Silver Containing Patents (Class 420/403)
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Publication number: 20140248288Abstract: The invention relates to biodegradable, metal alloy-containing compositions, methods for their preparation and applications for their use. The compositions include magnesium and other components, such as yttrium, calcium, silver, cerium, and zirconium; or zinc, silver, cerium, and zirconium; or aluminum, zinc, calcium, manganese, silver, yttrium; or strontium, calcium, zinc. The compositions are prepared by vacuum induction/crucible melting together the components and casting the melted mixture in a preheated mild steel/copper mold. In certain embodiments, the compositions of the invention are particularly useful for forming medical devices for implantation into a body of a patient.Type: ApplicationFiled: October 5, 2012Publication date: September 4, 2014Applicant: UNIVERSITY OF PITTSBURGH-OF THE COMMONWEALTH SYSTEM OF HIGHER EDUCATIONInventors: Prashant N. Kumta, Da-Tren Chou, Daeho Hong, Partha Saha
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Publication number: 20130144290Abstract: The invention relates to a magnesium alloy containing (in % by weight) more than 0.0 to 7.0% zinc, optionally more than 0.0 to 1.0% zirconium, optionally more than 0.0 to 1.0% calcium, optionally more than 0.0 to 1.0% manganese, optionally more than 0.0 to 0.5% silicon, optionally more than 0.0 to 1.0% silver, a max. up to 0.5% aluminum and at least one element selected from the group comprising more than 0.05 to 0.6% yttrium, more than 0.05 to 4.0% ytterbium, more than 0.05 to 4.0% gadolinium, with the residue being magnesium and impurities due to production. The invention also relates to a use of a magnesium alloy of this type and an implant therefrom and a method for producing a body of a magnesium alloy according to the invention.Type: ApplicationFiled: June 15, 2011Publication date: June 6, 2013Applicant: AIT AUSTRIAN INSTITUTE OF TECHNOLOGY GMBHInventors: Andreas Schiffl, Bernhard Mingler
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Publication number: 20130089457Abstract: Provided is a composite material suitable for forming a part for continuous casting capable of producing cast materials of excellent surface quality for a long period of time and with which a molten metal is inhibited from flowing into a gap between a nozzle and a moving mold. A composite material (nozzle 1) includes a porous body 2 having a large number of pores and a filler incorporated in at least part of a portion that comes into contact with the molten metal, the portion being part of a surface portion of the porous body. The filler incorporated in the porous body 2 is at least one selected from a nitride, a carbide, and carbon.Type: ApplicationFiled: June 3, 2011Publication date: April 11, 2013Applicant: Sumitomo Electric Industries LtdInventors: Michimasa Miyanaga, Takeshi Uchihara, Masatada Numano, Yukihiro Oishi, Nozomu Kawabe
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Publication number: 20120269673Abstract: The present invention relates to a magnesium alloy having controlled corrosion resistance properties, which comprises magnesium (Mg) and an alloying element and includes a magnesium phase and a phase composed of magnesium and the alloying element, wherein the difference in electrical potential between the magnesium phase and the phase composed of magnesium and the alloying element is greater than 0 V but not greater than 0.2 V.Type: ApplicationFiled: December 7, 2010Publication date: October 25, 2012Inventors: Ja-Kyo Koo, Hyun-Kwang Seok, Seok-Jo Yang, Yu-Chan Kim, Sung-Youn Cho, Jong-Tack Kim
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Patent number: 8293031Abstract: A magnesium alloy, comprising: Y: 0.5-10? Zn: 0.5-6?? Ca: 0.05-1?? Mn: ??0-0.5 Ag: 0-1 Ce: 0-1 Zr: 0-1 or Si: 0-0.4, wherein the amounts are based on weight-percent of the alloy and Mg, and manufacturing-related impurities constitute the remainder of the alloy to a total of 100 weight-percent. Also disclosed is a method for manufacturing such an alloy and a biodegradable implant formed therefrom.Type: GrantFiled: July 27, 2007Date of Patent: October 23, 2012Assignee: Biotronik VI Patent AGInventors: Bodo Gerold, Heinz Mueller, Joerg Loeffler, Anja Haenzi, Peter Uggowitzer
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Patent number: 8089029Abstract: A method and apparatus is provided for processing a medical device formed from a bioabsorbable metallic material. The method begins by generating a beam of radiation onto the bioabsorbable metallic material. The radiation beam is transmitted through a fluid medium and onto a heat affected zone (HAZ) of the bioabsorbable metallic material to thereby cool the HAZ and reduce a concentration of oxygen surrounding the HAZ.Type: GrantFiled: February 1, 2006Date of Patent: January 3, 2012Assignee: Boston Scientific SciMed, Inc.Inventor: Aiden Flanagan
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Publication number: 20100202916Abstract: An Mg base alloy of this invention is characterized in that Ag is contained in an amount of not more than 1.98 at % as an additive material other than Zn. There is provided an Mg base alloy having not only a practically sufficient strength but good ductility at room temperature to an extent that it has hitherto been unable to be desired and having small anisotropy in strength characteristics.Type: ApplicationFiled: May 9, 2008Publication date: August 12, 2010Inventors: Chamini Mendis, Keiichiro Oishi, Kazuhiro Houno, Yoshiaki Kawamura, Shigeharu Kamado
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Publication number: 20100119405Abstract: A magnesium alloy for casting according to the present invention is characterized in that, when the entirety is taken as 100% by mass, it includes copper (Cu) in an amount of from 1% by mass or more to 5% by mass or less, calcium (Ca) in an amount of from 0.1% by mass or more to 5% by mass or less, silver (Ag) in an amount of from 0.1% by mass or more to 5% by mass or less, and the balance comprising magnesium (Mg) and inevitable impurities. By means of including Cu and Ca, crystallized substances of Mg—Ca compounds crystallize in crystalline grain boundaries between Mg crystalline grains as three-dimensionally mesh shapes, along with Mg—Cu compounds. By means of the three-dimensionally mesh constructions, grain-boundary sliding, which becomes active especially when becoming high temperature, is suppressed, and thereby high-temperature strength and creep resistance at high temperature improve.Type: ApplicationFiled: April 14, 2008Publication date: May 13, 2010Applicant: KABUSHIKI KAISHA TOYOTA JIDOSHOKKIInventors: Yuki Okamoto, Kyoichi Kinoshita, Motoharu Tanizawa, Kazuhiko Yoshida
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Patent number: 7617964Abstract: A low temperature solder including indium in the range of 62-65 weight percent and tin in the range of 31-33 weight percent uses the heat generated during thermal treatment of one or more glass sheets to melt the solder. In one non-limiting embodiment, a lead providing external access to an electrical conductive arrangement, e.g. a conductive member between and connected to spaced bus bars between laminated sheets has an end portion of a connector, e.g. a lead soldered to each of the bus bars during thermal processing of the sheets, e.g. during the lamination of the sheets during a windshield manufacturing process. In another nonlimiting embodiment, the connector is soldered to the electrically conductive arrangement during the annealing of glass blanks following the heating and shaping of the glass blanks.Type: GrantFiled: December 14, 2006Date of Patent: November 17, 2009Assignee: PPG Industries Ohio, Inc.Inventors: John A. Winter, Charles S. Voeltzel, Cheryl E. Belli, James P. Thiel
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Publication number: 20090116992Abstract: A method for making Mg(magnesium)-based intermetallic compound uses a thermal process during a melting process to produce largely the Mg-based intermetallic compound. The vapor pressure of Mg is high, thereby Mg is prone to be vaporized from a melt and a wrought solid alloy in the melting process of high temperature, for purifying the wrought Mg-based intermetallic compound. The method may simplify the process and devices for making the Mg-based intermetallic compound, and produce efficiently a larger of high purity Mg-based intermetallic compound.Type: ApplicationFiled: December 10, 2007Publication date: May 7, 2009Inventors: Sheng-Long Lee, Jing-Chie Lin, Che-Wei Hsu, Cheng-Yu Chou, Yin-Chun Cheng, Chia-Wang Weng, Chien-Chang Chiang, Chien-Wei Chen
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Publication number: 20090035171Abstract: Provided is a high-strength and high-toughness magnesium alloy which has practical level of both the strength and the toughness for expanded applications of the magnesium alloys, and is a method for manufacturing thereof. The high-strength and high-toughness magnesium alloy of the present invention contains: a atom % in total of at least one metal of Cu, Ni, and Co; and b atom % in total of at least one element selected from the group consisting of Y, Dy, Er, Ho, Gd, Tb, and Tm, while a and b satisfying the following formulae (1) to (3), 0.2?a?10??(1) 0.2?b?10??(2) 2/3a?2/3<b.Type: ApplicationFiled: March 20, 2007Publication date: February 5, 2009Inventors: Yoshihito Kawamura, Michiaki Yamasaki, Takaomi Itoi, Mitsuji Hirohashi
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Publication number: 20080311423Abstract: The invention is to provide a magnesium alloy material such as a magnesium alloy cast material or a magnesium alloy rolled material, excellent in mechanical characteristics and surface precision, a producing method capable of stably producing such material, a magnesium alloy formed article utilizing the rolled material, and a producing method therefor. The invention provides a producing method for a magnesium alloy material, including a melting step of melting a magnesium alloy in a melting furnace to obtain a molten metal, a transfer step of transferring the molten metal from the melting furnace to a molten metal reservoir, and a casting step of supplying a movable mold with the molten metal from the molten metal reservoir, through a pouring gate, and solidifying the molten metal to continuously produce a cast material. In a process from the melting step to the casting step, parts contacted by the molten metal are formed by a low-oxygen material having an oxygen content of 20 mass % or less.Type: ApplicationFiled: June 28, 2005Publication date: December 18, 2008Inventors: Masatada Numano, Yoshihiro Nakai, Toshiya Ikeda, Taichiro Nishikawa
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Publication number: 20080033530Abstract: A marker alloy foreign implant made of a biodegradable metallic material and having the composition MgxYbyMz wherein x is equal to 10-60 atomic percent; y is equal to 40-90 atomic percent; z is equal to 0-10 atomic percent; M is one or more element selected from the group consisting of Ag, Zn, Au, Ga, Pd, Pt, Al, Sn, Ca, Nd, Ba, Si, and Ge; and wherein x, y, and z, together, and including contaminants caused by production, result in 100 atomic percent.Type: ApplicationFiled: August 7, 2007Publication date: February 7, 2008Applicant: BIOTRONIK VI PATENT AGInventors: Bruno Zberg, Joerg Loeffler, Bodo Gerold
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Publication number: 20040208776Abstract: This invention takes advantage of the characteristics that the effective charge numbers of different metals have different values and even with different signs, and alloys are prepared with the metals of different signs of effective charge numbers. The effective charge numbers of the alloys are the summation of the mole fraction of each constituent metal times its respective effective charge number. Based on the knowledge of the calculated effective charge number, alloys are prepared with proper selection of constituent metals and proper ratios. When the alloy is under the influence of an electric field, the atoms, with the tendency to move in the same direction of the electron flow, interact with the atoms, with the tendency to move in the opposite. The alloys are thus electromigration effect-free or electromigration effect-insignificant.Type: ApplicationFiled: September 9, 2003Publication date: October 21, 2004Applicant: National Tsing Hua UniversityInventor: Sinn-Wen Chen
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Patent number: 5353981Abstract: A low pressure process of producing graphite fiber metal matrix composite (Gr/MMC) structures comprising brazing graphite-magnesium metal matrix composite precursors or tapes using a soldering alloy consisting essentially of magnesium and one or more of aluminum, zinc, lithium and silver.Type: GrantFiled: December 1, 1992Date of Patent: October 11, 1994Assignee: TRW Inc.Inventors: Donald B. Evans, Rex C. Claridge
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Patent number: 5348591Abstract: An amorphous magnesium alloy has a composition of Mg.sub.a M.sub.b X.sub.c (M is Zn and/or Ga, X is La, Ce, Mm (misch metal), Y, Nd, Pr, Sm and Gd), a is from 65 to 96.5 atomic %, b is from 3 to 30 atomic %, and c is from 0.2 to 8 atomic %). The magnesium alloy has a high specific strength and does not embrittle at room temperature.Type: GrantFiled: September 2, 1992Date of Patent: September 20, 1994Assignees: Tsuyoshi Masumoto, Toyota Jidosha Kabushiki Kaisha, Yoshida Kogyo K.K., Teikoku Piston Ring Co., Ltd.Inventors: Tsuyoshi Masumoto, Akihisa Inoue, Akira Kato, Toshisuke Shibata, Nobuyuki Nishiyama
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Patent number: 4765954Abstract: A rapidly solidified magnesium based alloy contains finely dispersed magnesium intermetallic phases. The alloy has the form of a filament or a powder and is especially suited for consolidation into bulk shapes having superior combination of strength, ductility and corrosion resistance.Type: GrantFiled: September 30, 1985Date of Patent: August 23, 1988Assignee: Allied CorporationInventors: Santosh K. Das, Chin-Fong Chang
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Patent number: 4522331Abstract: A copper based low melting point microcrystalline metal alloy composition consists essentially of about 0.1 to 28 weight percent tin, the balance being copper and incidental impurities.Type: GrantFiled: June 3, 1983Date of Patent: June 11, 1985Assignee: Allied CorporationInventors: Howard H. Liebermann, Claude D. Tahlmore
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Patent number: 4401621Abstract: Magnesium alloys for castings having good tensile properties at both ambient and high temperatures and good resistance to creep contain 1.5-10% of yttrium or an yttrium/heavy rare earths mixture and 1-6% of neodymium or a neodymium/lanthanum/praseodymium mixture. The alloys may be heat treated to improve their properties.Type: GrantFiled: March 25, 1982Date of Patent: August 30, 1983Assignee: Magnesium Elektron LimitedInventors: William Unsworth, John F. King, Stephen L. Bradshaw