Patents Examined by Jason Savage
  • Abradable quasicrystalline coating
    Patent number: 6254700
    Abstract: A thermally sprayed coating formed with a quasicrystal-containing alloy, the alloy consisting essentially of, by weight percent, 10 to 45 Cu, about 7 to 22 Fe, 0 to 30 Cr, 0 to 30 Co, 0 to 20 Ni, 0 to 10 Mo, 0 to 7.5 W and balance aluminum with incidental impurities. The alloy contains less than 30 weight percent &psgr; phase and at least 65 weight percent &dgr; phase. The coating has a macrohardness of less than HR15Y 90.
    Type: Grant
    Filed: March 16, 1999
    Date of Patent: July 3, 2001
    Assignee: Praxair S.T. Technology, Inc.
    Inventor: Frank J. Hermanek
  • Si-SiC material and SiC fiber-reinforced Si-SiC composite material
    Patent number: 6254974
    Abstract: A Si—SiC material of Si concentration-gradient type is obtained by melt-infiltrating Si into a molded material comprising SiC particles. The Si—SiC material has a porosity of 1.0% or less and in the Si—SiC material the Si concentration decreases gradually from the surface layer towards the innermost layer. A SiC fiber-reinforced Si—SiC composite material of Si concentration-gradient type is obtained by melt-infiltrating Si into a molded material comprising a SiC fiber and SiC particles. The composite material has a porosity of 1.0% or less and in the composite material the Si concentration decreases gradually from the surface layer towards the innermost layer. These materials are significantly improved in corrosion resistance in highly oxidative and corrosive environment, strength, and healability of defects of surface layer and innermost layer.
    Type: Grant
    Filed: July 13, 1998
    Date of Patent: July 3, 2001
    Assignee: NGK Insulators, Ltd.
    Inventors: Shigeru Hanzawa, Masatoshi Futakawa, Saburo Shimizu, Kaoru Onuki, Ikuo Ioka, Ynte Johan Stockmann
  • Wear-resistant quasicrystalline coating
    Patent number: 6254699
    Abstract: A thermally sprayed coating formed with a quasicrystal-containing alloy, the alloy consisting essentially of, by weight percent, 10 to 45 Cu, 7 to 22 Fe, 0 to 30 Cr, 0 to 30 Co, 0 to 20 Ni, 0 to 10 Mo, 0 to 7.5 W and balance aluminum with incidental impurities. The alloy contains at least 50 weight percent &psgr; phase. The coating has a macro hardness of at least HR15N 75.
    Type: Grant
    Filed: March 16, 1999
    Date of Patent: July 3, 2001
    Assignee: Praxair S.T. Technology, Inc.
    Inventor: Frank J. Hermanek
  • High molecular weight thermoplastic polyester resin foam
    Patent number: 6254977
    Abstract: A thermoplastic polyester resin is fed into a twin extruder, wherein a resin is heated for melting, thereby removing moisture in the resin by evacuating and sucking from a vent port thereof, injecting a foaming agent into the resin to which is pushed out as a foaming sheet and, after that, forming the foaming sheet which is divided into a forming body and a trimming loss, whereby the trimming loss is crushed to obtain crushed materials which are provided so as to put the materials into the twin extruder as collection materials and recycle them.
    Type: Grant
    Filed: October 5, 1998
    Date of Patent: July 3, 2001
    Assignee: Sekisui Kaseihin Kogyo Kabushiki Kaisha
    Inventors: Susumu Ishiwatari, Masahiro Tsubone, Takaaki Hirai, Masahiro Shindo, Kiyoshi Yoshioka, Nobuyuki Tsujiwaki
  • Article with metallic surface layer for heat transfer augmentation and method for making
    Patent number: 6254997
    Abstract: An article comprising a substrate and an outer metallic layer, such as a coating, is provided with augmented heat transfer from the substrate through the combination of a layer thickness of about 0.003″ to about 0.017″, a layer surface roughness of at least about 500 micro inches Ra, a layer tensile bond strength of at least about 5 ksi, and a heat transfer augmentation of at least about 1.1. A method of making the article uses an electric arc wire thermal spray process in which the atomizing gas pressure is maintained within the range of about 20-80 psi.
    Type: Grant
    Filed: December 16, 1998
    Date of Patent: July 3, 2001
    Assignee: General Electric Company
    Inventors: Mark G. Rettig, Gilbert Farmer, Thomas J. Tomlinson, Robert G. Zimmerman, Jr., Bhupendra K. Gupta
  • Coated cast part
    Patent number: 6251526
    Abstract: The cast part (1) comprises a basic body (2) of a first material and a coating of at least one second material. The second material is applied to a co-cast skeleton structure (3) on the surface (20) of the basic body, with it forming a covering (4) or a covering layer (42).
    Type: Grant
    Filed: February 2, 1999
    Date of Patent: June 26, 2001
    Assignee: Sulzer Innotec AG
    Inventor: Fritz Staub
  • Soldered integrated circuit connections
    Patent number: 6248452
    Abstract: Solder paste is deposited using a solder stencil with an aperture having a concave edge in order to reduce the formation of solder balls. The solder deposit may be formed on a pad such that the paste has a concave edge. Solder paste deposits may be made on adjacent pads with the concave surfaces facing one another.
    Type: Grant
    Filed: April 17, 2000
    Date of Patent: June 19, 2001
    Assignee: Micron Technology, Inc.
    Inventors: Richard Regner, Scott Butler, Carey Blue
  • Micromachined element and method of fabrication thereof
    Patent number: 6245444
    Abstract: A micromachined element mounted to a substrate, the element including a cantilever having a proximal portion attached to the substrate and a coilable distal portion terminating in a free distal end. The coilable distal portion, upon being heated, is capable of bending away from the substrate and at least partially coiling upon itself to form a coiled portion. At least part of the micromachined element may be electrically conductive. In various embodiments, the micromachined element may function as a mechanical microspring, an electrically conductive link, and/or a magnetic coil. A method of fabricating the microelement may include the steps of selectively depositing various layers upon the substrate.
    Type: Grant
    Filed: October 2, 1997
    Date of Patent: June 12, 2001
    Assignee: New Jersey Institute of Technology
    Inventors: Robert B. Marcus, Yanwei Zhang
  • Metal matrix composite casting and manufacturing method thereof
    Patent number: 6245442
    Abstract: A metal matrix composite casting comprises a metal matrix composite and a processed member inserted in the metal matrix composite by enveloped casting. By the processed member which is easier to process than the metal matrix composite, a processed portion of a predetermined shape can be formed in the metal matrix composite. That is, by a simple processing such that the processed member is removed from the metal matrix composite or the processed portion is formed in the processed member itself, the processed portion having a desired shape can be easily formed in the metal matrix composite.
    Type: Grant
    Filed: May 27, 1998
    Date of Patent: June 12, 2001
    Assignee: Kabushiki Kaisha Toyota Chuo
    Inventors: Shinichi Towata, Nobuo Kamiya, Hiroshi Hohjo, Naohisa Nishino, Tsuyoshi Yamamoto, Shoichi Onda
  • Iron aluminide coating and method of applying an iron aluminide coating
    Patent number: 6245447
    Abstract: An iron aluminide coating as a bonding layer between a thermally stressed element of a thermal turbomachine and a heat insulation coat consists essentially of:  5-35 % by weight aluminum 15-25 % by weight chromium 0.5-10  % by weight molybdenum, tungsten, tantalum and/or niobium   0-0.3 % by weight zirconium 0-1 % by weight boron 0-1 % by weight yttrium the remainder being iron and incidental impurities arising from production thereof.
    Type: Grant
    Filed: December 1, 1998
    Date of Patent: June 12, 2001
    Assignee: Asea Brown Boveri AG
    Inventors: Mohamed Nazmy, Markus Staubli
  • Rough electrical contact surface
    Patent number: 6245445
    Abstract: A method for rendering a surface of a contact rough includes submerging the surface of the contact in an electroplating bath having a dissolved metal salt, and pulsing an electric current through the contact and the bath to form a rough metallic structure on the surface of the contact.
    Type: Grant
    Filed: March 2, 1999
    Date of Patent: June 12, 2001
    Assignee: Kulicke & Soffa Industries, Inc.
    Inventor: James L. Lykins, II
  • Corrosion-resistant terminal metal pads for thin film packages
    Patent number: 6235412
    Abstract: A process for producing a terminal metal pad structure electrically interconnecting a package and other components. More particularly, the invention encompasses a process for producing a plurality of corrosion-resistant terminal metal pads. Each pad includes a base pad containing copper which is encapsulated within a series of successively electroplated metal encapsulating films to produce a corrosion-resistant terminal metal pad.
    Type: Grant
    Filed: April 6, 2000
    Date of Patent: May 22, 2001
    Assignee: International Business Machines Corporation
    Inventors: Tien-Jen Cheng, Ajay P. Giri, Ashwani K. Malhotra, John R. Pennacchia, Eric D. Perfecto, Roy Yu
  • Copper film including laminated impurities
    Patent number: 6235406
    Abstract: A structure for enhancing electromigration resistance within a copper film includes impurities laminated within the film and other additives incorporated in the film to form intermetallic compounds. Metal grain boundary growth and metal surface mobility is suppressed within the composite copper film. The present invention provides an alloy seed layer and laminated impurities and provides indium, tin, titanium, their compounds with oxygen, and their complexes with oxygen, carbon, and sulfur, incorporated into other films. Intermetallics are disposed at grain boundaries and reduce copper atom mobility. A further aspect of the present invention is a barrier layer formed by combining additives included in an alloy seed layer with materials otherwise unsuitable for barrier material functions.
    Type: Grant
    Filed: July 13, 2000
    Date of Patent: May 22, 2001
    Assignee: International Business Machines Corporation
    Inventor: Cyprian E. Uzoh
  • Abrasion, corrosion, and gall resistant overlay alloys
    Patent number: 6232000
    Abstract: An overlayer for a use on industrial components such as steel mill caster rolls which require enhanced abrasion, corrosion, and gall resistance. The overlayer has relatively lower carbon levels and relatively higher molybdenum levels relative to other alloys used as overlayers, The overlayer has reduced susceptibility to sensitization and enhanced corrosion resistance.
    Type: Grant
    Filed: December 29, 1998
    Date of Patent: May 15, 2001
    Assignee: Stoody Company
    Inventors: Daya Singh, Ravi Menon
  • Method to reduce partial discharge in high voltage stator coil's roebel filler
    Patent number: 6228494
    Abstract: A filler material for the exterior surface of a high voltage coil having Roebeled strands is described. The filler material comprises an epoxy resin impregnated felt which is wrapped in a low resistance conductive tape. The conductive tape reduces potential gradients across the filler material, thereby reducing the occurrence of unwanted electrical discharges in the filler voids.
    Type: Grant
    Filed: December 2, 1998
    Date of Patent: May 8, 2001
    Assignee: Siemens Westinghouse Power Corporation
    Inventor: Franklin T. Emery
  • Method of improving oxidation and corrosion resistance of a superalloy article, and a superalloy article obtained by the method
    Patent number: 6228513
    Abstract: A method of improving the oxidation and corrosion resistance of a superalloy article comprises providing a superalloy substrate having a sulphur content which is less than 0.8 ppm by weight, and depositing on the substrate a protective antioxidation coating having a sulphur content also less than 0.8 ppm by weight. A heat barrier layer may also be provided by depositing on the protective anti-oxidation coating a ceramic coating of columnar structure.
    Type: Grant
    Filed: September 22, 1998
    Date of Patent: May 8, 2001
    Assignee: Societe Nationale d'Etude et de Construction de Moteurs d'Aviation “SNECMA”
    Inventors: Yann Jaslier, Serge Alexandre Alperine, Jacques Louis Leger
  • Cylinder block for automotive engine and method for fabricating the same
    Patent number: 6224989
    Abstract: A cylinder block for an automotive engine that includes a sintered cylindrical body made of a first metal, the sintered cylindrical body having a plurality of pores. A powder of a second metal is dispersed into the pores of the sintered cylindrical body, and a cylinder block body is disposed around the sintered cylindrical body while filling the pores of the sintered cylindrical body. The main body is made of a third metal and integrally formed with the sintered cylindrical body by an intemetallic compound formed by a reaction between the first, second, and third metals.
    Type: Grant
    Filed: February 25, 1999
    Date of Patent: May 1, 2001
    Assignee: Hyundai Motor Company
    Inventor: Jun-su Kim
  • Low stress, water-clear zinc sulfide
    Patent number: 6221482
    Abstract: The machinability of water-clear zinc sulfide articles produced by chemical vapor deposition and high temperature, high isostatic pressure (HIP) treatment is enhanced by extending the time over which the article is cooled following the HIP treatment. The resulting low stress, water-clear zinc sulfide articles can be more accurately finished/machined to precise shapes, such as are required in optical applications, than was previously possible.
    Type: Grant
    Filed: April 7, 1999
    Date of Patent: April 24, 2001
    Assignee: CVD Inc.
    Inventor: Jitendra S. Goela
  • Coating consisting of hypereutectic aluminum/silicon alloy and/or an aluminum/silicon composite material
    Patent number: 6221504
    Abstract: A tribological coating made of a copper-free highly hypereutectic aluminum/silicon alloy and/or of a copper-free aluminum/silicon composite material composed such that fine silicon primary crystals and/or silicon particles, intermetallic phases, and oxides form as hard particles during the production of the layers in the atmospheric thermal spraying method and/or are anchored in the structure. The surface of the coating can be machined economically by short-chipping using conventional tools, so that additional alloy elements such as copper for forming additional intermetallic phases such as Al2Cu can be eliminated. This is significant because conventional AlSi cylinder liners in reciprocating engines pose problems in conjunction with certain fuels because of their copper content.
    Type: Grant
    Filed: August 3, 1998
    Date of Patent: April 24, 2001
    Assignee: DaimlerChrysler AG
    Inventors: Harald Pfeffinger, Micheal Voit, Tilman Haug, Patrick Izquierdo, Herbert Gasthuber, Oliver Storz, Axel Heuberger, Franz Rueckert, Peter Stocker, Helmut Proefrock
  • Lap joint welding arrangement and a related welding method for forming the same
    Patent number: 6221505
    Abstract: A first member and a second member have end portions overlapped and welded by irradiating a laser beam on an outer surface of a lap portion. A front end surface of a fused portion slants at an obtuse angle larger than 90° with respect to a naked outer surface of the second member. A dilution rate S=B/(A+B) is equal to or less than 45%, where “A” represents a cross-sectional area of the fused portion merging into the first member and “B” represents a cross-sectional area of the fused portion merging into the second member.
    Type: Grant
    Filed: September 17, 1998
    Date of Patent: April 24, 2001
    Assignee: Denso, Corporation
    Inventors: Hideaki Shirai, Yoshinori Ohmi, Hiroyasu Morikawa