Producing Or Purifying Free Metal Powder Or Producing Or Purifying Alloys In Powder Form (i.e., Named Or Of Size Up To 1,000 Microns In Its Largest Dimension) Patents (Class 75/343)
  • Patent number: 10406111
    Abstract: The present disclosure is directed generally to gold/lanthanide nanoparticle conjugates, such as gold/gadolinium nanoparticle conjugates, nanoparticle conjugates including polymers, nanoparticle conjugates conjugated to targeting agents and therapeutic agents, and their use in targeting, treating, and/or imaging disease states in a patient.
    Type: Grant
    Filed: March 3, 2015
    Date of Patent: September 10, 2019
    Assignee: Colorado School of Mines
    Inventors: Stephen G. Boyes, Misty D. Rowe
  • Patent number: 10124411
    Abstract: A powder metal composition for high wear and temperature applications is made by atomizing a melted iron based alloy including 3.0 to 7.0 wt. % carbon; 10.0 to 25.0 wt. % chromium; 1.0 to 5.0 wt. % tungsten; 3.5 to 7.0 wt. % vanadium; 1.0 to 5.0 wt. % molybdenum; not greater than 0.5 wt. % oxygen; and at least 40.0 wt. % iron. The high carbon content reduces the solubility of oxygen in the melt and thus lowers the oxygen content to a level below which would cause the carbide-forming elements to oxidize during atomization. The powder metal composition includes metal carbides in an amount of at least 15 vol. %. The microhardness of the powder metal composition increases with increasing amounts of carbon and is typically about 800 to 1,500 Hv50.
    Type: Grant
    Filed: September 16, 2015
    Date of Patent: November 13, 2018
    Assignees: Federal-Mogul LLC, La Corporation de l'Ecole Polytechnique de Montreal
    Inventors: Philippe Beaulieu, Denis B. Christopherson, Jr., Leslie John Farthing, Todd Schoenwetter, Gilles L'Esperance
  • Patent number: 10106895
    Abstract: The method for producing noble metal nanocomposites involves reducing noble metal ions (Ag, Au and Pt) on graphene oxide (GO) or carbon nanotubes (CNT) by using Artocarpus integer leaves extract as a reducing agent. As synthesized MNPs/GO and MNPs/CNT composites have been characterized using X-ray diffraction (XRD), transmission electron microscope (TEM) imaging, and energy dispersive X-ray spectroscopy (EDX). The TEM images of prepared materials showed that the nanocomposites were 1-30 nm in size with spherical nanoparticles embedded on the surface of GO and CNT. This synthetic route is easy and rapid for preparing a variety of nanocomposites. The method avoids use of toxic chemicals, and the prepared nanocomposites can be used for biosensor, fuel cell, and biomedical applications.
    Type: Grant
    Filed: March 30, 2017
    Date of Patent: October 23, 2018
    Assignee: KING SAUD UNIVERSITY
    Inventors: Ali A. Alshatwi, Jegan Athinarayanan, Vaiyapuri Subbarayan Periasamy
  • Patent number: 10040124
    Abstract: The invention provides a method of preparing pure precious metal nanoparticles of controlled sizes and having (100) facets, wherein a precursor substance contained in a reagent solution is subjected to a reduction reaction using a reducing agent contained in the reagent solution to provide nanoparticles, and the reduction reaction is stopped by rapid lowering of the reaction solution temperature. In the process of the invention, the need to use surfactants or other organic particles to stabilize the (100) facets is eliminated.
    Type: Grant
    Filed: July 3, 2014
    Date of Patent: August 7, 2018
    Assignee: Uniwersytet Warszawski
    Inventors: Rafal Jurczakowski, Justyna Piwowar, Barbara Gralec, Adam Lewera
  • Patent number: 10032564
    Abstract: The present invention relates to a process for the deoxidation of valve metal primary powders by means of reducing metals and/or metal hydrides, and a process for the production of tantalum powders that are suitable as anode material for electrolytic capacitors.
    Type: Grant
    Filed: September 24, 2005
    Date of Patent: July 24, 2018
    Assignee: H.C. Starck Tantalum and Niobium GmbH
    Inventors: Helmut Haas, Ulrich Bartmann, Christoph Schnitter, Elisabeth Droste
  • Patent number: 9994929
    Abstract: Processes for the production of tantalum alloys and niobium are disclosed. The processes use aluminothermic reactions to reduce tantalum pentoxide to tantalum metal or niobium pentoxide to niobium metal.
    Type: Grant
    Filed: February 15, 2016
    Date of Patent: June 12, 2018
    Assignee: ATI PROPERTIES LLC
    Inventors: Arnel M. Fajardo, John W. Foltz, IV
  • Patent number: 9672950
    Abstract: This disclosure is related to low-haze transparent conductors, ink compositions and method for making the same.
    Type: Grant
    Filed: July 3, 2013
    Date of Patent: June 6, 2017
    Assignee: CAM Holding Corporation
    Inventors: Jelena Sepa, Frank Wallace
  • Patent number: 9321108
    Abstract: Preparation methods, compositions, and articles are disclosed and claimed. Methods for reducing metal ions to metals, the metal products, and articles comprising the metal products are claimed. Such methods show improved reproducibility upon scale-up than previous methods, resulting in products that exhibit reduced variability. The claimed inventions are useful for electronic and optical applications.
    Type: Grant
    Filed: August 8, 2011
    Date of Patent: April 26, 2016
    Assignee: Carestream Health, Inc.
    Inventors: William D. Ramsden, Doreen C. Lynch, Junping Zhang
  • Patent number: 9314849
    Abstract: A method for making a nanostructure is provided. The method includes adding a seed solution to a first aqueous growth solution to produce a nanoparticle solution in a first growth phase and continuously adding a second growth solution to the nanoparticle solution to form a nanostructure in a second growth phase. Related nanostructures are also provided.
    Type: Grant
    Filed: February 27, 2013
    Date of Patent: April 19, 2016
    Assignee: North Carolina State University
    Inventors: Joseph B. Tracy, Krystian A. Kozek, Klaudia Kozek
  • Patent number: 9211510
    Abstract: The present invention provides a method for producing nanoparticles, which comprises maintaining a minute space of 1 mm or less between two processing surfaces capable of approaching to and separating from each other and being rotating relative to each other, allowing the minute space maintained between the two processing surfaces to serve as a flow path of a processed fluid thereby forming a forced thin film of the processed fluid and separating nanoparticles in the forced thin film.
    Type: Grant
    Filed: July 4, 2008
    Date of Patent: December 15, 2015
    Assignee: M. Technique Co., Ltd.
    Inventor: Masakazu Enomura
  • Patent number: 9034073
    Abstract: A method for making a metal-based nano-composite material is disclosed. In the method, a semi-solid state metal-based material is provided. The semi-solid state metal-based material is stirred and nano-sized reinforcements are added into the semi-solid state metal-based material to obtain a semi-solid state mixture. The semi-solid state mixture is heated to a temperature above a liquidus temperature of the metal-based material, to achieve a liquid-metal-nano-sized reinforcement mixture. The liquid-metal-nano-sized reinforcement mixture is ultrasonically processed at a temperature above the liquidus temperature by conducting ultrasonic vibrations to the liquid-metal-nano-sized reinforcement mixture along different directions at the same time.
    Type: Grant
    Filed: December 12, 2011
    Date of Patent: May 19, 2015
    Assignees: Tsinghua University, HON HAI PRECISION INDUSTRY CO., LTD.
    Inventors: Wen-Zhen Li, Shi-Ying Liu
  • Patent number: 9028584
    Abstract: The method for forming a 3-D metal object by 3-D printing or injection molding comprising providing as a feed material metal particles formed by establishing multiple metal components in a primary billet of a ductile material, working the primary billet through a series of reduction steps to form the components into elongated elements, leaching the ductile material from the elongated elements and reducing the length to short uniform lengths.
    Type: Grant
    Filed: August 8, 2013
    Date of Patent: May 12, 2015
    Assignee: Composite Materials Technology, Inc.
    Inventor: James Wong
  • Patent number: 9017445
    Abstract: A method of making metal nanoparticles and carbon nanotubes is disclosed. A mixture of a transition metal compound and an aromatic polymer, a precursor of an aromatic polymer, or an aromatic monomer is heated to form a metal nanoparticle composition, optionally containing carbon nanotubes.
    Type: Grant
    Filed: November 19, 2012
    Date of Patent: April 28, 2015
    Assignee: The United States of America, as represented by the Secretary of the Navy
    Inventors: Teddy M Keller, Matthew Laskoski
  • Publication number: 20150099183
    Abstract: Electrodes employing as active material metal nanoparticles synthesized by a novel route are provided. The nanoparticle synthesis is facile and reproducible, and provides metal nanoparticles of very small dimension and high purity for a wide range of metals. The electrodes utilizing these nanoparticles thus may have superior capability. Electrochemical cells employing said electrodes are also provided.
    Type: Application
    Filed: March 19, 2014
    Publication date: April 9, 2015
    Applicant: Toyota Motor Engineering & Manufacturing North America, Inc.
    Inventors: Nikhilendra Singh, Michael Paul Rowe
  • Publication number: 20150099118
    Abstract: Electrodes for metal-air batteries and the metal-air batteries employing such electrodes are provided. The electrodes include metal nanoparticles synthesized via a novel route. The nanoparticle synthesis is facile and reproducible, and provides metal nanoparticles of very small dimension and high purity for a wide range of metals. The electrodes utilizing these nanoparticles thus may have superior capability. Electrochemical cells employing said electrodes are also provided.
    Type: Application
    Filed: June 17, 2014
    Publication date: April 9, 2015
    Inventors: Fuminori Mizuno, Michael Paul Rowe, Ryan Daniel Desautels
  • Publication number: 20150096887
    Abstract: Electrodes employing as active material iridium nanoparticles synthesized by a novel route are provided. The nanoparticle synthesis is facile and reproducible, and provides iridium nanoparticles of very small dimension and high purity for a wide range of metals. The electrodes utilizing these nanoparticles have excellent efficiency catalyzing the electrolytic production of oxygen from water.
    Type: Application
    Filed: July 10, 2014
    Publication date: April 9, 2015
    Inventors: Kenneth J. McDonald, Michael Paul Rowe
  • Patent number: 8951328
    Abstract: The invention relates to the production of valve metal powders, in particular, tantalum powders by reduction of a corresponding valve metal compound, for example, K2TaF7, with an alkali metal in the presence of a diluent salt, whereby the reduction is carried out in the presence of a particle diminution agent, preferably, Na2SO4, which is added to the reaction mixture continuously or in aliquots.
    Type: Grant
    Filed: December 9, 2004
    Date of Patent: February 10, 2015
    Assignee: H.C. Starck GmbH
    Inventors: Josua Löffelholz, Frank Behrens, Siegfried Schmieder
  • Patent number: 8940197
    Abstract: A process for preparing a palladium nanoparticle ink comprises reacting a reaction mixture comprising a palladium salt, a stabilizer, a reducing agent, and an optional solvent to directly form the palladium nanoparticle ink. During the formation of the palladium nanoparticle ink, the palladium nanoparticles are not isolated from the reaction mixture.
    Type: Grant
    Filed: February 24, 2012
    Date of Patent: January 27, 2015
    Assignee: Xerox Corporation
    Inventors: Ping Liu, Yiliang Wu, Nan-Xing Hu, Anthony James Wigglesworth
  • Publication number: 20150017258
    Abstract: A gold nanoparticle-based assay for the detection of a target molecule, such as Hepatitis C Virus (HCV) RNA in serum samples, that uses positively charged gold nanoparticles (AuNPs) in solution based format. The assay has been tested on 74 serum clinical samples suspected of containing HCV RNA, with 48 and 38 positive and negative samples respectively. The developed assay has a specificity and sensitivity of 96.5% and 92.6% respectively. The results obtained were confirmed by Real-Time PCR, and a concordance of 100% for the negative samples and 89% for the positive samples has been obtained between the Real-Time PCR and the developed AuNPs based assay. Also, a purification method for the HCV RNA has been developed using HCV RNA specific probe conjugated to homemade silica nanoparticles. These silica nanoparticles have been synthesized by modified Stober method. This purification method enhanced the specificity of the developed AuNPs assay.
    Type: Application
    Filed: January 31, 2013
    Publication date: January 15, 2015
    Applicant: AMERICAN UNIVERSITY OF CAIRO (AUC)
    Inventors: Hassan Mohamed El-Said Azzazy, Sherif Mohamed Shawky Abduo, Kamel Abdelmenem Mohamed Eid, Bassem Samy Shenouda Guirgis
  • Patent number: 8911663
    Abstract: The present invention relates to ferromagnetic powders with an electrically insulating layer on iron particles intended for the manufacture of components having improved soft magnetic properties at low and medium frequencies. The invention comprises an iron powder coated with a dielectric insulating layer comprising boron bearing compounds to form an insulated ferromagnetic powder. The present invention also relates to a method of making these insulated ferromagnetic powders. The present invention further relates to a method of synthesizing a product made from insulated ferromagnetic powders via a post-heat treatment at a moderate temperature (300° C. to 700° C.), to form a glass-like coating which acts as an electrical insulator. A preferred embodiment of the present invention is obtained when small amounts of alkali bearing compounds are added to the precursors to modify the coating chemistry and significantly increase the electrical resistivity after heat treatment.
    Type: Grant
    Filed: March 5, 2009
    Date of Patent: December 16, 2014
    Assignee: Quebec Metal Powders, Ltd.
    Inventors: Guillem Vachon, Claude Gelinas
  • Patent number: 8906130
    Abstract: This invention relates to thermal spray coatings, powders useful in deposition of the thermal spray coatings, methods of producing the powders, and uses of the thermal spray coatings, for example, coating of piston rings and cylinder liners of internal combustion engines. The coatings of this invention are applied by thermal spray deposition of a powder. The powder contains bimetallic carbides of chromium and molybdenum dispersed in a matrix metal. The matrix metal contains nickel/chromium/molybdenum.
    Type: Grant
    Filed: April 19, 2010
    Date of Patent: December 9, 2014
    Assignee: Praxair S.T. Technology, Inc.
    Inventors: William John Crim Jarosinski, Vladimir Belov
  • Publication number: 20140350147
    Abstract: A method of producing metal flakes (72?) is provided. The method includes: applying a layer of ionic liquid (70) to a substrate (24); forming a layer of metal (70) on the substrate (24) over the ionic liquid (70); and removing the layer of metal (70) from the substrate (24).
    Type: Application
    Filed: August 24, 2012
    Publication date: November 27, 2014
    Applicant: ECKART AMERICA CORPORATION
    Inventor: John Moffatt
  • Patent number: 8888889
    Abstract: The invention is directed to systems and methods for making non-hollow, non-fragmented spherical metal or metal alloy particles using diffusion dryers.
    Type: Grant
    Filed: June 1, 2011
    Date of Patent: November 18, 2014
    Assignees: E I du Pont de Nemours and Company, University of Maryland
    Inventors: Howard David Glicksman, Sheryl Ehrman, Alex Langrock, George Lee Peabody, V, Kai Zhong
  • Publication number: 20140336040
    Abstract: Methods of preparing monodispersed polydopamine nano- or microspheres are provided. The methods comprise providing a solvent system comprising water and at least one alcohol having the formula R—OH, wherein R is selected from the group consisting of optionally substituted C1-C6 alkyl, optionally substituted C2-C6 alkenyl, optionally substituted C2-C6 alkynyl, optionally substituted C3-C6 cycloalkyl, optionally substituted C3-C6 cycloalkenyl, and optionally substituted C6-C7 aryl; adding dopamine to said solvent system to form a reaction mixture; and agitating said reaction mixture for a time period of 1 to 10 days to form said monodispersed polydopamine nano- or microspheres. Methods of preparing carbon and hollow metal or metal oxide nano- or microspheres using the polydopamine nano- or microspheres are also provided.
    Type: Application
    Filed: January 4, 2013
    Publication date: November 13, 2014
    Inventors: Jian Yan, Liping Yang, Xuehong Lu, Pooi See Lee
  • Publication number: 20140334963
    Abstract: A titanium metal or a titanium alloy having submicron titanium boride substantially uniformly dispersed therein and a method of making same is disclosed. Ti power of Ti alloy powder has dispersed within the particles forming the powder titanium boride which is other than whisker-shaped or spherical substantially uniformly dispersed therein.
    Type: Application
    Filed: July 28, 2014
    Publication date: November 13, 2014
    Applicant: Cristal Metals Inc.
    Inventors: Lance Jacobsen, Adam Benish
  • Publication number: 20140329089
    Abstract: A method of preparing a metal nanorod. The method includes seeding a metal nanoparticle within the lumen of a nanotube, and growing a metal nanorod from the seeded metal nanoparticle to form a metal nanorod-nanotube composite. In some cases, the nanotube includes metal binding ligands attached to the inner surface. Growing of the metal nanorod includes incubating the seeded nanotube in a solution that includes: a metal source for the metal in the metal nanorod, the metal source including an ion of the metal; a coordinating ligand that forms a stable complex with the metal ion; a reducing agent for reducing the metal ion, and a capping agent that stabilizes atomic monomers of the metal. Compositions derived from the method are also provided.
    Type: Application
    Filed: November 15, 2012
    Publication date: November 6, 2014
    Applicant: The Regents of the University of California
    Inventors: Yadong Yin, Chuanbo Gao
  • Publication number: 20140322069
    Abstract: Methods of producing metal nanowires, compositions, and articles are disclosed. Such methods allow production of metal nanowires with reproducibly uniform diameter and length, even in the presence of catalyst concentration variation. Such metal nanowires are useful for electronics applications.
    Type: Application
    Filed: July 9, 2014
    Publication date: October 30, 2014
    Inventors: David R. Whitcomb, William D. Ramsden, Doreen C. Lynch
  • Patent number: 8864871
    Abstract: The present invention relates to a method for manufacturing copper nanoparticles, in particular, to a method for manufacturing copper nanoparticles, wherein the method includes preparing a mixture solution including a copper salt, a dispersing agent, a reducing agent and an organic solvent; raising temperature of the mixture solution up to 30-50° C. and agitating; irradiating the mixture solution with microwaves; and obtaining the copper nanoparticles by lowering temperature of the mixture solution. According to the present invention, several tens of nm of copper nanoparticles having a narrow particle size distribution and good dispersibility can be synthesized in mass production.
    Type: Grant
    Filed: August 27, 2007
    Date of Patent: October 21, 2014
    Assignee: Samsung Electro-Mechanics Co., Ltd.
    Inventors: Young-Il Lee, Jae-Woo Joung
  • Patent number: 8841352
    Abstract: It is an object to provide a method for producing compound semiconductor particles in which monodisperse compound semiconductor particles can be prepared according to the intended object, clogging with products does not occur due to self-dischargeability, a large pressure is not necessary, and productivity is high. In producing compound semiconductor particles by separating and precipitating, in a fluid, semiconductor raw materials, the fluid is formed into a thin film fluid between two processing surfaces arranged so as to be able to approach to and separate from each other, at least one of which rotates relative to the other, and the semiconductor raw materials are separated and precipitated in the thin film fluid.
    Type: Grant
    Filed: August 7, 2008
    Date of Patent: September 23, 2014
    Assignee: M Technique Co., Ltd.
    Inventor: Masakazu Enomura
  • Patent number: 8834747
    Abstract: Compositions containing tin nanoparticles and electrically conductive particles are described herein. The tin nanoparticles can have a size below about 25 nm so as to make the compositions fusable at temperatures below that of bulk tin (m.p.=232° C.). Particularly, when the tin nanoparticles are less than about 10 nm in size, the compositions can have a fusion temperature of less than about 200° C. The compositions can contain a whisker suppressant to inhibit or substantially minimize the formation of tin whiskers after tin nanoparticle fusion. In some embodiments, the compositions contain tin nanoparticles, electrically conductive particles comprising copper particles, and a whisker suppressant comprising nickel particles. Methods for using the present compositions are also described herein. The present compositions can be used as a lead solder replacement that allows rework to be performed.
    Type: Grant
    Filed: March 3, 2011
    Date of Patent: September 16, 2014
    Assignee: Lockheed Martin Corporation
    Inventor: Alfred A. Zinn
  • Patent number: 8834785
    Abstract: A method for producing a metal article according to one embodiment may involve the steps of: Providing a composite metal powder including a substantially homogeneous dispersion of molybdenum and molybdenum disulfide sub-particles that are fused together to form individual particles of the composite metal powder; and compressing the molybdenum/molybdenum disulfide composite metal powder under sufficient pressure to cause the mixture to behave as a nearly solid mass.
    Type: Grant
    Filed: July 11, 2011
    Date of Patent: September 16, 2014
    Assignee: Climax Engineered Materials, LLC
    Inventors: Matthew C. Shaw, Carl V. Cox, Yakov Epshteyn
  • Publication number: 20140251086
    Abstract: Methods of producing nanowires and resulting nanowires are described. In one implementation, a method of producing nanowires includes energizing (i) a metal-containing reagent; (ii) a templating agent; (iii) a reducing agent; and (iv) a seed-promoting agent (SPA) in a reaction medium and under conditions of a first temperature for at least a portion of a first duration, followed by a second temperature for at least a portion of a second duration, and the second temperature is different from the first temperature.
    Type: Application
    Filed: April 8, 2014
    Publication date: September 11, 2014
    Inventors: Sheng Peng, Arjun Srinivas, Tom Credelle, Andrew Loxley, Gayatri Keskar
  • Patent number: 8821611
    Abstract: A titanium metal or a titanium alloy having submicron titanium boride substantially uniformly dispersed therein and a method of making same is disclosed. Ti power of Ti alloy powder has dispersed within the particles forming the powder titanum boride which is other than whisker-shaped or spherical substantially uniformly dispersed therein.
    Type: Grant
    Filed: December 6, 2012
    Date of Patent: September 2, 2014
    Assignee: Cristal Metals Inc.
    Inventors: Lance Jacobsen, Adam Benish
  • Patent number: 8821610
    Abstract: A method and a device are described for the production of metal powder or alloy powder of a moderate grain sizes less than 10 ?m, comprising or containing at least one of the reactive metals zirconium, titanium, or hafnium, by metallothermic reduction of oxides or halogenides of the cited reactive metals with the aid of a reducing metal, wherein said metal powder or alloy powder is phlegmatized by adding a passivating gas or gas mixture during and/or after the reduction of the oxides or halogenides and/or is phlegmatized by adding a passivating solid before the reduction of the oxides or halogenides, wherein both said reduction and also said phlegmatization are performed in a single gas-tight reaction vessel which can be evacuated.
    Type: Grant
    Filed: January 8, 2009
    Date of Patent: September 2, 2014
    Assignee: Tradium GmbH
    Inventor: Ulrich Gerhard Baudis
  • Patent number: 8815151
    Abstract: Nanowire preparation methods, compositions, and articles are disclosed. Such methods which reduce metal ions to metal nanowires in the presence complexes comprising metal-metal bonds, are capable of producing long, narrow, nanowires useful for electronics and optical applications.
    Type: Grant
    Filed: April 23, 2012
    Date of Patent: August 26, 2014
    Assignee: Carestream Health, Inc.
    Inventor: David R. Whitcomb
  • Publication number: 20140227519
    Abstract: Methods of preparing metal nanowire are disclosed that employ quaternary phosphonium salts. Such processes can produce long and thin nanowires. Compositions and articles comprising such nanowires are useful in electronics applications.
    Type: Application
    Filed: April 17, 2014
    Publication date: August 14, 2014
    Applicant: Carestream Health, Inc.
    Inventor: David R. Whitcomb
  • Publication number: 20140220341
    Abstract: Disclosed are a method of fabricating a nano wire and a nano wire complex. The method of fabricating a nano wire includes forming a plurality of seed particles by allowing a first ion to react with a second ion in a solvent, and forming a metallic nano wire by adding and heating a metallic compound in the solvent.
    Type: Application
    Filed: June 25, 2012
    Publication date: August 7, 2014
    Applicant: LG INNOTEK CO., LTD.
    Inventors: Joon Rak Choi, Jong Woon Moon, Young Sun You, Kyoung Hoon Chai
  • Patent number: 8764913
    Abstract: Surface-coated metal nanoparticles comprising: metal nanoparticles having an average particle diameter of 1 to 100 nm, and an organic coating film provided on a surface of each of the metal nanoparticles, wherein the organic coating film comprises a fatty acid having 8 or more carbon atoms and an aliphatic amine having 8 or more carbon atoms, and a molar ratio of the aliphatic amine to the fatty acid is aliphatic amine/fatty acid from 0.001/1 to 0.2/1.
    Type: Grant
    Filed: August 17, 2011
    Date of Patent: July 1, 2014
    Assignee: Kabushiki Kaisha Toyota Chuo Kenkyusho
    Inventor: Toshitaka Ishizaki
  • Publication number: 20140178247
    Abstract: A process for making silver nanostructures, which includes the step of reacting at least one polyol and at least one silver compound that is capable of producing silver metal when reduced, in the presence of: (a) a source of chloride or bromide ions, and (b) at least one copolymer that comprises: (i) one or more first constitutional repeating units that each independently comprise at least one pendant saturated or unsaturated, five-, six-, or seven-membered, acylamino- or diacylamino-containing heterocylic ring moiety per constitutional repeating unit, and (ii) one or more second constitutional repeating units, each of which independently differs from the one or more first nonionic constitutional repeating units, and has a molecular weight of greater than or equal to about 500 grams per mole, is described herein.
    Type: Application
    Filed: September 27, 2013
    Publication date: June 26, 2014
    Applicant: Rhodia Operations
    Inventors: Ahmed Alsayed, Lawrence Hough, Chantal Badre
  • Publication number: 20140178246
    Abstract: A process for making silver nanostructures, which includes the step of reacting at least one polyol and at least one silver compound that is capable of producing silver metal when reduced, in the presence of: (a) a source of chloride or bromide ions, and (b) at least one copolymer that comprises: (i) one or more first constitutional repeating units that each independently comprise at least one pendant saturated or unsaturated, five-, six-, or seven-membered, acylamino- or diacylamino-containing heterocylic ring moiety per constitutional repeating unit, and (ii) one or more second constitutional repeating units, each of which independently differs from the one or more first nonionic constitutional repeating units, and has a molecular weight of greater than or equal to about 500 grams per mole, is described herein.
    Type: Application
    Filed: September 27, 2013
    Publication date: June 26, 2014
    Applicant: Rhodia Operations
    Inventors: Ahmed Alsayed, Lawrence Hough, Chantal Badre
  • Patent number: 8758475
    Abstract: The present invention provides a process for simply and easily producing fine metal particles or fine metal oxide particles in the form of a dry powder which can be used as extremely fine particles in a good dispersion state without causing coagulation for a long time even if not stored in a dispersion solvent.
    Type: Grant
    Filed: October 20, 2004
    Date of Patent: June 24, 2014
    Assignee: Harima Chemicals, Inc.
    Inventors: Daisuke Itoh, Masayuki Ueda, Noriaki Hata, Yorishige Matsuba
  • Patent number: 8758900
    Abstract: The present invention provides nanometer-size spherical particles. Each of the particles is made of at least one selected from the group consisting of a metal, an alloy, and a metal compound. The particles include one or both of a polycrystalline region and a single-crystalline region. The particles have a particle size of less than 1 ?m; and a sphericity of ?10% to +10%.
    Type: Grant
    Filed: May 27, 2010
    Date of Patent: June 24, 2014
    Assignee: Napra Co., Ltd.
    Inventors: Shigenobu Sekine, Yurina Sekine
  • Patent number: 8758476
    Abstract: Provided are a method of producing mixed powder comprising noble metal powder and oxide powder, wherein powder of ammonium chloride salt of noble metal and oxide powder are mixed, the mixed powder is subsequently roasted, and ammonium chloride is desorbed by the roasting process in order to obtain mixed powder comprising noble metal powder and oxide powder, and mixed powder comprising noble metal powder and oxide powder, wherein chlorine is less than 1000 ppm, nitrogen is less than 1000 ppm, 90% or more of the grain size of the noble metal powder is 20 ?m or less, and 90% or more of the grain size of the oxide powder is 12 ?m or less. Redundant processes in the production of noble metal powder are eliminated, and processes are omitted so that the inclusion of chlorine contained in the royal water and nitrogen responsible for hydrazine reduction reaction is eliminated as much as possible.
    Type: Grant
    Filed: August 18, 2009
    Date of Patent: June 24, 2014
    Assignee: JX Nippon Mining & Metals Corporation
    Inventors: Atsutoshi Arakawa, Kazuyuki Satoh, Atsushi Sato
  • Publication number: 20140165785
    Abstract: A method of producing metallic powder for use in the manufacture of a capacitor comprises the step of reducing a non-metallic compound to metal in contact with a molten salt. The salt comprises, for at least a portion of the process, a dopant element that acts as a sinter retardant in the metal. In preferred examples, the metallic powder is Ta or Nb powder produced by the reduction of a Ta or Nb oxide and the dopant is boron, nitrogen, or phosphorous.
    Type: Application
    Filed: February 19, 2014
    Publication date: June 19, 2014
    Applicant: METALYSIS LIMITED
    Inventors: RAYMOND KEVIN RASHEED, IAN MARGERISON
  • Patent number: 8747517
    Abstract: A method for isolating a nanoparticle is disclosed. A medium containing a nanoparticle is provided. The medium is acidified with a weak acid. An alcoholic solvent is added to induce the nanoparticle to precipitate from the medium. The precipitated nanoparticles are separated from the medium.
    Type: Grant
    Filed: June 30, 2009
    Date of Patent: June 10, 2014
    Assignee: Life Technologies Corporation
    Inventors: Joseph Bartel, Kari Haley, Berhane Measho
  • Publication number: 20140144291
    Abstract: Disclosed is a method of producing low oxygen-content molybdenum powders by reducing molybdenum trioxide, which includes charging a first reducing agent and the molybdenum trioxide, which are in the direct contact with each other on a micro-sieve on an upper portion of a bracket in a body, charging a second reducing agent in the bracket under the micro-sieve, coupling the body with a cover to close the body, and performing a reduction reaction by raising an internal temperature of the body by performing the first reduction reaction due to direct contact between the first reducing agent and the molybdenum trioxide, and performing the second reduction reaction due to evaporation of the second reducing agent. The first and second reduction reactions are performed at a temperature in a range of 550° C. to 650° C., and a temperature in a range of 1000° C. to 1200° C., respectively.
    Type: Application
    Filed: November 13, 2013
    Publication date: May 29, 2014
    Applicant: KOREA INSTITUTE OF GEOSCIENCE AND MINERAL RESOURCES
    Inventors: Hyung-Seok KIM, Jung-Min Oh, Chang-Youl Suh, Back-Kyu Lee, Jae-Won Lim
  • Publication number: 20140144881
    Abstract: Provided is a nanowire manufacturing method, comprising forming a plurality of grid patterns on a substrate, forming a nanowire on the grid patterns, and separating the grid pattern and the nanowire. According to the present invention, the width and height of the nanowire can be adjusted by controlling the wet-etching process time period, and the nanowire can be manufactured at a room temperature at low cost, the nanowire can be mass-manufactured and the nanowire with regularity can be manufactured even in case of mass production.
    Type: Application
    Filed: June 28, 2012
    Publication date: May 29, 2014
    Applicant: LG INNOTEK CO., LTD.
    Inventors: Young Jae Lee, Kyoung Jong Yoo, Jun Lee, Jin Su Kim, Jae Wan Park
  • Patent number: 8728197
    Abstract: A metron refers to a molecule which contains a pre-defined number of high affinity binding sites for metal ions. Metrons may be used to prepare homogenous populations of nanoparticles each composed of a same, specific number of atoms, wherein each particle has the same size ranging from 2 atoms to about ten nanometers.
    Type: Grant
    Filed: December 12, 2011
    Date of Patent: May 20, 2014
    Assignee: The United States of America, as represented by the Secretary of the Navy
    Inventors: David A. Kidwell, Albert Epshteyn
  • Patent number: 8721762
    Abstract: A process for synthesizing metal submicron and nano-scale powders for use in articles of manufacture. In a suitable reactor, single metal or multiple metal complexes are heated to a temperature whereby, upon contact with hydrogen gas, an exothermic reaction begins. The further temperature rise in response to the exothermic reaction is minimized by reducing the external heat input, thereby minimizing the agglomeration or sintering of the metal nano-scale particles resulting from the process. Preferably, after drawing a vacuum on the metal complexes in the reactor, the hydrogen is introduced at about, equal to or below ambient pressure and the reaction is purposely made slow to prevent agglomeration or sintering.
    Type: Grant
    Filed: June 10, 2010
    Date of Patent: May 13, 2014
    Assignee: Chemano, Inc.
    Inventor: Wei Wu
  • Publication number: 20140123809
    Abstract: An object of the present invention is to provide a method for producing an alloy recycled material by effectively removing carbon from a carbon-containing alloy, which is produced as scrap or sludge of an R—Fe—B based permanent magnet, a used magnet, or the like. The method of the present invention as a means for resolution is characterized in that a carbon-containing R—Fe—B based permanent magnet alloy is subjected to an HDDR treatment to remove carbon. An alloy recycled material produced by the method of the present invention contains a reduced amount of carbon. Therefore, in the case where it is recycled for the production of a magnet, even when an increased amount is subjected to high-frequency heating in a vacuum melting furnace, a non-negligible increase in the amount of carbon contained in the produced magnet can be avoided.
    Type: Application
    Filed: June 29, 2012
    Publication date: May 8, 2014
    Applicant: HITACHI METALS, LTD.
    Inventors: Katsuyoshi Furusawa, Atsushi Kikugawa