Powder, Flakes, Or Colloidal Particles Patents (Class 205/74)
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Patent number: 11027320Abstract: A method for extracting an elemental metal from agricultural waste including collecting a sample of the waste and performing an electrochemical extraction on the waste to producing a metal precipitate and a byproduct. The method further including collecting the metal precipitate and byproduct produced via the electrochemical extraction for further reaction, recycling, sale, or reuse.Type: GrantFiled: November 13, 2018Date of Patent: June 8, 2021Assignee: Colorado State University Research FoundationInventors: Sam Jalali, Terry E. Engle
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Patent number: 10385467Abstract: A metal nanolaminate includes a plurality of units stacked in a longitudinal direction of the metal nanolaminate. Each of the units includes a first layer and a second layer stacked in the longitudinal direction. The first layer includes a first metal material formed of a first metallic element and the second layer includes the first metal material and a second metal material formed of a second metallic element. Each of the first layer and the second layer has a thickness of at least 5 nm but less than 100 nm in the longitudinal direction.Type: GrantFiled: April 28, 2017Date of Patent: August 20, 2019Assignees: Korea Institute of Science and Technology, Korea University Research and Business FoundationInventors: Insuk Choi, Young Keun Kim
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Patent number: 9580829Abstract: Disclosed is a copper foil for printed circuits prepared by forming a primary particle layer of copper on a surface of a copper foil, and then forming a secondary particle layer based on ternary alloy composed of copper, cobalt and nickel on the primary particle layer; in which the average particle size of the primary particle layer is 0.25 to 0.45 ?m, and the average particle size of the secondary particles layer based on ternary alloy composed of copper, cobalt and nickel is 0.05 to 0.25 ?m. Provided is a copper foil for printed circuits, in which powder fall from the copper foil can be reduced and the peeling strength and heat resistance can be improved by forming a primary particle layer of copper on a surface of a copper foil, and then forming a secondary particle layer based on copper-cobalt-nickel alloy plating on the primary particle layer.Type: GrantFiled: February 3, 2011Date of Patent: February 28, 2017Assignee: JX Nippon Mining & Metals CorporationInventors: Hideta Arai, Atsushi Miki
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Patent number: 9163318Abstract: An oxygen-consuming electrode is described, more particularly for use in chloralkali electrolysis, comprising a novel catalyst coating, as is an electrolysis apparatus. Also described is a production process for the oxygen-consuming electrode and the use thereof in chloralkali electrolysis or fuel cell technology. The oxygen-consuming electrode comprises at least an electrically conductive support, an electrical contact site and a gas diffusion layer comprising a catalytically active component, characterized in that the coating at least one fluorinated polymer, silver in the form of silver particles and silver oxide in the form of silver oxide particles, which is produced in a selected precipitation step.Type: GrantFiled: September 24, 2012Date of Patent: October 20, 2015Assignee: Bayer Intellectual Property GmbHInventors: Jürgen Kintrup, Andreas Bulan
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Patent number: 9118082Abstract: An oxygen-consuming electrode is described, more particularly for use in chloralkali electrolysis, comprising a novel catalyst coating based on silver and a finely divided silver oxide, as is an electrolysis apparatus. Also described is a production process for the oxygen-consuming electrode and the use thereof in chloralkali electrolysis or fuel cell technology.Type: GrantFiled: September 24, 2012Date of Patent: August 25, 2015Assignee: BAYER INTELLECTUAL PROPERTY GMBHInventors: Andreas Bulan, Rainer Weber, Sven Albrecht, Juliane Meese-Marktscheffel, Armin Obrich
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Patent number: 9096954Abstract: An object of the invention is to provide a metal nanoparticle array structure in which metal nanoparticle arrays are firmly bonded to the substrate thereof via chemical bonding or the like and in which the coverage with the metal nanoparticle arrays is high. The problem can be solved by using a metal nanoparticle array structure 10 that comprises a substrate 1, a immobilizing layer 2 formed on one surface 1a of the substrate 1, and metal nanoparticle arrays 3 formed on one surface 2a of the immobilizing layer 2, wherein the metal nanoparticle arrays 3 are so arrayed that multiple metal nanoparticles 4 can be at regular intervals and the metal nanoparticles 4 are bonded to each other via the modifying part 5 arranged on a surface thereof while the metal nanoparticles 4 are immobilized on one surface 2a of the immobilizing layer 2 via chemical bonds.Type: GrantFiled: March 3, 2011Date of Patent: August 4, 2015Assignee: NATIONAL INSTITUTE FOR MATERIALS SCIENCEInventors: Katsuhiro Isozaki, Kazushi Miki, Takao Ochiai, Tomoya Taguchi, Kohichi Nittoh
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Patent number: 8852521Abstract: The present disclosure is drawn to methods and systems for producing solutions containing ultrafine metal particles. The method for producing ultrafine metal particles in an aqueous medium includes providing a reaction chamber having a transition metal anode and a transition metal cathode disposed therein. The reaction chamber can also contain an aqueous medium. An anode and cathode are associated at a distance with respect to one another such that when activated by a power source, a discharge arc occurs between the anode and cathode within the aqueous medium. Activation of a power source causes the discharge arc to occur between the anode and the cathode, thereby generating ultrafine metal particles suspended within the aqueous medium.Type: GrantFiled: February 17, 2010Date of Patent: October 7, 2014Assignee: Brigham Young UniversityInventors: Robert H. Todd, Christopher J. Lewis, Jonathan George
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Publication number: 20140286817Abstract: The present invention relates to a method of producing a large amount of hard-soft magnetic nanocomposite powder in short time. The hard-soft magnetic nanocomposite powder of present invention has some merits such as independence from resource supply problem of rare earth elements and low price and can overcome physical and magnetic limitations possessed by the conventional ferrite monophased material.Type: ApplicationFiled: January 9, 2013Publication date: September 25, 2014Inventors: Jinbae Kim, Jongryoul Kim, Sanggeun Cho, Namseok Kang
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Publication number: 20130199673Abstract: The invention is directed to a process to prepare metal nanoparticles or metal oxide nanoparticles by applying a cathodic potential as an alternating current (ac) voltage to a solid starting metal object which solid metal object is in contact with a liquid electrolyte comprising a stabilising cation. The invention is also directed to the use of the nanoparticles as a catalyst.Type: ApplicationFiled: July 14, 2011Publication date: August 8, 2013Applicants: STICHTING VOOR FUNDAMENTEEL ONDERZOEK DER MATERIE, UNIVERSITEIT LEIDENInventors: Alexei Yanson, Marcus Koper, Paramaconi Rodriguez, Nuria Garcia-Araez
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Publication number: 20130175176Abstract: Provided is a flat Ni particle which has a large specific surface area, permitting efficient binder removal when the flat Ni particle is used for internal electrodes of a laminated ceramic electronic component. The flat Ni particle has a thickness t (m), a specific gravity ? (g/m3), and a radius r (m), and a specific surface area S1 (m2/g), such that the specific surface area S1 is adapted to have a relationship of 1.5×S0<S1<1.9×S0 with a theoretical specific surface area in the case of assuming a surface to be completely smooth, represented by S0=2/(?×t)+2?2/(?×r)(m2/g).Type: ApplicationFiled: March 1, 2013Publication date: July 11, 2013Applicant: MURATA MANUFACTURING CO., LTD.Inventor: MURATA MANUFACTURING CO., LTD.
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Patent number: 8395052Abstract: The present invention aims to provide conductive particles which can reduce the stress while maintaining high hardness (hardly causing cracks even in a state of being crushed in connection process) by improving rolling properties and can ensure adequate conductive reliability not only with respect to ITO substrates, but also with respect to IZO substrates, an anisotropic conductive film provided with the conductive particles, a joined structure provided with the anisotropic conductive film, and a joining method using the anisotropic conductive film. The conductive particles of the present invention include polymer fine particles, and a conductive layer formed on surfaces of the polymer fine particles, wherein an outermost surface shell of the conductive layer is a nickel-palladium alloy layer.Type: GrantFiled: December 22, 2010Date of Patent: March 12, 2013Assignee: Dexerials CorporationInventors: Tomoyuki Ishimatsu, Hiroki Ozeki, Hiroshi Hamachi
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Publication number: 20120148860Abstract: Provided is a flat Ni particle which has a large specific surface area, permitting efficient binder removal when the flat Ni particle is used for internal electrodes of a laminated ceramic electronic component. The flat Ni particle has a thickness t (m), a specific gravity ? (g/m3), and a radius r (m), and a specific surface area S1 (m2/g), such that the specific surface area S1 is adapted to have a relationship of 1.5×S0<S1<1.9×S0 with a theoretical specific surface area in the case of assuming a surface to be completely smooth, represented by S0=2/(?×t)+2?2/(?×r) (m2/g).Type: ApplicationFiled: February 23, 2012Publication date: June 14, 2012Applicant: MURATA MANUFACTURING CO., LTD.Inventor: Takao Hosokawa
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Patent number: 8158056Abstract: An arrangement producing metal nanoparticles includes a ?-ray irradiator installed in a radioactive shielding room, a reactor that is disposed to oppose the ?-ray irradiator, and a power supply installed outside the radioactive shielding room to supply power to the reactor. The reactor includes a container receiving reaction materials and transmitting the energy of ?-rays to reaction materials arranged inside of the reactor, an agitator that is installed in the container to be capable of rotating, and a driving source for receiving the power from the power supply to drive the agitator.Type: GrantFiled: February 21, 2008Date of Patent: April 17, 2012Assignee: Samsung SDI Co., Ltd.Inventors: Geun-Seok Chai, Myoung-Ki Min, Soon-Ki Kang
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Patent number: 8088193Abstract: A method for making nanoparticles includes the steps of dipping a metal element in a solution that contains metallic ions or ions with a metal, wherein the metal element has a lower electronegativity or redox potential than that of the metal in the ions, and rubbing the metal element to make nanoparticles. Another method for making nanoparticles includes the steps of dipping a metal element in a solution that contains metallic ions or ions with a metal, wherein the metal element has a lower electronegativity or redox potential than that of the metal in the ions, and applying sonic energy to at least one of the metal element and solution. A further method for making copper nanoparticles includes the step of adding ascorbic acid to a copper salt solution.Type: GrantFiled: December 17, 2007Date of Patent: January 3, 2012Inventors: Taofang Zeng, Chunwei Wu
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Publication number: 20100229684Abstract: The present invention provides metal fine particles which have selective wavelength absorption characteristics in a wavelength region from visible light to near infrared light, and have sharp absorption characteristics, and influences little the surrounding wavelength, and therefore, they yield tones having high chroma. The present invention provides metal fine particles wherein an aspect ratio is in a range from 1.1 to 8.0, a maximum absorption wavelength in plasmon absorption is in a range from 400 nm to 1,200 nm, and an absorption coefficient at a peak position of the maximum absorption wavelength is in a range from 6,000 to 20,000 L/mol·cm (measurement concentration: 1.6×10?4 mol/L, and solvent: water).Type: ApplicationFiled: March 24, 2010Publication date: September 16, 2010Applicants: Mitsubishi Materials Corporation, Dai Nippon Toryo Co., Ltd.Inventors: Yoshiaki Takata, Hiroki Hirata, Jun-etsu Satoh, Yasuro Niidome, Sunao Yamada, Koji Nishioka, Hideya Kawasaki, Daigou Mizoguchi, Masanori Nagai, Masato Murouchi, Masaoki Ishihara
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Publication number: 20100206734Abstract: The present disclosure is drawn to methods and systems for producing solutions containing ultrafine metal particles. The method for producing ultrafine metal particles in an aqueous medium includes providing a reaction chamber having a transition metal anode and a transition metal cathode disposed therein. The reaction chamber can also contain an aqueous medium. An anode and cathode are associated at a distance with respect to one another such that when activated by a power source, a discharge arc occurs between the anode and cathode within the aqueous medium. Activation of a power source causes the discharge arc to occur between the anode and the cathode, thereby generating ultrafine metal particles suspended within the aqueous medium.Type: ApplicationFiled: February 17, 2010Publication date: August 19, 2010Inventors: Robert H. Todd, Christopher J. Lewis, Jonathan George
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Publication number: 20100193363Abstract: Electrochemical methods for making nanostructures, for example, titanium oxide (TiO2) nanostructures are described. The morphology of the nanostructures can be manipulated by controlling reaction parameters, for example, solution composition, applied voltage, and time. The methods can be used at ambient conditions, for example, room temperature and atmospheric pressure and use moderate electric potentials. The methods are scalable with a high degree of controllability and reproducibility.Type: ApplicationFiled: January 30, 2009Publication date: August 5, 2010Inventor: Shrisudersan Jayaraman
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Publication number: 20100176001Abstract: The present invention generally relates to an electroplating solution for manufacturing nanometer platinum and platinum based alloy particles and a method thereof. That is, an acid solution having platinum complex compound and citric acid is provided into a reaction tank to be as an electroplating solution, then a plurality of platinum and platinum based alloy particles are deposited on the surfaces of electrodes under the condition of applying negative potentials. The acid solution is capable of effectively providing the rate of conducting ions. The citric acid can effectively promote the dispersity of the platinum and platinum based alloy particles and reduce the dimensions the platinum and platinum based alloy particles.Type: ApplicationFiled: November 27, 2009Publication date: July 15, 2010Applicant: NATIONAL TSING HUA UNIVERSITY (TAIWAN)Inventors: Chuen-Horng Tsai, Ming-Chi Tsai, Tsung-Kuang Yeh
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Patent number: 7736485Abstract: Nanoplatelet forms of metal hydroxide and metal oxide are provided, as well as methods for preparing same. The nanoplatelets are suitable for use as fire retardants and as agents for chemical or biological decontamination.Type: GrantFiled: August 9, 2007Date of Patent: June 15, 2010Assignee: Aqua Resources CorporationInventor: Orville Lee Maddan
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Publication number: 20100089759Abstract: A method for producing conductor fine particles in which the advantages of conventional vapor phase method and liquid phase method are utilized while eliminating the drawbacks of both methods remarkably. Furthermore, definite guidelines and measure for improvement are given to the greatest problems common to the vapor phase method and liquid phase method, i.e., enhancement in quality of the unit fine particle and a fine particle production method controllably temporarily and regionally. The method for producing conductor fine particles comprises a step for applying a voltage to a pair of electrode consisting of a positive electrode and a negative electrode arranged in conductive liquid and generating plasma in the vicinity of the negative electrode, and a step for producing conductor fine particles by melting the metal material of the negative electrode and then re-solidifying.Type: ApplicationFiled: February 15, 2008Publication date: April 15, 2010Applicant: NATIONAL UNIVERSITY CORPORATION HOKKAIDO UNIVERSITYInventors: Seiichi Watanabe, Yu Toriyabe, Shigeo Yatsu, Tamaki Shibayama, Tadahiko Mizuno
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Publication number: 20100024879Abstract: A method of preparing titania nanotubes involves anodization of titanium in the presence of chloride ions and at low pH (1-7) in the absence of fluoride. The method leads to rapid production of titania nanotubes of about 25 nm diameter and high aspect ratio. The nanotubes can be organized into bundles and tightly packed parallel arrays. Inclusion of organic acids in the electrolyte solution leads to the incorporation into the nanotubes of up to 50 atom percent of carbon. In a two-stage method, a titanium anode is pre-patterned using a fluoride ion containing electrolyte and subsequently anodized in a chloride ion containing electrolyte to provide more evenly distributed nanotube arrays. The titania nanotubes have uses in composite materials, solar cells, hydrogen production, and as hydrogen sensors.Type: ApplicationFiled: February 21, 2008Publication date: February 4, 2010Applicant: NORTHEASTERN UNIVERSITYInventors: Christiaan Richter, Latika Menon, Ronald J. Willey
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Patent number: 7608538Abstract: The present invention is related to a method for forming vertical conductive structures by electroplating. Specifically, a template structure is first formed, which includes a substrate, a discrete metal contact pad located on the substrate surface, an inter-level dielectric (ILD) layer over both the discrete metal contact pad and the substrate, and a metal via structure extending through the ILD layer onto the discrete metal contact pad. Next, a vertical via is formed in the template structure, which extends through the ILD layer onto the discrete metal contact pad. A vertical conductive structure is then formed in the vertical via by electroplating, which is conducted by applying an electroplating current to the discrete metal contact pad through the metal via structure. Preferably, the template structure comprises multiple discrete metal contact pads, multiple metal via structures, and multiple vertical vias for formation of multiple vertical conductive structures.Type: GrantFiled: January 5, 2007Date of Patent: October 27, 2009Assignee: International Business Machines CorporationInventors: Hariklia Deligianni, Qiang Huang, John P. Hummel, Lubomyr T. Romankiw, Mary B. Rothwell
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Publication number: 20090098454Abstract: An object is to provide an electrolytic manganese dioxide with optimized properties, and a high capacity alkaline primary battery with excellent high-rate discharge characteristics. Disclosed is a spherical electrolytic manganese dioxide having an average circularity of 0.89 or more. The loss on heating from 200 to 400° C. of the spherical electrolytic manganese dioxide is preferably 2.5% by weight or more. Also disclosed is an alkaline primary battery including the above-described spherical electrolytic manganese dioxide as a positive electrode active material.Type: ApplicationFiled: October 2, 2008Publication date: April 16, 2009Inventors: Harunari Shimamura, Jun Nunome, Fumio Kato
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Patent number: 7273537Abstract: A method of producing metal particles through electrolysis. A cathode having a plurality of active zones on a surface thereof is at least partially immersed in a reaction solution. The cathode is spaced from an anode also at least partially immersed in the reaction solution. A voltage potential is applied between the anode and cathode. Metal particles form on the active zones of the cathode. In order to promote the formation of good quality particles, a turbulent flow of the solution is maintained past one or more the active zones, and the current density in the active zones is maintained greater than about 5 kA/m2. The particles may be dislodged from the cathode after they have achieved a desired size.Type: GrantFiled: April 24, 2003Date of Patent: September 25, 2007Assignee: Teck Cominco Metals, Ltd.Inventors: Stuart I. Smedley, Martin De Tezanos Pinto, Stephen R. Des Jardins, Donald James Novkov, Ronald Gulino
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Patent number: 7166203Abstract: A system for maintaining a concentration range of an electroreducible metal species undergoing electrolysis within a predetermined concentration range comprises a first container containing a body of an electrolyte solution in which a metal is partially dissolved, a second container in fluid communication with the first container, the second container containing a second body of the solution, and a means for exchanging solution between the containers. The second container is configured with a means for electrolyzing, and a means for sensing the concentration of, the dissolved metal in the second body. During electrolysis, if the sensed concentration is within a predetermined range, the second body is circulated through the electrolyzing means; if the sensed concentration is outside or nearly outside the range, the solution is exchanged to maintain the concentration within the range.Type: GrantFiled: September 10, 2003Date of Patent: January 23, 2007Assignee: Teck Cominco Metals Ltd.Inventors: Stephen R. Des Jardins, Stuart I. Smedley
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Patent number: 6919009Abstract: A method is disclosed for the manufacture of colloidal rod particles as nanobarcodes. Template membranes for the deposition of materials are prepared using photolithographic techniques.Type: GrantFiled: October 2, 2001Date of Patent: July 19, 2005Assignee: Nanoplex Technologies, Inc.Inventors: Walter Stonas, Louis J. Dietz, Ian D. Walton, Michael J. Natan, James L. Winkler
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Publication number: 20040245106Abstract: The present invention provides a liquid tank which has a compact construction comprising a process bath, an agitation service bath, an agitation room, a liquid supply tunnel, and a liquid supply outlet.Type: ApplicationFiled: May 18, 2004Publication date: December 9, 2004Applicant: Yamamoto-MS Co., Ltd.Inventor: Wataru Yamamoto
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Publication number: 20040197255Abstract: A family of discrete and uniformly sized silicon nanoparticles, including 1 (blue emitting), 1.67 (green emitting), 2.15 (yellow emitting), 2.9 (red emitting) and 3.7 nm (infrared emitting) nanoparticles, and a method that produces the family. The nanoparticles produced by the method of the invention are highly uniform in size. A very small percentage of significantly larger particles are produced, and such larger particles are easily filtered out. The method for producing the silicon nanoparticles of the invention utilizes a gradual advancing electrochemical etch of bulk silicon, e.g., a silicon wafer. The etch is conducted with use of an appropriate intermediate or low etch current density. An optimal current density for producing the family is ˜10 milli Ampere per square centimeter (10 mA/cm2). Higher current density favors 1 nm particles, and lower the larger particles.Type: ApplicationFiled: April 22, 2004Publication date: October 7, 2004Applicant: The Board of Trustees of the University of IllinoisInventors: Munir H. Nayfeh, Gennadiy Belomoin, Satish Rao, Joel Therrien, Sahraoui Chaieb
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Publication number: 20040178076Abstract: A method is disclosed for the manufacture of colloidal rod particles as nanobarcodes. Template membranes for the deposition of materials are prepared using photolithographic techniques.Type: ApplicationFiled: March 11, 2004Publication date: September 16, 2004Inventors: Walter J. Stonas, Louis J. Dietz, Ian D. Walton, Michael J. Natan, James L. Winkler
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Publication number: 20040168922Abstract: A system for producing metal particles using a discrete particle electrolyzer cathode, a discrete particle electrolyzer cathode, and methods for manufacturing the cathode. The cathode has a plurality of active zones on a surface thereof at least partially immersed in a reaction solution. The active zones are spaced from one another by between about 0.1 mm and about 10 mm, and each has a surface area no less than about 0.02 square mm. The cathode is spaced from an anode also at least partially immersed in the reaction solution. A voltage potential is applied between the anode and cathode. Metal particles form on the active zones of the cathode. The particles may be dislodged from the cathode after they have achieved a desired size. The geometry and composition of the active zones are specified to promote the growth of high quality particles suitable for use in metal/air fuel cells. Cathodes may be formed from bundled wire, machined metal, chemical etching, or chemical vapor deposition techniques.Type: ApplicationFiled: April 24, 2003Publication date: September 2, 2004Inventors: Stuart I. Smedley, Martin De Tezanos Pinto, Stephen R. des Jardins, Donald James Novkov, Ronald Gulino
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Publication number: 20040168923Abstract: A device and method are provided for producing negatively charged nanoparticles. The device comprises a power supply, an electron supermicroemitter and a controller, the power supply connects with the electron supermicroemitter and the controller respectively. The potential of the electron supermicroemitter to the ground is controlled in the range of −2 kV to −29 kV by the power supply and the controller in accordance with the shape, size and different application of the materials of the emitter, so as to form field electron emitting of tunneling effect. The energy of electrons with high current density produced by the emitter can be adjusted during the electrons' colliding with particles in aerosol such that the electrons are attached to the nanoparticles of different size with wider energy band to form negatively charged nanoparticles.Type: ApplicationFiled: January 12, 2004Publication date: September 2, 2004Inventors: Moxi Fang, Yue Sun
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Patent number: 6755953Abstract: In order to preventing thiol-coated metal particles from being liberated from a self-aligning membrane on a substrate during coating the metal particles deposited on the self-aligning membrane with thiol molecules, this invention provides a process for forming a metal particle ordered structure wherein a voltage is applied on the substrate for preventing the metal particles from being liberated from the self-aligning membrane during coating the metal particles deposited on the self-aligning membrane on the substrate with thiol molecules.Type: GrantFiled: June 12, 2002Date of Patent: June 29, 2004Assignees: NEC Corporation, Japan Science and Technology CorporationInventor: Masakazu Baba
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Patent number: 6695960Abstract: The invention concerns a method comprising a step which consists in producing, on a precursor alloy powder containing at least the elements Cr, Al and Y, using a chemical or electrolytic deposition bath, a deposition containing at least a modifying element such as platinum, palladium, ruthenium or rhenium. The modifying element enhances the capacity of the coating to form from phase &bgr;, by exposure to oxygen at high temperature, an adhesive alumina surface barrier. The invention is useful for protecting against corrosion and oxidation at high temperatures aviation turbine blades.Type: GrantFiled: June 14, 2001Date of Patent: February 24, 2004Assignee: Onera (Office National d' Etudes et de Recherchers Aerospatiales)Inventors: Marie Pierre Bacos, Pierre Josso
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Publication number: 20040031690Abstract: The present invention has its object to provide a manufacturing device for making conductive particles that efficiently permit a placed layer of uniform thickness to be formed over each of all particles without aggregating the particles in a plating liquid.Type: ApplicationFiled: March 6, 2003Publication date: February 19, 2004Applicant: SEKISUI CHEMICAL CO., LTD.Inventors: Yoshiaki Tanaka, Yoshiaki Kodera, Manabu Matsubara, Kazuhiko Kanki, Tatsuo Suzuki, Kazuo Ukai
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Patent number: 6676821Abstract: Amorphous and/or crystalline oxides of metals of the third to fifth main group or subgroups of the periodic table are obtained in particulate form by an electrochemical process. The process is characterized in that ions of the metal dissolved in an organic electrolyte are electrochemically reduced on a cathode in the presence of an oxidizing agent.Type: GrantFiled: December 4, 2001Date of Patent: January 13, 2004Assignee: Henkel Kommanditgesellschaft AufInventors: Rolf Hempelmann, Harald Natter
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Publication number: 20030178313Abstract: The present invention has its object to provide a manufacturing device for making conductive particles that efficiently permit a placed layer of uniform thickness to be formed over each of all particles without aggregating the particles in a plating liquid.Type: ApplicationFiled: December 18, 2002Publication date: September 25, 2003Applicant: Sekisui Chemical Co., Ltd.Inventors: Yoshiaki Tanaka, Yoshiaki Kodera, Manabu Matsubara, Kazuhiko Kanki, Tatsuo Suzuki, Kazuo Ukai
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Publication number: 20020189952Abstract: In order to preventing thiol-coated metal particles from being liberated from a self-aligning membrane on a substrate during coating the metal particles deposited on the self-aligning membrane with thiol molecules, this invention provides a process for forming a metal particle ordered structure wherein a voltage is applied on the substrate for preventing the metal particles from being liberated from the self-aligning membrane during coating the metal particles deposited on the self-aligning membrane on the substrate with thiol molecules.Type: ApplicationFiled: June 12, 2002Publication date: December 19, 2002Inventor: Masakazu Baba
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Patent number: 6274021Abstract: The invention relates to a method and an apparatus for producing an electrode coating. The fundamental idea of the invention is to regulate in a time-defined manner at any instant during an electrolytic deposition process the concentration of the electrolyte constituents and additives in that in the electrolytic bath are provided additional electrodes, through which specific electrolyte constituents and/or additives can be taken up and/or delivered in time-controlled manner.Type: GrantFiled: August 27, 1999Date of Patent: August 14, 2001Assignees: Stadtwerke Karlsruhe GmbH, EnBW Regional GmbHInventor: Hans Juergen Pauling
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Patent number: 6224734Abstract: The invention provides novel mepiquat plant growth regulator compositions which have improved hygroscopicity and corrosion characteristics. The novel mepiquat plant growth regulator compositions of the invention can be readily prepared from technical mepiquat chlorid inter alia by electrochemical ion exchange processes or by quaternization of N-methylpiperidine with dimethylcarbonate as starting material.Type: GrantFiled: September 22, 1999Date of Patent: May 1, 2001Assignees: BASF Aktiengesellschaft, BASF CorporationInventors: Reiner Kober, David G. Hobbs, Scott W. Gibson, Kenneth Eugene Fersch, Wilhelm Rademacher, Jörg Botzem, Markus Frede, Matthias Dernbach, Reimer Göttsche, Reinhard Dötzer
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Patent number: 6203732Abstract: A generally tubular device (e.g., a stent or catheter) for placement in a lumen of a patient's body is made by forming a depressed pattern in an external surface of a mold. The depressed pattern corresponds to a desired shape of the generally tubular device. A material is deposited in the depressed pattern for the material to form the generally tubular device conforming to the depressed pattern. The generally tubular device is separated from the mold.Type: GrantFiled: July 2, 1998Date of Patent: March 20, 2001Assignee: Intra Therapeutics, Inc.Inventors: Elizabeth A. Clubb, Thomas L. Clubb, James V. Donadio, III
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Patent number: 5837119Abstract: Methods for forming pastes of dendrites particles coated with an electrically conductive coating are described. A surface is placed in contact with an electrolytic or electroless plating solution. Dendrites are formed on the surface. The dendrites are exposed to another plating solution to plate a coating on the surface of the dendrites. The coated dendrites are removed from the surface to form a powder of coated dendrites. The powder is added to a polymer material to form a paste which is heated to fuse the dendrite surfaces to form a network of interconnected dendrites and further heated to cure the polymer. When the paste is disposed between adjacent electrically conductive surfaces, the coated dendrites fuse to the electrically conductive surface to form electrical interconnections.Type: GrantFiled: August 9, 1996Date of Patent: November 17, 1998Assignee: International Business Machines CorporationInventors: Sung Kwon Kang, Sampath Purushothaman, George Frederick Walker
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Patent number: 5789348Abstract: A process for the preparation of a precursor metallic powder composition for use in the subsequent formation of a superconductor. The process comprises the steps of providing an electrodeposition bath comprising an electrolyte medium and a cathode substrate electrode, and providing to the bath one or more soluble salts of one or more respective metals which are capable of exhibiting superconductor properties upon subsequent appropriate treatment. The bath is continually energized to cause the metallic and/or reduced particles formed at the electrode to drop as a powder from the electrode into the bath, and this powder, which is a precursor powder for superconductor production, is recovered from the bath for subsequent treatment. The process permits direct inclusion of all metals in the preparation of the precursor powder, and yields an amorphous product mixed on an atomic scale to thereby impart inherent high reactivity.Type: GrantFiled: November 14, 1994Date of Patent: August 4, 1998Assignee: Midwest Research InstituteInventor: Raghunath Bhattacharya
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Patent number: 5785837Abstract: A process for the preparation by electrodeposition of metal oxide film and powder compounds for ferroelectric memory materials and ferrites wherein the metal oxide includes a plurality of metals. The process comprises providing an electrodeposition bath, providing soluble salts of the metals to this bath, electrically energizing the bath to thereby cause formation of a recoverable film of metal on the electrode, recovering the resultant film as a film or a powder, and recovering powder formed on the floor of the bath. The films and powders so produced are subsequently annealed to thereby produce metal oxide for use in electronic applications. The process can be employed to produce metal-doped metal oxide film and powder compounds for transparent conductors. The process for preparation of these metal-doped metal oxides follows that described above.Type: GrantFiled: January 2, 1996Date of Patent: July 28, 1998Assignee: Midwest Research InstituteInventors: Raghu Nath Bhattacharya, David S. Ginley
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Patent number: 5670033Abstract: This invention is directed to a process for making copper metal powder from copper-bearing material, comprising: (A) contacting said copper-bearing material with an effective mount of at least one aqueous leaching solution to dissolve copper ions in said leaching solution and form a copper-rich aqueous leaching solution; (B) contacting said copper-rich aqueous leaching solution with an effective amount of at least one water-insoluble extractant to transfer copper ions from said copper-rich aqueous leaching solution to said extractant to form a copper-rich extractant and a copper-depleted aqueous leaching solution; (C) separating said copper-rich extractant from said copper-depleted aqueous leaching solution; (D) contacting said copper-rich extractant with an effective amount of at least one aqueous stripping solution to transfer copper ions from said extractant to said stripping solution to form a copper-rich stripping solution and a copper-depleted extractant; (E) separating said copper-rich stripping solutiType: GrantFiled: October 18, 1995Date of Patent: September 23, 1997Assignee: ElectroCopper Products LimitedInventors: David P. Burgess, Wendy M. Gort, Ronald K. Haines, Jackson G. Jenkins, Stephen J. Kohut, Peter Peckham
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Patent number: 5578183Abstract: Uniform zinc pellets are formed for use in batteries having a stationary or moving slurry zinc particle electrode. The process involves the cathodic deposition of zinc in a finely divided morphology from battery reaction product onto a non-adhering electrode substrate. The mossy zinc is removed from the electrode substrate by the action of gravity, entrainment in a flowing electrolyte, or by mechanical action. The finely divided zinc particles are collected and pressed into pellets by a mechanical device such as an extruder, a roller and chopper, or a punch and die. The pure zinc pellets are returned to the zinc battery in a pumped slurry and have uniform size, density and reactivity. Applications include zinc-air fuel batteries, zinc-ferricyanide storage batteries, and zinc-nickel-oxide secondary batteries.Type: GrantFiled: May 11, 1995Date of Patent: November 26, 1996Assignee: Regents of the University of CaliforniaInventor: John F. Cooper
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Patent number: 5520792Abstract: This invention is directed to a process for making copper metal powder from copper-bearing material, comprising: (A) contacting said copper-beating material with an effective amount of at least one aqueous leaching solution to dissolve copper ions in said leaching solution and form a copper-rich aqueous leaching solution; (B) contacting said copper-rich aqueous leaching solution with an effective amount of at least one water-insoluble extractant to transfer copper ions from said copper-rich aqueous leaching solution to said extractant to form a copper-rich extractant and a copper-depleted aqueous leaching solution, said extractant comprising (i) at least one oxime characterized by a hydrocarbon linkage with at least one --OH group and at least one .dbd.Type: GrantFiled: March 30, 1995Date of Patent: May 28, 1996Assignee: ElectroCopper Products LimitedInventors: David P. Burgess, Wendy M. Gort, Ronald K. Haines, Jackson G. Jenkins, Stephen J. Kohut, Peter Peckham
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Patent number: 5462647Abstract: A process for the preparation of lead-zirconium-titanium (PZT) film and powder compositions. The process comprises the steps of providing an electrodeposition bath, providing soluble salts of lead, zirconium and titanium metals to this bath, electrically energizing the bath to thereby direct ions of each respective metal to a substrate electrode and cause formation of metallic particles as a recoverable film of PZT powder on the electrode, and also recovering the resultant film as a powder. Recovery of the PZT powder can be accomplished by continually energizing the bath to thereby cause powder initially deposited on the substrate-electrode to drop therefrom into the bath from which it is subsequently removed. A second recovery alternative comprises energizing the bath for a period of time sufficient to cause PZT powder deposition on the substrate-electrode only, from which it is subsequently recovered.Type: GrantFiled: September 9, 1994Date of Patent: October 31, 1995Assignee: Midwest Research InstituteInventors: Raghu N. Bhattacharya, David S. Ginley
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Patent number: 5458746Abstract: This invention is directed to a process for making copper metal powder from copper-bearing material, comprising: (A) contacting said copper-bearing material with an effective amount of at least one aqueous leaching solution to dissolve copper ions in said leaching solution and form a copper-rich aqueous leaching solution; (B) contacting said copper-rich aqueous leaching solution with an effective amount of at least one water-insoluble extractant to transfer copper ions from said copper-rich aqueous leaching solution to said extractant to form a copper-rich extractant and a copper-depleted aqueous leaching solution, said extractant comprising (i) at least one oxime characterized by a hydrocarbon linkage with at least one --OH group and at least one .dbd.Type: GrantFiled: August 9, 1994Date of Patent: October 17, 1995Assignees: Magma Copper Company, Gould Electronics Inc.Inventors: David P. Burgess, Wendy M. Gort, Ronald K. Haines, Jackson G. Jenkins, Stephen J. Kohut, Peter Peckham
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Patent number: 5413987Abstract: A process for the preparation of a precursor metallic powder composition for use in the subsequent formation of a superconductor. The process comprises the steps of providing an electrodeposition bath comprising an electrolyte medium and a cathode substrate electrode, and providing to the bath one or more soluble salts of one or more respective metals, such as nitrate salts of thallium, barium, calcium, and copper, which are capable of exhibiting superconductor properties upon subsequent appropriate treatment. The bath is continually energized to cause the metallic particles formed at the electrode to drop as a powder from the electrode into the bath, and this powder, which is a precursor powder for superconductor production, is recovered from the bath for subsequent treatment. The process permits direct inclusion of thallium in the preparation of the precursor powder, and yields an amorphous product mixed on an atomic scale to thereby impart inherent high reactivity.Type: GrantFiled: January 24, 1994Date of Patent: May 9, 1995Assignee: Midwest Research InstituteInventors: Raghunath Bhattacharya, Richard D. Blaugher
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Patent number: 5370784Abstract: A process for electrolytic production of fine-grained, single-phase, metallic alloy powders, especially powders of intermetallic compounds as well as noble metal alloy powders, is described in which powdery metallic precipitates are galvanically produced on the cathode from an electrolytic precipitating bath known in the art, which contains in solution the metals to be precipitated, under electrolysis conditions causing a powder precipitation known in the art. For the production of alloy powders with defined properties, it is determined, first in preliminary tests by gradual increase of the cathode potential with otherwise constant process parameters, the minimum cathode potential at which single-phase alloy powders result and then the powder precipitation is potentiostatically performed in a cathode potential at or above the minimum for the single-phase alloy precipitation.Type: GrantFiled: June 25, 1993Date of Patent: December 6, 1994Assignee: Schott GlaswerkeInventors: Roland Kammel, Gunther Schulz, Andreas Specht, Christian Keidel, Uwe Landau