltd.Inventors: Yutaka Ohmori, Hirokazu Kato, Yoshinari Koyama, Kenji Yamaguchi
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Publication number: 20090162274Abstract: 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: ApplicationFiled: December 18, 2008Publication date: June 25, 2009Applicant: DENSO CORPORATIONInventors: Hiroaki Yotou, Miho Itoh
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Publication number: 20090123354Abstract: 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: ApplicationFiled: November 14, 2007Publication date: May 14, 2009Inventors: Deng-Yang Jan, Joel T. Walenga, Kurt M. Vanden Bussche, Joseph A. Kocal, Lisa M. King
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Patent number: 7488464Abstract: 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: GrantFiled: July 28, 2004Date of Patent: February 10, 2009Assignee: EnviroScrub Technologies CorporationInventors: Charles F. Hammel, Richard M. Boren
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Patent number: 7449235Abstract: 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: GrantFiled: March 31, 2004Date of Patent: November 11, 2008Assignee: Hitachi Maxell, Ltd.Inventors: Yuko Sawaki, Mikio Kishimoto
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Publication number: 20080260612Abstract: 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: ApplicationFiled: April 18, 2008Publication date: October 23, 2008Applicant: Orchard Material Technology, LLCInventor: Lawrence F. McHugh
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Patent number: 7438882Abstract: 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: GrantFiled: April 8, 2003Date of Patent: October 21, 2008Assignee: Dow Corning Ireland LimitedInventors: Andrew James Goodwin, Stuart Leadley, Pierre Chevalier, Bhukandas Parbhoo
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Publication number: 20080233030Abstract: 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: ApplicationFiled: March 30, 2004Publication date: September 25, 2008Applicant: PIRELLI & C.S.P.A.Inventors: Agustin Sin Xicola, A. Yuri Dubitsky, Enrico Albizzati, Evgeny Kopnin, Elena Roda
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Patent number: 7374743Abstract: 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: GrantFiled: March 5, 2004Date of Patent: May 20, 2008Assignee: Degussa AGInventors: Stipan Katusic, Guenther Michael, Peter Kress, Andreas Gutsch, Friedrich Georg Schmidt, Thomas Hasskerl
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Patent number: 7368067Abstract: 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: GrantFiled: January 26, 2005Date of Patent: May 6, 2008Assignee: Sanyo Electric Co., Ltd.Inventors: Shigeo Yata, Kenichiro Wakisaka, Takeshi Kobayashi
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Patent number: 7357910Abstract: 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: GrantFiled: July 15, 2002Date of Patent: April 15, 2008Assignee: Los Alamos National Security, LLCInventors: Jonathan Phillips, Daniel Mendoza, Chun-Ku Chen
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Patent number: 7276224Abstract: 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: GrantFiled: June 11, 2002Date of Patent: October 2, 2007Assignee: Regents of the University of MinnesotaInventors: Michael R. Zachariah, Benjamin Y. H. Liu
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Patent number: 7205063Abstract: 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: GrantFiled: June 19, 2003Date of Patent: April 17, 2007Assignee: Nissan Motor Co., Ltd.Inventors: Kenji Furuya, Masaharu Hatano, Kazunori Fujii
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Patent number: 7138098Abstract: 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: GrantFiled: October 8, 2004Date of Patent: November 21, 2006Assignee: Massachusetts Institute of TechnologyInventors: Moungi Bawendi, Nathan E. Stott
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Patent number: 7122168Abstract: 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 hType: GrantFiled: October 1, 2003Date of Patent: October 17, 2006Assignee: Korea Institute of Science and TechnologyInventors: Kyoungja Woo, Jae-Pyoung Ahn, Hae-Weon Lee
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Patent number: 7118727Abstract: 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: GrantFiled: June 16, 2003Date of Patent: October 10, 2006Assignee: General Electric CompanyInventor: Darryl Stephen Williams
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Patent number: 7115219Abstract: 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: GrantFiled: September 8, 2003Date of Patent: October 3, 2006Assignee: Sumitomo Chemical Company, LimitedInventors: Takeshi Hattori, Shinji Fujiwara, Kunio Saegusa
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Patent number: 6984369Abstract: 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: GrantFiled: November 22, 2000Date of Patent: January 10, 2006Assignee: The Regents of the University of CaliforniaInventors: A. Paul Alivisatos, Joerg Rockenberger
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Patent number: 6908574Abstract: 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: GrantFiled: March 28, 2002Date of Patent: June 21, 2005Assignee: Dowa Mining Co., Ltd.Inventors: Tatsumi Inamura, Yoshio Moteki, Yoshichika Horikawa, Kohichiro Eshima
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Patent number: 6841497Abstract: 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: GrantFiled: April 21, 2000Date of Patent: January 11, 2005Assignee: Fraunhofer-Gesellschaft zur Foerderung der Angewandten Forschung E.V.Inventors: Andreas Krell, Hongwei Ma
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Publication number: 20040219087Abstract: 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: ApplicationFiled: June 27, 2001Publication date: November 4, 2004Inventors: Masahide Mohri, Hironobu Koike, Shinichiro Tanaka, Tetsu Umeda, Hisashi Watanabe, Kunio Saegusa, Akira Hasegawa
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Patent number: 6811760Abstract: 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: GrantFiled: March 30, 2001Date of Patent: November 2, 2004Assignee: General Electric CompanyInventors: James Scott Vartuli, Venkat Subramaniam Venkataramani
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Patent number: 6787069Abstract: 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: GrantFiled: September 21, 2001Date of Patent: September 7, 2004Assignee: Japan Science and Technology AgencyInventors: Shigemi Kohiki, Ryuta Kiyoshima, Shigenori Matsushima, Masakuni Sasaki
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Patent number: 6780393Abstract: 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: GrantFiled: December 14, 2001Date of Patent: August 24, 2004Assignees: National Institute of Advanced Industrial Science and Technology, Noritake Co., LimitedInventors: Norimitsu Murayama, Woosuck Shin, Sumihito Sago, Makiko Hayashi
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Patent number: 6773636Abstract: 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: GrantFiled: March 22, 2002Date of Patent: August 10, 2004Assignee: Sumitomo Chemical Company, LimitedInventors: Takeshi Hattori, Kunio Saegusa, Yuzo Shigesato
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Patent number: 6753099Abstract: 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: GrantFiled: June 27, 2002Date of Patent: June 22, 2004Assignees: 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
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Publication number: 20040105810Abstract: 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: ApplicationFiled: September 11, 2003Publication date: June 3, 2004Inventors: Zhifen Ren, J.Y. Lao, Debasish Banerjee
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Patent number: 6737376Abstract: 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 theType: GrantFiled: June 8, 2001Date of Patent: May 18, 2004Inventors: Klaus Heckmann, Thomas Wenger
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Patent number: 6680130Abstract: 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: GrantFiled: May 28, 2002Date of Patent: January 20, 2004Assignee: Agere Systems, Inc.Inventors: Lalita Manchanda, Martin Laurence Green
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Publication number: 20030178752Abstract: 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: ApplicationFiled: December 17, 2002Publication date: September 25, 2003Inventors: Kyong-Hwa Song, Sang-Cheol Park, Jung-Gyu Nam
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Patent number: 6623662Abstract: 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: GrantFiled: May 23, 2001Date of Patent: September 23, 2003Assignee: Chunghwa Picture Tubes, Ltd.Inventors: Kuo-Chu Wang, Chun-Min Hu
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Patent number: 6579475Abstract: 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: GrantFiled: December 7, 2000Date of Patent: June 17, 2003Assignee: FMC CorporationInventors: Yuan Gao, Marina Yakovleva, John L. Burba, III, John F. Engel