Palladium Base Patents (Class 420/463)
  • Patent number: 7569511
    Abstract: 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: Grant
    Filed: May 5, 2006
    Date of Patent: August 4, 2009
    Assignee: BASF Catalysts LLC
    Inventors: Christopher R. Castellano, Ye Liu, Ahmad Moini, Gerald Stephen Koermer, Robert Joseph Farrauto
  • Publication number: 20090191087
    Abstract: 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: Application
    Filed: January 23, 2009
    Publication date: July 30, 2009
    Applicant: Deringer-Ney, Inc.
    Inventors: Arthur S. Klein, Edward F. Smith, III, Peter Hale
  • Publication number: 20090181183
    Abstract: 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: Application
    Filed: January 14, 2008
    Publication date: July 16, 2009
    Applicant: XEROX CORPORATION
    Inventors: Yuning LI, Yiliang WU, Hualong PAN, Ping LIU, Paul F. SMITH, Hadi K. MAHABADI
  • Publication number: 20090075815
    Abstract: 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: Application
    Filed: March 9, 2007
    Publication date: March 19, 2009
    Applicants: N.E. CHEMCAT CORPORATION, OSAKA UNIVERSITY
    Inventors: Kiyotomi Kaneda, Takashi Ito
  • Patent number: 7498286
    Abstract: 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: Grant
    Filed: November 14, 2005
    Date of Patent: March 3, 2009
    Assignee: Board of Regents, The University of Texas System
    Inventors: Arumugam Manthiram, Raghuveer Vadari, Allen J. Bard
  • Publication number: 20090035852
    Abstract: 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: Application
    Filed: July 28, 2006
    Publication date: February 5, 2009
    Applicant: UNIVERSIDADE DE SANTIAGO DE COMPOSTELA
    Inventors: Manuel Arturo Lopez Quintela, Jose Rivas Rey
  • Patent number: 7468340
    Abstract: 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: Grant
    Filed: April 8, 2004
    Date of Patent: December 23, 2008
    Assignee: Ube Industries, Ltd.
    Inventors: Shyusei Ohya, Yuuichi Fujii, Makoto Matsuo, Jun Takagi
  • Publication number: 20080305353
    Abstract: 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: Application
    Filed: July 7, 2008
    Publication date: December 11, 2008
    Applicant: Clarkson University
    Inventors: Dan V. Goia, Daniel Andreescu, Christopher Eastman
  • Publication number: 20080279717
    Abstract: 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: Application
    Filed: October 31, 2007
    Publication date: November 13, 2008
    Inventors: Arthur S. Klein, Edward F. Smith, III
  • Publication number: 20080190865
    Abstract: 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: Application
    Filed: June 30, 2005
    Publication date: August 14, 2008
    Inventors: Dongye Zhao, Feng He
  • Publication number: 20080166259
    Abstract: 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: Application
    Filed: March 1, 2006
    Publication date: July 10, 2008
    Applicant: JAPAN SCIENCE AND TECHNOLOGY AGENCY
    Inventors: Tsuyoshi Kijima, Hideya Kawasaki
  • Publication number: 20080152534
    Abstract: 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: Application
    Filed: December 21, 2006
    Publication date: June 26, 2008
    Inventors: Jingwu Zhang, Xing Su, Lei Sun, Haovu Qin
  • Patent number: 7381368
    Abstract: 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: Grant
    Filed: August 23, 2004
    Date of Patent: June 3, 2008
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Melvin H. Miles, M. Ashraf Imam
  • Publication number: 20080099175
    Abstract: 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: Application
    Filed: April 27, 2007
    Publication date: May 1, 2008
    Inventors: Jinn P. Chu, Hadi Wijaya, Chun-Ling Chiang, Chih-Wei Wu
  • Patent number: 7354488
    Abstract: 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: Grant
    Filed: May 10, 2005
    Date of Patent: April 8, 2008
    Assignee: Deringer-Ney, Inc.
    Inventors: Arthur S. Klein, Edward F. Smith, III
  • Publication number: 20080070058
    Abstract: 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: Application
    Filed: August 28, 2007
    Publication date: March 20, 2008
    Applicant: Ivoclar Vivadent, Inc.
    Inventors: Tridib Dasgupta, Clyde Ingersoll, George Tysowsky
  • Publication number: 20080063556
    Abstract: 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: Application
    Filed: August 31, 2006
    Publication date: March 13, 2008
    Inventor: PAOLO BATTAINI
  • Patent number: 7229510
    Abstract: 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: Grant
    Filed: February 18, 2002
    Date of Patent: June 12, 2007
    Assignee: Nippon Mining & Metals, Co., Ltd.
    Inventor: Yuichiro Nakamura
  • Patent number: 6984358
    Abstract: 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: Grant
    Filed: September 13, 2002
    Date of Patent: January 10, 2006
    Assignee: Lockheed Martin Corporation
    Inventor: William R. Spencer
  • Patent number: 6982059
    Abstract: 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: Grant
    Filed: October 1, 2001
    Date of Patent: January 3, 2006
    Assignee: General Electric Company
    Inventors: Jiang Liang, Melvin Robert Jackson, Charles Gitahi Mukira, Mark Daniel Gorman
  • Patent number: 6913657
    Abstract: 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: Grant
    Filed: March 4, 2002
    Date of Patent: July 5, 2005
    Inventor: Kazuo Ogasa
  • Publication number: 20040074336
    Abstract: 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, to
    Type: Application
    Filed: December 3, 2003
    Publication date: April 22, 2004
    Inventors: Hideo Daimon, Yukiko Kurobe, Naoki Toshima
  • Publication number: 20030034097
    Abstract: 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: Application
    Filed: March 4, 2002
    Publication date: February 20, 2003
    Inventor: Kazuo Ogasa
  • Publication number: 20020114725
    Abstract: 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: Application
    Filed: March 8, 2002
    Publication date: August 22, 2002
    Inventors: Melvin H. Miles, M. Ashraf Imam
  • Patent number: 6290501
    Abstract: 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: Grant
    Filed: December 2, 1999
    Date of Patent: September 18, 2001
    Assignee: Degussa-Huls Aktiengesellschaft
    Inventors: Franz Josef Grau, Joseph Maria Van Der Zel
  • Patent number: 6247565
    Abstract: 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: Grant
    Filed: December 16, 1999
    Date of Patent: June 19, 2001
    Assignee: Commissariat a l'Energie Atomique
    Inventors: François Saint-Antonin, Gérard Bourgeois
  • Patent number: 6096263
    Abstract: 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: Grant
    Filed: December 10, 1993
    Date of Patent: August 1, 2000
    Assignee: Lucent Technologies Inc.
    Inventors: Robert Joseph Cava, James Joseph Krajewski
  • Patent number: 6074603
    Abstract: 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: Grant
    Filed: July 12, 1999
    Date of Patent: June 13, 2000
    Assignee: Lucent Technologies Inc.
    Inventors: Robert Joseph Cava, James Joseph Krajewski
  • Patent number: 5849113
    Abstract: 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: Grant
    Filed: September 27, 1996
    Date of Patent: December 15, 1998
    Assignee: The Foundation: The Research Institute of Electric and Magnetic Alloys
    Inventors: Yuetsu Murakami, Katashi Masumoto, Naoji Nakamura
  • Patent number: 5682383
    Abstract: 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: Grant
    Filed: December 9, 1996
    Date of Patent: October 28, 1997
    Assignee: Standard Microsystems Corporation
    Inventors: Ashraf Mansur Dahod, Erick R. Diaz, Camillo Iadevaia, Ronald Sulyma, Colin Michael Taddonio
  • Patent number: 5637274
    Abstract: 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: Grant
    Filed: September 8, 1995
    Date of Patent: June 10, 1997
    Assignee: Nippon Steel Corporation
    Inventor: Osamu Kitamura
  • Patent number: 5538685
    Abstract: 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: Grant
    Filed: May 30, 1995
    Date of Patent: July 23, 1996
    Assignee: Tanaka Denshi Kogyo Kabushiki Kaisha
    Inventors: Katsuyuki Toyofuku, Ichiro Nagamatsu, Shinji Shirakawa, Hiroto Iga, Takeshi Kujiraoka, Kensei Murakami
  • Patent number: 5520753
    Abstract: 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: Grant
    Filed: December 30, 1994
    Date of Patent: May 28, 1996
    Assignee: The United States of America as represented by the Administrator of the National Aeronautics and Space Administration
    Inventor: Gary W. Hunter
  • Patent number: 5431875
    Abstract: 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: Grant
    Filed: May 2, 1994
    Date of Patent: July 11, 1995
    Assignee: The J. M. Ney Company
    Inventors: Thomas B. Cameron, Edward F. Smith, III
  • Patent number: 5424140
    Abstract: 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: Grant
    Filed: May 23, 1991
    Date of Patent: June 13, 1995
    Assignee: AlliedSignal Inc.
    Inventor: Anatol Rabinkin
  • Patent number: 5413755
    Abstract: 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: Grant
    Filed: October 26, 1993
    Date of Patent: May 9, 1995
    Assignee: AT&T Corp.
    Inventor: Robert J. Cava
  • Patent number: 5402305
    Abstract: 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: Grant
    Filed: November 29, 1993
    Date of Patent: March 28, 1995
    Assignee: Shoei Chemical Inc.
    Inventors: Eiichi Asada, Yuji Akimoto, Shinichi Ono, Kazurou Nagashima, Mineto Iwasaki, Masayuki Maekawa
  • Patent number: 5338509
    Abstract: 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: Grant
    Filed: September 9, 1993
    Date of Patent: August 16, 1994
    Assignee: Johnson Matthey Public Limited Company
    Inventors: Duncan R. Coupland, Mark L Doyle
  • Patent number: 5298218
    Abstract: 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: Grant
    Filed: September 4, 1992
    Date of Patent: March 29, 1994
    Assignee: Degussa Aktiengesellschaft
    Inventors: Werner Groll, Doris Hathaway, Bernd Kempf, Gernot Schock
  • Patent number: 5290371
    Abstract: 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: Grant
    Filed: October 28, 1992
    Date of Patent: March 1, 1994
    Assignee: The J. M. Ney Company
    Inventors: Thomas B. Cameron, Edward F. Smith, III
  • Patent number: 5244483
    Abstract: 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: Grant
    Filed: April 4, 1991
    Date of Patent: September 14, 1993
    Assignee: Manville Corporation
    Inventors: Eric J. Brosch, Randy A. Limmer, William M. Lafayette
  • Patent number: 5215710
    Abstract: 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: Grant
    Filed: March 25, 1992
    Date of Patent: June 1, 1993
    Assignee: Studiengesellschaft Kohle M.b.H.
    Inventors: Borislav Bogdanovic, Ursula Wilczok
  • Patent number: 5174954
    Abstract: 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: Grant
    Filed: March 1, 1991
    Date of Patent: December 29, 1992
    Assignee: Ivoclar N.A.
    Inventors: Stephen P. Schaffer, Patrick J. McCabe, Bernt-Roger Gustafsson
  • Patent number: 5139891
    Abstract: 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: Grant
    Filed: July 1, 1991
    Date of Patent: August 18, 1992
    Assignee: Olin Corporation
    Inventors: John G. Cowie, Jacob Crane, Julius C. Fister
  • Patent number: 5133929
    Abstract: 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: Grant
    Filed: July 2, 1990
    Date of Patent: July 28, 1992
    Assignee: Studiengesellschaft Kohle mbH
    Inventors: Borislav Bogdanovic, Ursula Wilczok
  • Patent number: 5075076
    Abstract: 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: Grant
    Filed: January 8, 1990
    Date of Patent: December 24, 1991
    Assignee: Comptoir Lyon-Alemand-Louyot, Societe Anonyme
    Inventors: Jean-Paul Guerlet, Jean-Pierre Hilger
  • Patent number: 5051235
    Abstract: 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: Grant
    Filed: January 8, 1990
    Date of Patent: September 24, 1991
    Assignee: Comptoir Lyon-Alemand-Louyot, Societe Anonyme
    Inventors: Jean-Paul Guerlet, Dan Weber
  • Patent number: 5019337
    Abstract: 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: Grant
    Filed: February 16, 1990
    Date of Patent: May 28, 1991
    Assignee: American Dental Association Health Foundation
    Inventor: Richard M. Waterstrat
  • Patent number: 5011311
    Abstract: 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: Grant
    Filed: August 29, 1989
    Date of Patent: April 30, 1991
    Inventors: Brian C. Harris, Raymond Cook
  • Patent number: 5005986
    Abstract: 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: Grant
    Filed: June 19, 1989
    Date of Patent: April 9, 1991
    Assignee: Texaco Inc.
    Inventors: Mitri S. Najjar, Arnulf Muan