Patents Examined by Daniel Jenkins
  • Patent number: 7241348
    Abstract: A flux for solder paste contains a dicarboxylic acid of carbon number 3 to 5 and a dicarboxylic acid of carbon number 15 to 20 as an activator, which prevents skinning or changes by aging of viscosity. In actual use, the solder paste of the present invention can maintain good coating and printing ability for long time, further can endure preheating under high temperatures.
    Type: Grant
    Filed: January 22, 2003
    Date of Patent: July 10, 2007
    Assignee: Tokyo First Trading Co., Ltd.
    Inventors: Kenichi Wada, Shoichi Nakaji
  • Patent number: 7232611
    Abstract: The present invention relates to a component (1) comprising an element (2), which contains zirconium or a zirconium alloy and which has a surface (3) on which a corrosion protective layer (4) is formed, the oxide layer (4) comprising zirconium oxide. The component (1) is intended to be in an oxidising environment (6) and said oxide layer (4) has an outer surface (5) towards said oxidising environment (6). The element (2) comprises a layer (10), that borders said surface (3) and comprises hydrogen and at least one metal from the group of lanthanum elements and/or from the group platinum metals and/or yttrium which in its elemental form or as an oxide have the ability to effectively dissociate oxygen and H2O. The invention also relates to a method for manufacturing the component (1) and a nuclear facility comprising the component (1).
    Type: Grant
    Filed: March 20, 2001
    Date of Patent: June 19, 2007
    Assignee: Westinghouse Electric Sweden AB
    Inventors: Gunnar Hultquist, Magnus Limbäck, Gunnar Wikmark
  • Patent number: 7189277
    Abstract: Molding compositions and forming processes for normally rust-prone iron-based powders, and articles produced therefrom. Metal alloy systems that can be successfully formed using the processes of the invention, include elemental iron and iron alloys including low and medium alloy steels, tool steels and a number of specialty iron-base alloys.
    Type: Grant
    Filed: August 20, 2004
    Date of Patent: March 13, 2007
    Inventor: Robert Craig Morris
  • Patent number: 7189276
    Abstract: A foamed/porous metal having fine bubbles in a matrix of aluminum or magnesium has shells of aluminum oxide or magnesium oxide formed between the matrix and the bubbles of carbon dioxide.
    Type: Grant
    Filed: February 3, 2003
    Date of Patent: March 13, 2007
    Assignee: Honda Giken Kogyo Kabushiki Kaisha
    Inventors: Takashi Nakamura, Ryoichi Ishikawa, Katsuhiro Shibata
  • Patent number: 7175404
    Abstract: The present invention is an apparatus for filling a multi-powder including a powder box (10) including a plurality of powder chambers storing a plurality of powders whose constituent compositions differ in a divided manner, and a gas feed pipe (14) disposed on the bottom side of the powder chamber and having an introducing hole for introducing a gas, wherein it can fill a plurality of the powders into a cavity (24) at once through the bottom openings of the powder box by introducing a gas through the introducing hole to substantially equalize the respective flow resistances of a plurality of the powders. Thus, it is possible to fill the powders whose constituent compositions differ at once without disposing them in a mixed manner.
    Type: Grant
    Filed: March 27, 2002
    Date of Patent: February 13, 2007
    Assignees: Kabushiki Kaisha Toyota Chuo Kenkyusho, Toyota Jidosha Kabushiki Kaisha
    Inventors: Mikio Kondo, Hiroshi Okajima, Yoshitaka Takahashi
  • Patent number: 7160351
    Abstract: A method of fabricating clutch races for one-way clutch mechanisms includes compacting and sintering a ferrous-based powder metal to near-net shape to produce a core density of between about 6.8 to 7.6 g/cc and a race surface that is near-net shape. The cam surface is cold worked in a manner that locally increases the density at the surface to develop a highly densified layer of essentially fully densified material and with a final surface finish that, after heat treatment, is ready to use in a one-way clutch application without further working. Both the inner and outer clutch races of one-way clutch mechanisms can be formed in this fashion and yield races that exhibit excellent strength, toughness, fatigue strength and wear resistance.
    Type: Grant
    Filed: October 1, 2002
    Date of Patent: January 9, 2007
    Assignee: PMG Ohio Corp.
    Inventors: Juan R. L. Trasorras, Salvator Nigarura
  • Patent number: 7150851
    Abstract: An apparatus for pressing a mass into a coherent workpiece has a mold body defining a chamber and a mold liner in the chamber having a generally cylindrical pressing surface centered on an axis, directed in one radial direction, and defining a mold cavity and an opposite surface directed in an opposite radial direction. A plunger is engageable axially in the cavity. The cavity holds the mass in engagement with the pressing surface and with the plunger. The plunger can be pressed axially against the mass and thereby compress the mass in the cavity. A force, typically effected hydraulically, is exerted against the liner in the one radial direction between the mold body and the opposite surface of the liner to thereby elastically deform the liner in the one radial direction toward the mass and radially compress the liner and mass in the cavity.
    Type: Grant
    Filed: May 31, 2005
    Date of Patent: December 19, 2006
    Assignee: SMS Meer GmbH
    Inventors: Matthias Holthausen, Martin Zingsem, Guido Schrömges, Rolf Vest
  • Patent number: 7147819
    Abstract: The invention relates to a method for producing highly porous, metallic molded bodies. The inventive method consists of the following steps: a metallic powder used as a starting material is mixed with a dummy; a green body is pressed out of the mixture; the green body is subjected to conventional mechanical machining, the dummy advantageously increasing the stability of the green body; the dummy material is thermally separated from the green body by means of air, a vacuum or an inert gas; and the green body is sintered to form the molded body and is then advantageously finished. Suitable materials for the dummy are, for example, ammonium bicarbonate or carbamide. The mechanical machining carried out before the sintering advantageously enables a simple production close to the desired final contours, even for complicated geometries of the molded body to be produced, without impairing the porosity, and without high wear of the tools.
    Type: Grant
    Filed: May 9, 2003
    Date of Patent: December 12, 2006
    Assignee: Forschungszentrum Julich GmbH
    Inventors: Martin Bram, Alexander Laptev, Detlev Stöver, Hans Peter Buchkremer
  • Patent number: 7147820
    Abstract: A method for minimizing the spread of the maximum compression forces in compacting powder, specifically metallic powder, by means of a powder press which has a die-plate, an upper ram, and at least one lower ram which are associated with a die-bore and are respectively operable by a hydraulic press cylinder, and a charging shoe movable on the die-plate along a predetermined path for filling the die-bore with the powder, wherein the maximum compression force of at least the upper ram is measured upon arrival at a predetermined position, the charging shoe, the die-plate, the upper ram and/or lower ram are vibrated at a predetermined frequency and amplitude during the filling operation and/or at the beginning of the compression procedure and, in addition, the filling time or the course of charging shoe motion in time are predetermined, wherein the frequency distribution of the maximum compression force values is determined at intervals and the standard deviation is determined therefrom for the maximum compressio
    Type: Grant
    Filed: August 22, 2002
    Date of Patent: December 12, 2006
    Assignee: Fette GmbH
    Inventors: Jurgen Hinzpeter, Ulrich Zeuschner, Ingo Schmidt, Thomas Pannewitz, Udo Baltruschat, Thorsten Ehrich, Ulf Hauschild
  • Patent number: 7144548
    Abstract: Gravitational sag and shape distortion by friction over supporting hardware during binder removal and sintering of green bodies made from sinterable particulate materials are overcome by processing in a supercritical fluid medium at a pressure whereby the density of the medium approaches or equals that of the green bodies.
    Type: Grant
    Filed: November 17, 2003
    Date of Patent: December 5, 2006
    Inventors: Romain Louis Billiet, Hanh Thi Nguyen
  • Patent number: 7144546
    Abstract: Nitrided valve metals are described, such as nitrided tantalum and nitrided niobium. The nitrided valve metals preferably have improved flow properties, higher Scott Densities, and/or improved pore size distribution which leads to improved physical properties of the valve metal and improved electrical properties once the valve metal is formed into a capacitor anode. Processes for preparing a nitrided valve metal are further described and involve nitriding the valve metal at a sufficient temperature and pressure during a heat treatment that is prior to the deoxidation step. Capacitor anodes and other products incorporating the valve metals of the present invention are further described.
    Type: Grant
    Filed: November 25, 2003
    Date of Patent: December 5, 2006
    Assignee: Cabot Corporation
    Inventors: Shi Yuan, legal representative, Bhamidipaty K. D. P. Rao, deceased
  • Patent number: 7141207
    Abstract: A 3D Printing Rapid Prototyping process using Al/Mg particles coated with a metal (i.e. copper, nickel, zinc, or tin) that (1) prevents oxidation of the Al/Mg particles, and (2) either alone, or when alloyed with the aluminum or magnesium core metal, melts below the liquidus temperature of the core.
    Type: Grant
    Filed: August 30, 2004
    Date of Patent: November 28, 2006
    Assignee: General Motors Corporation
    Inventors: William F. Jandeska, Jr., James E. Hetzner
  • Patent number: 7141209
    Abstract: There is provided a method for producing oxide dispersion strengthened ferritic steel tube by fabricating a raw tube by mixed sintering of a metal powder and an oxide powder and producing a tube of the desired shape by repeating cold rolling and heat treatment for a total of three times or more. The method comprises performing each of the intermediate heat treatments during the cold rolling by a two-step heat treatment consisting of a first step heat treatment of 1100° C. or lower and a second step heat treatment of 1100 to 1250° C. and higher than the first step temperature, and performing the final heat treatment at 1100° C. or higher.
    Type: Grant
    Filed: September 25, 2003
    Date of Patent: November 28, 2006
    Assignee: Japan Nuclear Cycle Development Institute
    Inventors: Takeji Kaito, Shigeharu Ukai, Satoshi Ohtsuka, Toshimi Kobayashi
  • Patent number: 7135141
    Abstract: A method of manufacturing a sintered body, in which a material powder composed of metallic powder or alloy powder, a getter material having a higher oxidation potential than that of the material powder, and a hydride, which constitutes a hydrogen source, are sealed under reduced pressure in a metallic container, and subjected to pressurized sintering while being heated. The pressurized sintering is performed by keeping the metallic container at pressure not higher than 50 MPa and at temperature not lower than 500° C. for 1 to 50 hours, and then sintering the metallic powder and the alloy powder at pressure higher than 50 MPa and at temperature not higher than 1340° C.
    Type: Grant
    Filed: March 29, 2004
    Date of Patent: November 14, 2006
    Assignee: Hitachi Metals, Ltd.
    Inventors: Gang Han, Tomonori Ueno, Eiji Hirakawa, Shujiro Uesaka
  • Patent number: 7108828
    Abstract: The porous material of the present invention is produced by heating a dry powder mixture, containing mainly an organic solid binder and inorganic particles. The mixture is foamed while the organic binder is melted. Foaming comes from a foaming agent in the powder mixture. The solid foamed structure comprising inorganic particles embedded in an organic binder is then heated to eliminate the organic binder and finally to sinter the remaining inorganic tri-dimensional network into a rigid structure having interconnected porosity.
    Type: Grant
    Filed: June 23, 2003
    Date of Patent: September 19, 2006
    Assignee: National Research Council of Canada
    Inventors: Louis-Philippe Lefebvre, Yannig Thomas, Maxime Gauthier
  • Patent number: 7105127
    Abstract: A method for the production of foamable or foamed metal pellets, parts and panels. The method comprises the steps of: i) providing a mixture of a metal alloy powder with a foaming agent powder, ii) pre-compacting the mixture of step i); iii) heating the pre-compacted mixture of step ii) to a temperature below a decomposition temperature of the foaming and at which permanent bonding of the particles occurs v) hot compacting the body for producing a compacted body made of a metal matrix embedding the foaming agent; and vi) reducing the compacted body into metal fragments and thereby obtaining dense foamable metal chips. A method for the production of a foam metal using a closed volume metal shell is also disclosed.
    Type: Grant
    Filed: July 15, 2003
    Date of Patent: September 12, 2006
    Assignee: AGS Taron Technologies Inc.
    Inventor: Serguei Vatchiants
  • Patent number: 7105201
    Abstract: Methodology for constructing composite particles from ingredients comprising two or more particulate components. The resultant particles are usefully incorporated into powder coating compositions. The approach also finds utility in other applications, including but not limited to the food, drug, and cosmetics industry. Fluidized particles are subjected to an intense, but relatively brief heating event. This causes associated particles to fusingly assemble into fused composite clusters.
    Type: Grant
    Filed: July 26, 2002
    Date of Patent: September 12, 2006
    Assignee: H.B. Fuller Licensing & Financing, Inc.
    Inventors: Walter J. Blatter, James A. Heck, Lowell G. Lindquist
  • Patent number: 7097807
    Abstract: Objects comprising Al-7.5 Mg particulate having pressure consolidated nanocrystalline coating material are formed. Oxides of the coating material, in particulate form, may become dispersed in the pressure consolidated, thereby increasing its strength.
    Type: Grant
    Filed: April 3, 2003
    Date of Patent: August 29, 2006
    Assignee: Ceracon, Inc.
    Inventors: Henry S. Meeks, III, Marc S. Fleming
  • Patent number: 7067197
    Abstract: A method of forming a sputtering target and other metal articles having controlled oxygen and nitrogen content levels and the articles so formed are described. The method includes surface-nitriding a deoxidized metal powder and further includes consolidating the powder by a powder metallurgy technique. Preferred metal powders include, but are not limited to, valve metals, including tantalum, niobium, and alloys thereof.
    Type: Grant
    Filed: January 6, 2004
    Date of Patent: June 27, 2006
    Assignee: Cabot Corporation
    Inventors: Christopher A. Michaluk, Shi Yuan, James Maguire
  • Patent number: 7063815
    Abstract: Metal-metal or metal-ceramic/carbide composite materials are fabricated by combination of powder injection molding and infiltration. This is achieved by first forming a composite system having a matrix component and an infiltrant layer. The matrix component is formed from a metal or ceramic/carbide powder, that is of a higher melting point, admixed with a first binder. The infiltrant layer is formed from a metal powder, that is of a lower melting point, admixed with a second binder. The first and second binders are subsequently removed from the composite system during a debinding process. The composite system is then heated in a sintering furnace to coalesce the matrix component into a matrix phase having a network of interconnected pores, and to effect infiltration of the infiltrant layer into these pores to form the composite material of the present invention.
    Type: Grant
    Filed: December 5, 2003
    Date of Patent: June 20, 2006
    Assignee: Agency for Science, Technology and Research
    Inventors: Qingfa Li, Su Xia Zhang, Meng Kwong Ho