Palladium Base Patents (Class 420/463)
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Patent number: 7569511Abstract: An alcohol steam reforming catalyst for generating hydrogen contains palladium, yttrium, and at least one of cerium and a metal oxide. The catalyst displays both an improved alcohol conversion rate and improved carbon dioxide selectivity. Methods of making and using the alcohol steam reforming catalyst are described.Type: GrantFiled: May 5, 2006Date of Patent: August 4, 2009Assignee: BASF Catalysts LLCInventors: Christopher R. Castellano, Ye Liu, Ahmad Moini, Gerald Stephen Koermer, Robert Joseph Farrauto
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Publication number: 20090191087Abstract: Ultra-low magnetic susceptibility, biocompatible palladium-tin, palladium-aluminum, and palladium-tantalum alloys include at least 75 at % palladium, between about 3 and 20 at % tin, aluminum, or tantalum, respectively, and one or more other additives chosen from niobium, tungsten, molybdenum, zirconium, titanium, tin for non-palladium-tin alloys, aluminum for non-palladium-aluminum alloys, or tantalum for non-palladium-tantalum alloys, up to about 22 at % total.Type: ApplicationFiled: January 23, 2009Publication date: July 30, 2009Applicant: Deringer-Ney, Inc.Inventors: Arthur S. Klein, Edward F. Smith, III, Peter Hale
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Publication number: 20090181183Abstract: A metal nanoparticle composition includes a thermally decomposable or UV decomposable stabilizer. A method of forming conductive features on a substrate, includes providing a solution containing metal nanoparticles with a stabilizer; and liquid depositing the solution onto the substrate, wherein during the deposition or following the deposition of the solution onto the substrate, decomposing and removing the stabilizer, by thermal treatment or by UV treatment, at a temperature below about 180° C. to form conductive features on the substrate.Type: ApplicationFiled: January 14, 2008Publication date: July 16, 2009Applicant: XEROX CORPORATIONInventors: Yuning LI, Yiliang WU, Hualong PAN, Ping LIU, Paul F. SMITH, Hadi K. MAHABADI
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Publication number: 20090075815Abstract: An object of the present invention is to provide tetrahedral fine palladium particles having a high degree of shape selectivity, and a process for producing fine metal particles.Type: ApplicationFiled: March 9, 2007Publication date: March 19, 2009Applicants: N.E. CHEMCAT CORPORATION, OSAKA UNIVERSITYInventors: Kiyotomi Kaneda, Takashi Ito
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Patent number: 7498286Abstract: The present invention includes an apparatus, system and method for screening and making one or more electrocatalysts, electrocatalyst arrays, electrodes and catalysts for an oxygen reduction reaction with a Group VIII noble metal in contact with a component-M o form a Group VIII noble metal-M alloy, wherein component-M is one or more metals selected from Groups IIIA, IVA, VIII, IB, IIB, VB, VIB, VIIB and VIIIB of the Periodic Table.Type: GrantFiled: November 14, 2005Date of Patent: March 3, 2009Assignee: Board of Regents, The University of Texas SystemInventors: Arumugam Manthiram, Raghuveer Vadari, Allen J. Bard
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Publication number: 20090035852Abstract: Stable atomic quantum clusters, AQCs, characterized by being composed of at least 500 metal atoms, its production process characterized by having a kinetic control and by maintaining a low concentration of reagents in the reaction medium, as well as the uses of these clusters as sensors (fluorescent, magnetic or chemical), electrocatalysts and as cytostatics and/or cytotoxics.Type: ApplicationFiled: July 28, 2006Publication date: February 5, 2009Applicant: UNIVERSIDADE DE SANTIAGO DE COMPOSTELAInventors: Manuel Arturo Lopez Quintela, Jose Rivas Rey
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Patent number: 7468340Abstract: A metal-supported porous carbon film wherein metal fine particles with a mean particle diameter of 0.7-20 nm are dispersed and supported on pore surface walls, fuel cell electrodes employing the metal-supported porous carbon film, a membrane-electrode assembly comprising the fuel cell electrodes bonded on both sides of a polymer electrolyte film, and a fuel cell comprising the fuel cell electrode as a constituent element. The support structure is such that metal fine particles having a controlled particle size are uniformly supported to allow effective utilization of the metal-based catalyst, and the fabrication steps are simple.Type: GrantFiled: April 8, 2004Date of Patent: December 23, 2008Assignee: Ube Industries, Ltd.Inventors: Shyusei Ohya, Yuuichi Fujii, Makoto Matsuo, Jun Takagi
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Publication number: 20080305353Abstract: The present invention provides a method for forming compositions having a plurality of ultra-fine metallic particles, and the metallic composition produced therewith. Also provided is a substrate coated with the plurality of ultra-fine metallic particles obtained in accordance with the method of the present invention.Type: ApplicationFiled: July 7, 2008Publication date: December 11, 2008Applicant: Clarkson UniversityInventors: Dan V. Goia, Daniel Andreescu, Christopher Eastman
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Publication number: 20080279717Abstract: A family of alloys for use in medical, electrical contact and jewelry applications includes as primary components palladium, and boron and at least one of ruthenium, rhenium, platinum, gold, zirconium, tungsten, cobalt, nickel, tantalum and iridium. An alternative embodiment includes palladium and rhenium and/or ruthenium with an additional element iridium, platinum, tungsten, boron, gold, zirconium, cobalt, nickel and tantalum. The present alloy family has a high strength, high radio opacity, and biocompatibility characteristics, while also being workable into various configurations. Where required, some of the alloys also offer post form, heat treatment (age hardening) capabilities for even higher hardness and strength levels.Type: ApplicationFiled: October 31, 2007Publication date: November 13, 2008Inventors: Arthur S. Klein, Edward F. Smith, III
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Publication number: 20080190865Abstract: A stabilized, chemically reactive, metallic nano-material effective for degradation of chlorinated organic compounds in soils, sediments and groundwater. The nano-material is composed of a magnetic metal nanoparticle and a carbohydrate stabilizer bound to the nanoparticle. The preferred metal nanoparticle is iron and the preferred carbohydrate stabilizer is either a starch or a water soluble cellulose such as sodium carboxymethyl cellulose. The nanoparticle may be either mono-metallic, bi-metallic or multi-metallic in nature, but is preferably bi-metallic wherein it is coated with a secondary catalytic metal coating, preferably palladium. A method of making the metallic nano-material is further disclosed wherein a solution of the metal nanoparticle and carbohydrate stabilizer is prepared, and the nanoparticle is then reduced under inert conditions.Type: ApplicationFiled: June 30, 2005Publication date: August 14, 2008Inventors: Dongye Zhao, Feng He
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Publication number: 20080166259Abstract: It is aimed at creating noble metal nanoparticles having novel shapes, sizes, and arrangements usable for catalysts, electrodes, and the like. Micelles made into rod-like shapes having semicylindrical cross-sections are formed on a carrier substrate in a self-creating manner and immobilized thereon; noble metal ions are added and diffused in the micelles to complex the micelles with noble metal ions; and a reducing agent is subsequently caused to act thereon to progress a reductive reaction of noble metal within the immobilized micelles as reaction fields, thereby growing single crystalline noble metal ultrathin-film nanoparticles on the carrier substrate by utilizing the fixed micelles having the shapes as templates, respectively.Type: ApplicationFiled: March 1, 2006Publication date: July 10, 2008Applicant: JAPAN SCIENCE AND TECHNOLOGY AGENCYInventors: Tsuyoshi Kijima, Hideya Kawasaki
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Publication number: 20080152534Abstract: Raman-active nanoclusters comprised of a metal and a Raman-active organic molecule incorporated therein that are capable of self-assembly are described. The Raman-active nanoclusters are capable of acting as sensitive reporters for analyte detection. A metal that enhances the Raman signal from the organic Raman-active compound is inherent in the nanocluster. A variety of organic Raman-active compounds and mixtures of compounds can be incorporated into the nanocluster.Type: ApplicationFiled: December 21, 2006Publication date: June 26, 2008Inventors: Jingwu Zhang, Xing Su, Lei Sun, Haovu Qin
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Patent number: 7381368Abstract: A palladium-boron composition and methods of making and using same are provided. In one aspect, the invention comprises an alloy comprising palladium and boron, the boron being in solid solution in the palladium and the alloy having a two-phase structure, wherein each phase of the two-phase structure has the same crystal structure as the other phase and has a different set of lattice parameters from the other phase such that the palladium is greatly hardened by the presence of the smaller phase crystals within the spaces between the larger phase crystals. The composition is carefully prepared by a process wherein palladium and an amount of boron sufficient to place the boron in solid solution, but insufficient to combine with the palladium, are placed together and repeatedly are melted, cooled and turned over until sufficiently mixed.Type: GrantFiled: August 23, 2004Date of Patent: June 3, 2008Assignee: The United States of America as represented by the Secretary of the NavyInventors: Melvin H. Miles, M. Ashraf Imam
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Publication number: 20080099175Abstract: A method for in-gas micro/nanoimprinting of bulk metallic glass includes steps of preparing a die, heating the bulk metallic glass and in-gas micro/nanoimprinting of the bulk metallic glass. In the step of preparing a die, the die has a micro/nano structure having multiple depressions and a flow channel connected to the depressions. In the step of heating the bulk metallic glass, the bulk metallic glass is heated to a temperature between a glass transition temperature and a crystallization temperature of the bulk metallic glass. In the step of in-gas micro/nanoimprinting, the bulk metallic glass is forced into the die in presence of gas to imprint a complementing micro/nano structure on the bulk metallic glass. Because the die has a flow channel to allow air or gas to escape from the micro/nano structure of the die, the micro/nanoimprinting can be performed in presence of air or gas.Type: ApplicationFiled: April 27, 2007Publication date: May 1, 2008Inventors: Jinn P. Chu, Hadi Wijaya, Chun-Ling Chiang, Chih-Wei Wu
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Patent number: 7354488Abstract: A family of alloys for use in medical, electrical contact and jewelry applications includes as primary components palladium, and boron and at least one of ruthenium, rhenium, platinum, gold, zirconium, tungsten, cobalt, nickel, tantalum and iridium. An alternative embodiment includes palladium and rhenium and/or ruthenium with an additional element iridium, platinum, tungsten, boron, gold, zirconium, cobalt, nickel and tantalum. The present alloy family has a high strength, high radio opacity, and biocompatibility characteristics, while also being workable into various configurations. Where required, some of the alloys also offer post form, heat treatment (age hardening) capabilities for even higher hardness and strength levels.Type: GrantFiled: May 10, 2005Date of Patent: April 8, 2008Assignee: Deringer-Ney, Inc.Inventors: Arthur S. Klein, Edward F. Smith, III
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Publication number: 20080070058Abstract: An alloy is provided based on a palladium-cobalt binary system, has a coefficient of thermal expansion (CTE) of about 14.0 to about 15.5 and may include one or more of the following additive metals: aluminum, boron, chromium, gallium, lithium, rhenium, ruthenium, silicon, tantalum, titanium, and tungsten.Type: ApplicationFiled: August 28, 2007Publication date: March 20, 2008Applicant: Ivoclar Vivadent, Inc.Inventors: Tridib Dasgupta, Clyde Ingersoll, George Tysowsky
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Publication number: 20080063556Abstract: The invention relates to a high-hardness palladium alloy for manufacturing semi-finished products to be used in goldsmith's art or jewels to be obtained by the lost wax casting method, which comprises, in the following concentrations, expressed in thousandths by weight (%) palladium from 948 to 990%; copper from 0.0 a 50%; indium from 0.0 to 50%; gallium from 1 to 48%; aluminium from 0.8 to 49.5%; ruthenium from 0.0 to 50%; rhenium from 0.0 to 50%; silicon from 0.1 to 1.2%; platinum from 0.0 to 40%; nickel from 0.0 to 50%; iridium from 0.0 to 40%. In the manufacturing process of the above alloy, the component elements of said alloy are placed in a crucible, respectively made of zirconia, boron nitride or other ceramic material, and are melted using the induction method and using a protective atmosphere, respectively of argon, nitrogen or other inert gas.Type: ApplicationFiled: August 31, 2006Publication date: March 13, 2008Inventor: PAOLO BATTAINI
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Patent number: 7229510Abstract: A manganese alloy sputtering target characterized in that oxygen is 1000 ppm or less, sulfur is 200 ppm or less and a forged texture is provided, and a method for producing a forged manganese alloy target stably by eliminating the drawbacks of manganese alloy that it is susceptible to cracking and has a low rupture strength. A manganese alloy sputtering target which can form a thin film exhibiting high characteristics and high corrosion resistance while suppressing generation of nodules or particles is thereby obtained.Type: GrantFiled: February 18, 2002Date of Patent: June 12, 2007Assignee: Nippon Mining & Metals, Co., Ltd.Inventor: Yuichiro Nakamura
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Patent number: 6984358Abstract: A method for producing diffusion bonds between components formed of tungsten heavy alloy (WHA) uses aid material to accelerate diffusion across the joint surfaces. The aid material consists of an alloy of palladium (Pd) with one or more of the secondary elements of nickel (Ni), iron (Fe), or cobalt (Co). The secondary elements are selected to correspond to the secondary elements present in the components. The diffusion bonding is carried out by placing diffusion aid material between the joint surfaces of adjacent components, applying a pressure across the joint surfaces, and processing the assembly through a thermal profile. Structures of WHA with complex shapes, interior volumes and/or large sizes can be formed. The joint properties are equal to or superior to those of the parent material of the components.Type: GrantFiled: September 13, 2002Date of Patent: January 10, 2006Assignee: Lockheed Martin CorporationInventor: William R. Spencer
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Patent number: 6982059Abstract: An alloy and a gas turbine engine component comprising an alloy are presented, with the alloy comprising: palladium, in an amount ranging from about 1 atomic percent to about 41 atomic percent; platinum, in an amount that is dependent upon the amount of palladium, such that a. for the amount of palladium ranging from about 1 atomic percent to about 14 atomic percent, the platinum is present up to about an amount defined by the formula (40+X) atomic percent, wherein X is the amount in atomic percent of the palladium, and b. for the amount of palladium ranging from about 15 atomic percent up to about 41 atomic percent, the platinum is present in an amount up to about 54 atomic percent; and the balance comprising rhodium, wherein the rhodium is present in an amount of at least 24 atomic percent; wherein the alloy comprises a microstructure that is essentially free of L12-structured phase at a temperature greater than about 1000° C.Type: GrantFiled: October 1, 2001Date of Patent: January 3, 2006Assignee: General Electric CompanyInventors: Jiang Liang, Melvin Robert Jackson, Charles Gitahi Mukira, Mark Daniel Gorman
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Patent number: 6913657Abstract: A hard precious metal alloy member is constituted of a gold alloy, which has a gold Au content of from 37.50 to 98.45 wt %, and contains a hardening additive in a range of not less than 50 ppm but less than 15,000 ppm, wherein the hardening additive is constituted of gadolinium Gd only, or gadolinium Gd and at least one element selected from the group consisting of rare-earth elements other than Gd, alkaline-earth elements, silicon Si, aluminum Al, and boron B.Type: GrantFiled: March 4, 2002Date of Patent: July 5, 2005Inventor: Kazuo Ogasa
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Publication number: 20040074336Abstract: A novel method for preparing fine particles comprising a transition metal and a noble metal which are monodispersed and have almost no particle diameter distribution, and are transferable to a CuAu-I type L10 ordered phase, with safety and at a low cost, wherein a salt or a complex of at least one transition metal selected from Fe and Co and a salt or a complex of at least one transition metal selected from Pt and Pd (exclusive of the combination of Co-Pd) is dissolved in an organic solvent miscible with water or an alcohol in the presence of an organic protecting agent, and the resultant solution is heated under reflux in the presence of an alcohol in an inert atmosphere, to thereby prepare a binary alloy comprising a transition metal and a noble metal, or a salt or a complex of at least one element selected from the group consisting of Cu, Bi, Sb, Sn, Pb and Ag is further dissolved in the above solvent and the resultant solution is heated under reflux in the presence of an alcohol in an inert atmosphere, toType: ApplicationFiled: December 3, 2003Publication date: April 22, 2004Inventors: Hideo Daimon, Yukiko Kurobe, Naoki Toshima
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Publication number: 20030034097Abstract: A hard precious metal alloy member is constituted of a gold alloy, which has a gold Au content of from 37.50 to 98.45 wt %, and contains a hardening additive in a range of not less than 50 ppm but less than 15,000 ppm, wherein the hardening additive is constituted of gadolinium Gd only, or gadolinium Gd and at least one element selected from the group consisting of rare-earth elements other than Gd, alkaline-earth elements, silicon Si, aluminum Al, and boron B.Type: ApplicationFiled: March 4, 2002Publication date: February 20, 2003Inventor: Kazuo Ogasa
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Publication number: 20020114725Abstract: A palladium-boron composition and methods of making and using same are provided. In one aspect, the invention comprises an alloy comprising palladium and boron, the boron being in solid solution in the palladium and the alloy having a two-phase structure, wherein each phase of the two-phase structure has the same crystal structure as the other phase and has a different set of lattice parameters from the other phase such that the palladium is greatly hardened by the presence of the smaller phase crystals within the spaces between the larger phase crystals. The composition is carefully prepared by a process wherein palladium and an amount of boron sufficient to place the boron in solid solution, but insufficient to combine with the palladium, are placed together and repeatedly arc melted, cooled and turned over until sufficiently mixed.Type: ApplicationFiled: March 8, 2002Publication date: August 22, 2002Inventors: Melvin H. Miles, M. Ashraf Imam
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Patent number: 6290501Abstract: The invention relates to silver-palladium alloys for the manufacture of dental prostheses which can be faced with dental ceramic. Because of selected contents of the alloy elements indium, tin and zinc, these cause no discolorations when combined with low-melting dental ceramic with a coefficient of thermal expansion of approx. 16.5 &mgr;m/mK.Type: GrantFiled: December 2, 1999Date of Patent: September 18, 2001Assignee: Degussa-Huls AktiengesellschaftInventors: Franz Josef Grau, Joseph Maria Van Der Zel
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Patent number: 6247565Abstract: The invention relates to a composition and a process for the reactive brazing of ceramic materials containing alumina. This composition comprises at least one precious metal chosen from among Pd, Pt and Au, as well as magnesium, preferably at the most 5 wt. % magnesium. Brazing takes place at a temperature of 1300 to 1600° C., in the absence of hydrogen.Type: GrantFiled: December 16, 1999Date of Patent: June 19, 2001Assignee: Commissariat a l'Energie AtomiqueInventors: François Saint-Antonin, Gérard Bourgeois
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Patent number: 6096263Abstract: A novel intermetallic superconductor with surprisingly high transition temperature is disclosed. The material comprises B and C, and can form a bulk superconductor. Exemplary of the novel superconductors is material of nominal composition YPd.sub.5 B.sub.3 C.sub.x, with x chosen such that the C:B ratio is in the range 0.05-2. An exemplary bulk sample of such composition has T, (onset) of 22.5 K, with more than 15 volume % of the sample being superconducting.Type: GrantFiled: December 10, 1993Date of Patent: August 1, 2000Assignee: Lucent Technologies Inc.Inventors: Robert Joseph Cava, James Joseph Krajewski
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Patent number: 6074603Abstract: A novel intermetallic superconductor with surprisingly high transition temperature is disclosed. The material comprises B and C, and can form a bulk superconductor. Exemplary of the novel superconductors is material of nominal composition YPd.sub.5 B.sub.3 C.sub.x, with x chosen such that the C:B ratio is in the range 0.05-2. An exemplary bulk sample of such composition has T.sub.c (onset) of 22.5 K, with more than 15 volume % of the sample being superconducting.Type: GrantFiled: July 12, 1999Date of Patent: June 13, 2000Assignee: Lucent Technologies Inc.Inventors: Robert Joseph Cava, James Joseph Krajewski
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Patent number: 5849113Abstract: High temperature coefficient of resistance (TCR) appropriate for the sensor evices is attained by an alloy consisting, by atomic %, of from 5 to 65% of Fe, and from 0.01 to 20% in total of at least one auxiliary component selected from the group consisting of 20% or less of Ni, 20% or less of Co, 20% or less of Ag, 20% or less of Au, 20% or less of Pt, 10% or less of Rh, 10% or less of Ir, 10% or less of Os, 10% or less of Ru, 10% or less of Cr, 5% or less of V, 5% or less of Ti, 5% or less of Zr, 5% or less of Hf, 8% or less of Mo, 5% or less of Nb, 10% or less of W, 8% or less of Ta, 3% or less of Ga, 3% or less of Ge, 3% or less of In, 3% or less of Be, 5% or less of Sn, 3% or less of Sb, 5% or less of Cu, 5% or less of Al, 5% or less of Si, 2% or less of C, 2% or less of B, and 5% or less of a rare earth element, the balance being essentially Pd and minor amount of impurities, and said alloy having 4000.times.10.sup.-6.degree. C..sup.-1 or more of TCR in a temperature range of from 0.degree. to 200.Type: GrantFiled: September 27, 1996Date of Patent: December 15, 1998Assignee: The Foundation: The Research Institute of Electric and Magnetic AlloysInventors: Yuetsu Murakami, Katashi Masumoto, Naoji Nakamura
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Patent number: 5682383Abstract: An arrangement for interconnecting groups of users into collision domains in a Local Area Network such as an Ethernet comprises a plurality of repeater groups, with each repeater group being connected to a group of user stations. The arrangement also comprises an electronically reconfigurable switch matrix. The switch matrix comprises a plurality of segment lines (or other transmission media) each of which is used to form one collision domain or Ethernet segment. Switch elements under the control of a microcontroller selectively connect particular repeater groups (and the associated user groups) to particular segment lines to form Ethernet segments, each Ethernet segment being a single collision domain. Internetworking devices such as bridges and routers may also be connected to the switch matrix to interconnect particular collision domains.Type: GrantFiled: December 9, 1996Date of Patent: October 28, 1997Assignee: Standard Microsystems CorporationInventors: Ashraf Mansur Dahod, Erick R. Diaz, Camillo Iadevaia, Ronald Sulyma, Colin Michael Taddonio
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Patent number: 5637274Abstract: The present invention provides a Pd alloy thin wire for wire bonding semiconductor elements comprising Ca, Al, Cr and Si each in an amount of up to 0.0003% by weight, from 0.001 to 0.01% by weight of In, optionally one or both of Au and Ag each having a purity of at least 99.99% in respective amounts of 0.001 to 2.0% by weight and 0.001 to 5.0% by weight, and the balance Pd having a purity of at least 99.99% by weight and unavoidable impurities. The Pd alloy thin wire exhibits an excellent loop shape compared with that of an Au alloy thin wire, ensures bonding reliability, and can replace an Au bonding wire.Type: GrantFiled: September 8, 1995Date of Patent: June 10, 1997Assignee: Nippon Steel CorporationInventor: Osamu Kitamura
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Patent number: 5538685Abstract: A bonding wire for a semiconductor device contains high purity Pd or Pd alloy as a base metal and 25-10000 atppm of low boiling element III having a boiling point lower than a melting point of the base metal and soluble in Pd, or contains high purity Pd or Pd alloy as a base metal and 5-500 atppm of low boiling point element IV having a boiling point lower than a melting point of the base metal and insoluble in Pd, or high purity Pd or Pd alloy as a base metal, and 5-10000 atppm of low boiling point element III and low boiling point element IV, the low boiling point element III having a boiling point lower than a melting point of the base metal and being soluble in Pd, the low boiling point element IV having a boiling point lower than a melting point of the base metal and being insoluble in Pd, the low boiling elements III and IV being present in a concentration so that (content of the low boiling point element III)/25 + (content of the low boiling element IV)/5.gtoreq.1.gtoreq.Type: GrantFiled: May 30, 1995Date of Patent: July 23, 1996Assignee: Tanaka Denshi Kogyo Kabushiki KaishaInventors: Katsuyuki Toyofuku, Ichiro Nagamatsu, Shinji Shirakawa, Hiroto Iga, Takeshi Kujiraoka, Kensei Murakami
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Patent number: 5520753Abstract: A hydrogen sensitive metal alloy contains palladium and titanium to provide a larger change in electrical resistance when exposed to the presence of hydrogen. The alloy can be used for improved hydrogen detection.Type: GrantFiled: December 30, 1994Date of Patent: May 28, 1996Assignee: The United States of America as represented by the Administrator of the National Aeronautics and Space AdministrationInventor: Gary W. Hunter
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Patent number: 5431875Abstract: A precious metal alloy for dental restorations which develops a light oxide upon firing, on a percentage weight basis at makeup, consists of 60-95 precious metal(s) selected from the group consisting of 60-855 palladium, 0-10 gold, 0-10 platinum, 0-12 silver, and mixtures thereof; 1-15 tin; 2-7 zinc; 0.005-0.2 boron; 0-2 gallium; 0-2 cobalt; 0-15 indium; 0-0.2 of a deoxidant selected from the group consisting of silicon, germanium, magnesium, aluminum, lithium, tantalum and mixtures thereof; and 0-1.0 of a grain refiner selected from the group consisting of ruthenium, iridium, rhenium, and mixtures thereof. The alloy has a liquidus temperature of not more than 1400.degree. C., and the alloy has a tensile yield strength of at least 250 Mpa and an elongation of at least 2 percent. Restorations having a porcelain coating fired on castings of the alloy evidence a light oxide color.Type: GrantFiled: May 2, 1994Date of Patent: July 11, 1995Assignee: The J. M. Ney CompanyInventors: Thomas B. Cameron, Edward F. Smith, III
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Patent number: 5424140Abstract: A palladium-based alloy is disclosed having a composition consisting essentially of nickel in the range of about 3 to about 30 atom percent, silicon in the range of about 15 to about 20 atom percent, the balance being palladium plus incidental impurities. The alloys of the present invention are particularly suited for joining stainless steels employed in orthodontic devices at brazing temperatures less than about 900.degree. C. The alloys are typically produced in the form of a foil having a thickness of at least about 150 .mu.m.Type: GrantFiled: May 23, 1991Date of Patent: June 13, 1995Assignee: AlliedSignal Inc.Inventor: Anatol Rabinkin
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Patent number: 5413755Abstract: A novel intermetallic superconductor with surprisingly high transition temperature is disclosed. Exemplary of the novel superconductor is material of overall composition Y.sub.1.5 Pd.sub.4.5 B.sub.4. A bulk sample of that composition has T.sub.c (onset) of 22.6K, with about 0.5 volume % of the sample being superconducting.Type: GrantFiled: October 26, 1993Date of Patent: May 9, 1995Assignee: AT&T Corp.Inventor: Robert J. Cava
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Patent number: 5402305Abstract: An oxidation-resistant palladium powder containing one or more alkaline earth metal elements in a total amount of at least 0.005% by weight relative to Pd. The palladium powder is useful as a conductive component of a thick-film conductive paste and the resultant conductive paste can provide internal electrodes to a multilayered ceramic capacitor with minimized structural defects such as cracks or delamination. The palladium powder is produced by spraying a palladium salt solution containing one or more alkaline earth metal elements to form droplets and heating the droplets to a temperature of at least 1000.degree. C. The preferred amount of the alkaline earth metal elements in the Pd powder is from 0.005 to 0.1% by weight relative to Pd and the preferred alkaline earth metal elements are one or more elements selected from the group consisting of Mg, Ca, Sr and Ba.Type: GrantFiled: November 29, 1993Date of Patent: March 28, 1995Assignee: Shoei Chemical Inc.Inventors: Eiichi Asada, Yuji Akimoto, Shinichi Ono, Kazurou Nagashima, Mineto Iwasaki, Masayuki Maekawa
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Patent number: 5338509Abstract: Pinning wires suitable for use in turbine blade manufacture comprise palladium alloyed with one or more noble and/or refractory metals, and are substantially more cost effective than conventional pinning wires.Type: GrantFiled: September 9, 1993Date of Patent: August 16, 1994Assignee: Johnson Matthey Public Limited CompanyInventors: Duncan R. Coupland, Mark L Doyle
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Patent number: 5298218Abstract: Palladium based dental alloys do not show unaesthetic discolorations after ceramic firing if said alloys contain 66-85% by weight palladium, 1-20% by weight gold; 0-4% by weight silver; 0-4% by weight of at least one of platinum, iron and/or cobalt; 0.5-7% by weight of each of gallium, tin and indium, whereby the amount of said components total 9-14% by weight; 0-2% by weight germanium and/or zinc; and 0-1% by weight iridium, ruthenium and/or rhenium.Type: GrantFiled: September 4, 1992Date of Patent: March 29, 1994Assignee: Degussa AktiengesellschaftInventors: Werner Groll, Doris Hathaway, Bernd Kempf, Gernot Schock
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Patent number: 5290371Abstract: A noble metal dental casting alloy for use in making dental restorations comprises 35-70 percent by weight palladium, 25-50 percent by weight silver, 0.5-10 percent by weight manganese, and 1-30 percent of at least one modifier element selected from (i) the group of gold, platinum, copper, tin, gallium, zinc, indium and cobalt in amounts of up to 15 percent by weight each, and (ii) the group of ruthenium, rhenium, aluminum, germanium, lithium, silicon, iridium, boron, tantalum and niobium in amounts of up to 5 percent by weight each. The alloy has a solidus temperature of at least 1100.degree. C., a liquidus temperature of not more than 1400.degree. C., tensile elongation of at least 2 percent, thermal expansion coefficient of at least 14.0.times.10.sup.-6 per .degree.C., Vickers hardness of at least 150, and offset yield strength at 0.2 percent of at least 250 MPa.Type: GrantFiled: October 28, 1992Date of Patent: March 1, 1994Assignee: The J. M. Ney CompanyInventors: Thomas B. Cameron, Edward F. Smith, III
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Patent number: 5244483Abstract: The apparatus includes a bushing, a cooling assembly, a sizing applicator, a glass filament gathering pad and a winder. A tip section of the bushing is provided with rows of tips having orifices from which streams of molten glass are attenuated into filaments. The tip section is recessed within an insulated frame that supports the bushing so that the insulated frame reflects heat back to the outer tip rows. The glass filaments are drawn from the bushing tips by the winder with the gathering pad functioning to gather the filaments together into a strand which is wound on the winder. Finned cooling tubes or a combination of finned cooling tubes and finless cooling tubes are located beneath the bushing in proximity to and between at least some of the rows of tips to maintain a more uniform temperature among the glass globules issuing from the tips in the various rows. The cooling tubes and fins are fabricated of an alloy having a major portion of palladium and a minor portion of ruthenium.Type: GrantFiled: April 4, 1991Date of Patent: September 14, 1993Assignee: Manville CorporationInventors: Eric J. Brosch, Randy A. Limmer, William M. Lafayette
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Patent number: 5215710Abstract: Intermetallic compounds and hydrides thereof, characterized in that they have been prepared by reacting hydrides of the elements of the main groups I, II, III and IV of the Periodic Table, magnesium hydridehalides or magnesium dialkyls having the general formula MgR.sub.2 (R=alkyl) in a solvent with bisallyl metal compounds of the metals of the subgroup VIII of the Periodic Table or of zinc or with the homologues of the bisallyl compounds of said metals, and processes for preparing said compounds.Type: GrantFiled: March 25, 1992Date of Patent: June 1, 1993Assignee: Studiengesellschaft Kohle M.b.H.Inventors: Borislav Bogdanovic, Ursula Wilczok
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Patent number: 5174954Abstract: The present invention relates to alloys containing about 50-90% palladium, 0-37% gold, 0-3% platinum, 0-35% silver, 0.5-8% gallium, 0-8% tin, and up to 0.2% of a grain refiner selected from the group consisting of iridium, rhenium and ruthenium, or mixtures thereof. In order to withstand the forces of mastication over long spans or cantilever sections, the alloys are more rigid than conventional palladium based alloys. The alloys may be utilized for conventional crown and bridgework or may be fabricated into a number of different prostheses for use on dental implants. These applications include, for example, metal base plates for dentures, metal retaining bars for removable or fixed removable dentures, full metal coverage crowns and bridges, and metal substructures to be veneered with resin or porcelain materials.Type: GrantFiled: March 1, 1991Date of Patent: December 29, 1992Assignee: Ivoclar N.A.Inventors: Stephen P. Schaffer, Patrick J. McCabe, Bernt-Roger Gustafsson
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Patent number: 5139891Abstract: A palladium alloy of the form PdNbM where M is at least one element selected from the group consisting of silicon, iron, nickel, copper, cobalt, boron and aluminum is provided. The alloys exhibit oxidation resistance and electrical contact resistance and are particularly suited for electrical applications such as coatings for electrical contacts or connectors. In a preferred embodiment, the alloy contains from about 5 to about 10 atomic percent niobium.Type: GrantFiled: July 1, 1991Date of Patent: August 18, 1992Assignee: Olin CorporationInventors: John G. Cowie, Jacob Crane, Julius C. Fister
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Patent number: 5133929Abstract: Intermetallic compounds and hydrides thereof, characterized in that they have been prepared by reacting hydrides of the elements of the main groups I, II, III and IV of the Periodic Table, magnesium hydridehalides or magnesium dialkyls having the general formula MgR.sub.2 (R=alkyl) in a solvent with bisallyl metal compounds of the metals of the subgroup VIII of the Periodic Table or of zinc or with the homologues of the bisallyl compounds of said metals, and processes for preparing said compounds.Type: GrantFiled: July 2, 1990Date of Patent: July 28, 1992Assignee: Studiengesellschaft Kohle mbHInventors: Borislav Bogdanovic, Ursula Wilczok
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Patent number: 5075076Abstract: The invention relates to a novel palladium-based alloy.This palladium-based alloy comprises tin in an amount, preferably of 5 to 20% by weight, which is sufficient to impart an acceptable resistance to corrosion by molten glass, preferably being essentially equivalent to that of platinum-rhodium 10% alloys.An alloy of this type can be used in the glass industry for making components which come into contact with molten glass, which preferably essentially contains no oxides less stable than tin oxide, such as lead oxide, because it has an excellent resistance to corrosion by molten glass and is much less expensive than the platinum-rhodium 10% alloy normally used. Moreover, by the addition of at least one element selected from platinum (0-50% by weight), rhodium (0-20% by weight), iridium (0-20% by weight) and ruthenium 0-20% by weight), the mechanical strength at high temperature, especially the creep strength, is significantly improved.Type: GrantFiled: January 8, 1990Date of Patent: December 24, 1991Assignee: Comptoir Lyon-Alemand-Louyot, Societe AnonymeInventors: Jean-Paul Guerlet, Jean-Pierre Hilger
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Patent number: 5051235Abstract: The invention relates to a novel palladium-based alloy.This palladium-based alloy comprises at least one additional element selected from indium, bismuth, silver and copper, in an amount sufficient to impart an acceptable resistance to corrosion by molten glass, preferably being essentially equivalent to that of platinum-rhodium 10% alloys.An alloy of this type can be used in the glass industry for making components which come into contact with molten glass, which preferably essentially contains no oxides less stable than the oxide of the additional element, such as lead oxide, because is has an excellent resistance to corrosion by molten glass and is less expensive than the platinum-rhodium 10% alloy normally used. Moreover, by the addition of at least one element selected from platinum (0-50% by weight), rhodium (0-20% by weight), iridium (0-20% by weight), ruthenium (0-20% by weight) and tin (0-20%), the mechanical strength at high temperature, especially the creep strength, is significantly improved.Type: GrantFiled: January 8, 1990Date of Patent: September 24, 1991Assignee: Comptoir Lyon-Alemand-Louyot, Societe AnonymeInventors: Jean-Paul Guerlet, Dan Weber
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Patent number: 5019337Abstract: Alloys suitable for dental or medical devices are disclosed. A typical alloy comprises about 35 to about 60% by weight of zirconium, about 1 to about 60% by weight of palladium and about 1 to about 60% by weight of ruthenium.Type: GrantFiled: February 16, 1990Date of Patent: May 28, 1991Assignee: American Dental Association Health FoundationInventor: Richard M. Waterstrat
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Patent number: 5011311Abstract: A dental alloy consists essentially of 60 to 85% by weight palladium, 5 to 20% by weight copper, 3 to 15% by weight gallium, and, as modifiers, 0.5 to 7% by weight gold, 0.005 to 0.02% by weight ruthenium, rhenium, iridium or a mixture of at least two of these metals, 1 to 5% by weight tin and 0 to 2% by weight nickel, wherein the sum of the modifiers is from 5.5 to 10% by weight. Dental restorations are produced by firing ceramic onto at least part of the surface of a casting of such an alloy.Type: GrantFiled: August 29, 1989Date of Patent: April 30, 1991Inventors: Brian C. Harris, Raymond Cook
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Patent number: 5005986Abstract: This invention pertains to an improved high temperature slag resistant thermocouple sheath for protecting thermocouples used to measure the temperature of synthesis gas, reducing gas, or fuel gas produced by the partial oxidation of ash-containing liquid hydrocarbonaceous and/or solid carbonaceous fuels. The protection thermocouple sheath is made from a continuous binary alloy consisting of about 30 to 70 wt. % of palladium and the remainder silver. It may be used over a temperature range of about 1000.degree. F. to 2400.degree. F.Type: GrantFiled: June 19, 1989Date of Patent: April 9, 1991Assignee: Texaco Inc.Inventors: Mitri S. Najjar, Arnulf Muan