Thickness Of Individual Layer Specified Patents (Class 428/926)
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Patent number: 6387538Abstract: A surface-treated sheet for fuel tanks includes a cold-rolled steel sheet with a low carbon content, a zinc or zinc-based alloy plating layer formed on the steel sheet, and a chromate film coated on the zinc or zinc-based alloy plating layer. The chromate film is formed from a chromate solution. The chromate solution includes a subject solution and an aqueous silane solution in an amount ranging from 5 to 50% by weight of the subject solution. The subject solution contains a chrome aqueous solution where the concentration of chrome is in the range of 5-50 g/l and the ratio of trivalent chrome to the chrome content is in the range of 0.4 to 0.8.Type: GrantFiled: May 8, 2000Date of Patent: May 14, 2002Assignee: Pohang Iron & Steel Co., Ltd.Inventors: Jae-Ryung Lee, Sang-Geol No, Soo-Hyoun Cho, Youn-Kyun Song, Sam-Kyu Chang
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Patent number: 6376089Abstract: The present invention provides a process for producing a rare earth metal-based permanent magnet having, on its surface, a corrosion-resistant film containing inorganic fine particles having a specific average particle size and dispersed in a film phase formed from a silicon compound. In a heat treatment for forming a film by a hydrolyzing reaction and a thermally decomposing reaction of the silicon compound, followed by a polymerizing reaction, a stress is generated within the film by the shrinkage of the film. In the corrosion-resistant film formed by the producing process according to the present invention, however, such stress is dispersed by the presence of the inorganic fine particles and hence, the generation of physical defects such as cracks is inhibited. In addition, voids between the adjacent inorganic fine particles are filled with the film phase formed from the silicon compound and hence, the formed film is dense.Type: GrantFiled: August 29, 2000Date of Patent: April 23, 2002Assignee: Sumitomo Special Metals Co., Ltd.Inventors: Takeshi Nishiuchi, Atsushi Kikugawa, Fumiaki Kikui
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Patent number: 6376028Abstract: The described device is introduced into a plastic container with a narrow opening and serves a plasma enhanced process for treating the inside surface of the container. The device (2) extends between the container opening and the container bottom along the container axis (X) and comprising a gas feed tube (23) for feeding a process gas into the container and permanent magnets (24) for establishing a stationary magnetic field inside the container. The magnets (24) form a column of superimposed magnets which is arranged inside the gas feed tube (23). The north and south poles of each magnet are positioned on opposite sides of the container axis (X). The device may also comprise cooling means (25) for cooling the gas feed tube and the magnets.Type: GrantFiled: July 24, 2000Date of Patent: April 23, 2002Assignee: Tetra Laval Holdings & Finance S.A.Inventors: Jacques Laurent, Pierre Fayet, Robert Devidal
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Patent number: 6372357Abstract: An external component of an endoscope includes an aluminum alloy base member whose surface is subjected to anodic oxidation, and thereafter, is subjected to an electrolytic deposition thereon.Type: GrantFiled: September 21, 2000Date of Patent: April 16, 2002Assignee: Asahi Kogaku Kogyo Kabushiki KaishaInventors: Shinji Hayakawa, Rensuke Adachi, Kunitoshi Ikeda, Masanao Abe
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Patent number: 6372364Abstract: A thin film product having a nanostructured surface, a laminate product including the thin film and a temporary substrate opposite the nanostructured surface, a laminate product including the thin film and a final substrate attached to the nanostructured surface and a method of producing the thin film products. The thin film is particularly useful in the electronics industry for the production of integrated circuits, printed circuit boards and EMF shielding. The nanostructured surface includes surface features that are mostly smaller than one micron, while the dense portion of the thin film is between 10-1000 nm. The thin film is produced by coating a temporary substrate (such as aluminum foil) with a coating material (such as copper) using any process. One such method is concentrated heat deposition or a combustion, chemical vapor deposition process.Type: GrantFiled: August 18, 1999Date of Patent: April 16, 2002Assignee: MicroCoating Technologies, Inc.Inventors: Andrew T. Hunt, Henry A. Luten, III
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Patent number: 6365284Abstract: Disclosed are compositions of matter which include a thin metallic and/or metallic oxide, nitride, carbide, silicide, boride, or sulfide coating disposed directly upon a polymeric substrate, in the absence of a carrier layer for the thin coating. Also disclosed are methods to make the composition and an apparatus to practice the method.Type: GrantFiled: June 4, 1999Date of Patent: April 2, 2002Assignee: Crown Operations International, Ltd.Inventor: Curtis J. Liposcak
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Patent number: 6361883Abstract: A composite sheet steel of maraging steel has an outer layer and an inner layer, wherein the outer layer is harder than the inner layer and the inner layer is more tenacious than the outer layer. An intermediate layer is positioned between the inner layer and the outer layer, wherein the intermediate layer is thinner than the inner and the outer layers.Type: GrantFiled: September 26, 2000Date of Patent: March 26, 2002Assignee: Aktiengesellschaft der Dillinger HüttenwerkeInventors: Christoph Dilg, Uwe Hofmann, Claus Just, Hans-Jürgen Rögele, Helmut Schönberger, Jürgen Vogt
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Patent number: 6355360Abstract: A sheet laminate for use in a press lay-up between printed circuit board panels having a steel substrate layer and a copper foil layer releasably bonded with resistance welds and adhesive to at least one surface of the substrate layer.Type: GrantFiled: October 5, 2000Date of Patent: March 12, 2002Assignee: R.E. Service Company, Inc.Inventor: Mark S. Frater
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Patent number: 6355364Abstract: Processes for preparing copper-INVAR-copper (CIC) for use in making chip packaging and the CIC created. One process comprises annealing a CIC section at a temperature in a range of 1475° F. to 1625° F. for a time in a range of 40 to 120 seconds. Another process includes heat treating a CIC section at a temperature in a range of 1275° F. to 1425° F. for a time in a range of 40 to 120 seconds. The above processes can be combined. The CIC section created exhibits unique electrical, physical, and mechanical properties.Type: GrantFiled: June 29, 1999Date of Patent: March 12, 2002Assignee: International Business Machines CorporationInventors: Robert M. Japp, Lisa J. Jimarez, Bonnie S. McClure
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Patent number: 6340535Abstract: This invention relates to a method for the heat treatment of a ZnSe crystal substrate to dope it with Al as a donor impurity, a ZnSe crystal substrate prepared by this heat treatment and a light-emitting device using the ZnSe crystal substrate, in particular, the method for the heat treatment of a ZnSe crystal substrate comprising previously forming an Al film on the substrate, first subjecting the substrate to a heat treatment in a Se atmosphere and then subjecting to a heat treatment in a Zn atmosphere.Type: GrantFiled: May 18, 2001Date of Patent: January 22, 2002Assignee: Sumitomo Electric Industries, Ltd.Inventors: Yasuo Namikawa, Shinsuke Fujiwara
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Patent number: 6337147Abstract: Improved shape and strength of the weld in a welded structure are obtained by use of a weldable aluminum product comprising a structural component which is a sheet, a plate or an extruded body and is made of an aluminum alloy containing not more than 1.5 wt % Zn. This component has, adhered on at least one side, a cladding layer made of an AA7xxx-series alloy having a corrosion potential lower than that of the alloy of the structural component. The alloy of the structural component is preferably an AA5xxx-series alloy containing Mg in the range 2 to 6 wt %.Type: GrantFiled: March 17, 2000Date of Patent: January 8, 2002Assignee: Corus Aluminium Walzprodukte GmbHInventors: Alfred Johann Peter Haszler, Klaus Alfons Mechsner
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Patent number: 6335107Abstract: In accordance with the invention, a metal substrate is coated with a multilayer surface finish comprising, in succession, an amorphous metal underlayer, a corrosion-resistent metal middle layer and one or more outer layers of precious metal. In an exemplary embodiment the metal substrate comprises copper alloy, the amorphous metal underlayer is Ni—P, the middle layer is nickel and the outer layer is palladium. The resulting structure is particularly useful as an electrical connector.Type: GrantFiled: September 23, 1999Date of Patent: January 1, 2002Assignee: Lucent Technologies Inc.Inventors: Joseph Anthony Abys, Chonglun Fan
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Patent number: 6335104Abstract: A method for preparing a copper pad surface for electrical connection that has superior diffusion barrier and adhesion properties is provided. In the method, a copper pad surface is first provided that has been cleaned by an acid solution, a protection layer of a phosphorus or boron-containing metal alloy is then deposited on the copper pad surface, and then an adhesion layer of a noble metal is deposited on top of the protection layer. The protection layer may be a single layer, or two or more layers intimately joined together formed of a phosphorus or boron-containing metal alloy such as Ni-P, Co-P, Co-W-P, Co-Sn-P, Ni-W-P, Co-B, Ni-B, Co-Sn-B, Co-W-B and Ni-W-B to a thickness between about 1,000 Å and about 10,000 Å. The adhesion layer can be formed of a noble metal such as Au, Pt, Pd and Ag to a thickness between about 500 Å and about 4,000 Å.Type: GrantFiled: February 22, 2000Date of Patent: January 1, 2002Assignee: International Business Machines CorporationInventors: Carlos J. Sambucetti, Daniel C. Edelstein, John G. Gaudiello, Judith M. Rubino, George Walker
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Patent number: 6329076Abstract: A hydrogen storage material (1) having excellent hydrogen storage capability and having such a low hydrogen desorption temperature as not to significantly hinder the use thereof, and also capable of being mass-produced, and a manufacturing method of the same can be obtained. The hydrogen storage material has a layered deformation structure including plastic deformation, and one layer (2) of the layered deformation structure is formed from an alloy or compound including an element of groups 2A, 3A and 4A or an element of at least one of the groups 2A, 3A and 4A, and another layer (3) being in contact with the one layer is formed from an alloy or compound including an element of groups 6A, 7A and 8A or an element of at least one of the groups 6A, 7A and 8A.Type: GrantFiled: February 14, 2001Date of Patent: December 11, 2001Assignee: Sumitomo Electric Industries, Ltd.Inventors: Nozomu Kawabe, Kouichi Sogabe, Shousaku Yamanaka, Yoshinobu Takeda, Takashi Uemura
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Patent number: 6329070Abstract: The periodic stress and strain fields produced by a pure twist grain boundary between two single crystals bonded together in the form of a bicrystal are used to fabricate a two-dimensional surface topography with controllable, nanometer-scale feature spacings (e.g., from 50 nanometers down to 1.5 nanometers). The spacing of the features is controlled by the misorientation angle used during crystal bonding. One of the crystals is selected to be thin, on the order of 5-100 nanometers. A buried periodic array of screw dislocations is formed at the twist grain boundary. To bring the buried periodicity to the surface, the thin single crystal is etched to reveal an array of raised elements, such as pyramids, that have nanometer-scale dimensions. The process can be employed with numerous materials, such as gold, silicon and sapphire. In addition, the process can be used with different materials for each crystal such that a periodic array of misfit dislocations is formed at the interface between the two crystals.Type: GrantFiled: December 7, 2000Date of Patent: December 11, 2001Assignee: Cornell Research Foundation, Inc.Inventors: Stephen L. Sass, Christopher K. Ober, Yuri Suzuki
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Patent number: 6329077Abstract: A plate shaped compression mold, a process for producing the same and a process for making laminate therewith. The plate-shaped compression mold for producing sheet laminate including synthetic resin with a metal coating on at least one surface thereof has a surface for contacting the metal coating of the sheet laminate, which surface has a Rockwell C hardness of higher than about 44 and a thermal coefficient of linear expansion which differs from that of the metal coating by not more than about 2.5×10−6/K, thereby substantially preventing warping or wrinkling of the metal coating during the compression molding process.Type: GrantFiled: January 21, 2000Date of Patent: December 11, 2001Assignee: Bohler Bleche GmbHInventors: Alfred Kügler, Werner Josef Jerlich
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Patent number: 6316122Abstract: A metal fiber of titanium or titanium alloy has given equivalent area diameter and specific surface area and is produced by a bundle drawing method wherein mild steel is used as a material for covering layer and outer housing and a composite wire is subjected to a heat treatment at a given temperature.Type: GrantFiled: August 31, 1998Date of Patent: November 13, 2001Assignee: Bridgestone Metalpha CorporationInventor: Shuji Amamoto
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Patent number: 6312834Abstract: The present invention, which is aimed at providing a method for manufacturing a clad material that can be used for the anode cases and cathode cases of button-type microbatteries and other miniature electronic devices requiring the use of comparatively thin, drawable sheets, allows the difference between r values, or Lankford values (which characterize the plastic anisotropy between the rolling/bonding direction of a clad material and a direction at a prescribed angle to the rolling/bonding direction) to be reduced by preforming cold rolling at a reduction of 30% or lower in addition to performing a conventional method for manufacturing a clad material, making it possible to substantially enhance the mechanical strength of the clad material and to mass-produce clad materials that have low reduction anisotropy.Type: GrantFiled: February 2, 2000Date of Patent: November 6, 2001Assignee: Sumitomo Special Metals Co., Ltd.Inventors: Masaaki Ishio, Yoshiki Takai
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Patent number: 6312821Abstract: The coating structure having a corrosion resistance of the invention contains a formation film formed on the surface of an aluminum alloy material. The formation film is subjected to a zirconium phosphate treatment. Because the zirconium phosphate reacts with an oxide film on the surface of the aluminum alloy to form a zirconium boehmite layer and to increase the adhesion of the coating material, a corrosion resisting structure is obtained without need of a sealing treatment while restraining the increase of the product cost. Also, a primer layer is formed on the outer surface of the formation film and the primer layer is composed of phosphomolybdic acid.Type: GrantFiled: August 30, 2000Date of Patent: November 6, 2001Assignee: Honda Giken Kogyo Kabushiki KaishaInventors: Norimasa Takasaki, Hiroyuki Murata, Yoshiyuki Matsuda, Morihiro Takemura
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Patent number: 6309762Abstract: An article of manufacture having a wear-resistant cylindrical surface is made up of a metallurgically tough base steel with a substantially cylindrical surface, a thin, cylindrical metal sleeve mated to and affixed to the cylindrical surface of the base steel, and a composite metallic coating containing particles having a hardness greater than Rockwell C 70 metallurgically bonded to the surface of the sleeve opposite the base steel/sleeve interface.Type: GrantFiled: November 9, 1999Date of Patent: October 30, 2001Assignee: Conforma CladInventor: Michael A. Speckert
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Patent number: 6309759Abstract: A sliding bearing, which comprises a lining and a bismuth or bismuth-alloy overlay having improved compatibility and fatigue resistance is provided. The overlay is characterized by the following orientation. The relative ratio of the X-ray diffraction intensity I[hkl] of the bismuth or bismuth-alloy overlay defined below satisfies the following conditions (a) and (b): (a) the relative ratio of the X-ray diffraction intensity I[hkl] of planes other than the {012} planes is from 0.2 to 5 times as high as the ratio of the X-ray diffraction intensity I[012], namely, 0.2I[012]≦I[hkl]≦5I[012] (b) the relative ratio of the X-ray diffraction intensity I[hkl] of three or more planes other than {012} planes ranges from 0.5 to 2 times as high as the ratio of the X-ray diffraction intensity I[012], namely, 0.5I[012]≦2I[012].Type: GrantFiled: July 7, 2000Date of Patent: October 30, 2001Inventors: Takashi Tomikawa, Hirofumi Michioka, Yoshio Fuwa, Yoshio Shimura, Shigeru Hotta
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Patent number: 6309761Abstract: A process in which a steel is dipped in an aluminum-based bath wherein the composition and mean temperature of the bath and the immersion temperature of the steel are adjusted to obtain, in the immersion zone of the steel, a local bath temperature and composition resulting in an equilibrium with the solid phase designated as &thgr;≡FeAl3. Dipping is performed at a temperature higher than the temperatures normally employed in the art and a coating is obtained having at the interface with the steel an alloy layer significantly smaller in thickness than the art. The coating obtained better resists cracking and corrosion.Type: GrantFiled: February 18, 2000Date of Patent: October 30, 2001Assignee: SollacInventors: Philippe Guesdon, Jean-Pierre Godin, Eric Lesueur
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Patent number: 6306523Abstract: The present invention relates to a porous electrode wire for use in electrical discharge machining and the method of manufacturing the same. The wire improves the machining speed at least 15% compared with a conventional zinc coated wire, which results from an increased cooling ability of the wire with a cooling liquid because of the increase in the surface area of the wire having porous surface morphology. Since the surface of the porous wire presents uniform profile of outer periphery rather than surface protrusions, it does not affect machining accuracy. Further, the porous nature of the wire is expected to improve flushability during the electrical discharge machining, providing spaces to eliminate particles of the machining. Therefore, in accordance with the method of the present invention, a zinc coated wire having improved performance of machining speed and flushability compared with a conventional coated wire can be provided without additional processes.Type: GrantFiled: May 28, 1999Date of Patent: October 23, 2001Inventor: Ki Chul Seong
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Patent number: 6306526Abstract: A metal lid for use in hermetic sealing of a semiconductor package comprises a lid body comprising a metal plate having a solder layer secured to the entire surface of the metal lid by cladding. The lid is placed in position on a substrate and can seal the resulting package by heating to melt the solder layer. The lid can be readily mass-produced and can seal the package with high seal reliability and without deposition of solder balls on the inner wall of the package.Type: GrantFiled: September 10, 1999Date of Patent: October 23, 2001Assignees: Sumitomo Metal (SMI) Electronics Devices Inc., Senju Metal Industry Co. Ltd.Inventors: Tetsuya Yamamoto, Shigeki Kawamura, Sanae Taniguchi
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Patent number: 6280856Abstract: A deformable sheet material at least partly comprising a sheet metal or metal foil which is corrugated, e.g. by rolling, in continuous waveform in two directions (A, B) substantially orthogonal to each other. The sheet material can comprise aluminum foil with a thickness between 0.005-0.4 mm designed as a ribbon or a strip which prior to the rolling is folded in the longitudinal direction where an intermediate layer, e.g. of aluminum, can be placed between the two material layers.Type: GrantFiled: October 11, 1996Date of Patent: August 28, 2001Assignee: V. Kann Rasmussen Industri A/SInventors: Susanne Bjergegaard Andersen, Per Jacobsen
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Patent number: 6238786Abstract: The invention relates to a method for gloss coating articles or a portion of an article's surface and articles produced from this method. A corrosion-inhibiting polishing base coat is applied in a known fashion, after which a high-gloss layer produced by atomization, preferably magnetron atomization, is applied. Then, a transparent, wear-resistant top coat layer is applied in a known fashion. The articles can also be pretreated, if desired, and given a protective or other layers. By using this method, parts for vehicles, especially vehicle wheels, can be produced in a great variety of colors and with improved qualities.Type: GrantFiled: January 14, 2000Date of Patent: May 29, 2001Assignee: Dr. Ing. h.c.F. Porsche AGInventors: Fritz Kaeumle, Reinhold Separautzki, Klaus Goedicke, Fred Fietzke
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Patent number: 6235409Abstract: A bright finish aluminum alloy on high strength aluminum or aluminum alloy lamination is disclosed including a bright finish top sheet, a high strength aluminum or aluminum alloy substrate, and an adhesive bonding the bright finish metal top sheet to the high strength aluminum or aluminum alloy substrate to provide a bright finish aluminum on high strength aluminum or aluminum alloy lamination product having brighter finish than a sheet product of said high strength aluminum or aluminum alloy and higher strength than a sheet product of said bright finish aluminum of the same thickness as said lamination product, wherein said lamination product withstands galvanic corrosion. In one aspect, the bright finish metal top sheet is 5657 aluminum foil. In one aspect, the high strength aluminum alloy is 5182 alloy sheet.Type: GrantFiled: April 14, 2000Date of Patent: May 22, 2001Assignee: Alcoa Inc.Inventors: Daniel L. Serafin, Paul B. Schultz, Albert L. Askin, Donald J. Stanko
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Patent number: 6214450Abstract: A high solids, water-borne coating comprises a latex polymer, non-film-forming particulates and water. The high solids coating contains up to 90% solids (non-volatiles/volume) and pigment volume concentration (PVC) that can range between about 5% to 95%. The thick-coverage surface coating herein dries at a fast rate, provides excellent through-dry properties as measured by tensile, elongation, and water resistance, and can replace traditional coatings used in multi-coat processes. The coating herein can contain up to about 40% hollow microspheres to yield a dried coating that has up to about 57% PVC and be used as a roof coating that meets a required elongation of at least 200%.Type: GrantFiled: February 25, 1998Date of Patent: April 10, 2001Assignee: Tremco IncorporatedInventors: Frank A. Wickert, Donald C. Portfolio, Steven J. Conway, Gregory P. Bidinger, Stephen R. Peters, Jr.
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Patent number: 6214451Abstract: The invention relates to an antistatic resin molded article which comprises a thermoplastic resin substrate and an antistatic resin layer applied to the surface of the resin substrate. The antistatic resin layer is formed of a coating layer produced by dispersing conductive and extremely fine carbon long-fibers in the thermoplastic resin thereby holding the antistatic properties and enabling thermoforming. As the extremely fine carbon fiber, a pilled fiber aggregate composed of fibers with a fiber diameter of 3.5 to 500 nm and an aspect ratio of 100 to 3000 or an agglomerate in which the aggregates are agglomerated is used.Type: GrantFiled: August 10, 1998Date of Patent: April 10, 2001Assignee: Takiron Co., Ltd.Inventors: Makoto Ihira, Masato Sakai
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Patent number: 6210809Abstract: The contact material of the present invention comprises: an anti-arcing constituent consisting of at least one TiC, V and VC of which the content is 30˜70 volume % and whose mean particle (grain) size is 0.1˜9 &mgr;m; C whose content is 0.005˜0.5 weight % with respect to the anti-arcing constituent, whose diameter is 0.01˜5 &mgr;m when its shape is calculated as spherical, and which is in non-solid solution condition or condition in which it does not form a chemical compound; and a conductive constituent consisting of Cu and constituting the balance.Type: GrantFiled: December 31, 1998Date of Patent: April 3, 2001Assignee: Kabushiki Kaisha ToshibaInventors: Tsutomu Okutomi, Atsushi Yamamoto, Iwao Ohshima, Tsuneyo Seki, Mitsutaka Homma, Takashi Kusano
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Patent number: 6203931Abstract: The present invention provides a lead frame material and a process for manufacturing a lead frame material. The process includes forming an intermediate layer on a lead frame substrate by vacuum deposition and forming a top protective layer on the intermediate layer by vacuum deposition. By using vacuum deposition, the coating material can be selected from a wider variety of materials; thus, coatings with novel compositions can be formed. The intermediate layer can be Ni, Ag, W, Zn, Cr, Mo, Cu, Sn, Al, Ta, Co, Nb, or alloys thereof, and the top protective layer can be Pt, Ir, Re, Ru, Rh, Pd, Au, Ag, or alloys thereof.Type: GrantFiled: February 5, 1999Date of Patent: March 20, 2001Assignee: Industrial Technology Research InstituteInventors: Chun-Hsun Chu, Shyi-Yi Chen, Jui-Fen Pai
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Patent number: 6197435Abstract: An article comprising a metal circuit and/or a heat-radiating metal plate formed on a ceramic substrate, wherein the metal circuit and/or the heat-radiating metal plate comprise either (1) the following first metal-second metal bonded product, wherein the first metal and the second metal are different, or (2) the following first metal-third metal-second metal bonded product, and wherein in (1) and (2), the first metal is bonded to the ceramic substrate; first metal: a metal selected from the group consisting of aluminum (Al), lead (Pb), platinum (Pt) and an alloy containing at least one of these metal components; second metal: a metal selected from the group consisting of copper (Cu), silver (Ag), gold (Au), aluminum (Al) and an alloy containing at least one of these metal components; and third metal: a metal selected from the group consisting of titanium (Ti), nickel (Ni), zirconium (Zr), molybdenum (Mo), tungsten (W) and an alloy containing at least one of these metal components.Type: GrantFiled: October 20, 1998Date of Patent: March 6, 2001Assignee: Denki Kagaku Kogyo Kabushiki KaishaInventors: Yoshihiko Tsujimura, Miyuki Nakamura, Yasuhito Fushii
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Patent number: 6183883Abstract: Brazing or soldering materials which effectively improve the wettability of the brazing alloy or solder without using flux and a method of manufacturing such materials are provided. A metallic base is placed on turntable inside a vacuum chamber. A copper target is affixed to a sputtering electrode above the metallic base. Air is removed from the vacuum chamber through a vacuum outlet to increase the vacuum therein to a specific pressure, and carbon tetrafluoride and argon are introduced from a gas inlet to control the sputter pressure. Thereafter, turntable is rotated while a high frequency voltage is applied between the target and the metallic base to form a halide layer, such as a layer of copper fluoride, on a surface of metallic base.Type: GrantFiled: June 16, 1998Date of Patent: February 6, 2001Assignee: Seiko Epson CorporationInventors: Yoshiaki Mori, Katsuhiro Takahashi, Takuya Miyakawa, Yasushi Karasawa
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Patent number: 6183880Abstract: This invention provides a composite foil comprising an aluminum carrier layer and an ultra-thin copper foil having a protective layer disposed between them comprising a porous copper layer and an interpenetrating zinc layer. A process for producing such composite foils comprises the steps of preparing the surface of the aluminum carrier, electrodepositing a porous copper layer on the aluminum carrier layer followed by electrodepositing a zinc layer, and then electrodepositing two layers of copper to form the ultra-thin copper foil. The composite foil provides a uniform bond strength between the aluminum carrier and the protective layer which is adequate to prevent separation of the carrier and ultra-thin copper foil during handling and lamination, but which is significantly lower than the peel strength of a copper/substrate bond, so that the carrier can easily be removed after lamination of the composite foil to an insulating substrate.Type: GrantFiled: August 7, 1998Date of Patent: February 6, 2001Assignee: Mitsui Mining & Smelting Co., Ltd.Inventors: Junshi Yoshioka, Shinichi Obata, Makoto Dobashi, Takashi Kataoka
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Patent number: 6143406Abstract: A magnetic composite tape for inhibiting radiation noise and a radiation noise inhibiting component using such a magnetic composite tape which can be easily attached to a cable and has a high radiation noise inhibiting effect are provided. A magnetic composite tape for radiation noise control has an elongated shape, and includes a magnetic band member and a metal foil provided on the surface of the magnetic band member. The magnetic band member includes a rubber or a flexible resin and ferrite magnetic powders. One side of the metal foil in a width direction projects from one side of the magnetic band member. An adhesive is applied on the other surface of the magnetic band member. The composite tape is wound and attached with the adhesive applied on the other surface of the magnetic band member at a location on a cable, such as an interface cable, a head cable (power supply cable) or the like, which is to located close to an electronic apparatus containing an oscillation circuit.Type: GrantFiled: February 18, 1999Date of Patent: November 7, 2000Assignee: Murata Manufacturing Co., Ltd.Inventors: Katsuyuki Uchida, Masami Sugitani
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Patent number: 6139977Abstract: A surface finish which provides improved wirebonding performance for integrated circuit packages is disclosed. The surface finish which is formed on a substrate includes a palladium layer and one or more material layers. The one or more material layers are interposed between the substrate and the palladium layer. The palladium layer has a hardness that is less than about 500 (KHN.sub.50) while at least one material layer has a hardness that is less than about 250 (KHN.sub.50).Type: GrantFiled: June 10, 1998Date of Patent: October 31, 2000Assignee: Lucent Technologies Inc.Inventors: Joseph Anthony Abys, Alan Blair, Chonglun Fan
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Patent number: 6136454Abstract: An aluminum or aluminum alloy surface which during use is exposed to sliding friction is coated to provide a chemical conversion coating of tin comprising 0.2-10.0 wt. % cobalt. For example, a swash plate type compressor has a cylinder block with cylinder bores disposed parallel to the axis of the cylinder block. A rotary shaft rotatably mounted within the cylinder block carries an aluminum swash plate. The swash plate has a coating preferably between 0.8 to 2.5 microns. The coating on the swash plate permits the use of low silicon alloy aluminum without the need of metal plating or high finish polishing.Type: GrantFiled: May 24, 1999Date of Patent: October 24, 2000Assignee: Ford Motor CompanyInventor: Carl Edward Cordy
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Patent number: 6129996Abstract: An aluminum or aluminum alloy surface which during use is exposed to sliding friction has a chemical conversion coating of mostly tin with 0.2-10.0 wt. % cobalt and 0.1 to 12 wt. % bismuth. For example, a swashplate of a swashplate type compressor may be conversion coated on at least part thereof, that is the part that during use contact the shoes. Preferably, the coating is between 0.8 to 2.5 microns thick. The coating on the swash plate permits the use of low silicon alloy aluminum without the need of metal plating or high finish polishing.Type: GrantFiled: August 16, 1999Date of Patent: October 10, 2000Assignee: Ford Motor CompanyInventor: Carl Edward Cordy
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Patent number: 6117566Abstract: A lead frame material, which can be provided with an etching stop layer without requiring a troublesome process such as vapor deposition and has an excellent heat-resistance, is obtained by forming a nickel-phosphorus alloy layer (B) of 1.6 to 10 .mu.m thickness containing 0.3 to 1.0 wt % of phosphorus on a copper or copper alloy layer (A) of 35 to 300 .mu.m thickness, and forming an optional copper layer (C) of 0.2 to 30 .mu.m thickness on the nickel-phosphorus alloy layer (B).Type: GrantFiled: July 21, 1999Date of Patent: September 12, 2000Assignees: Nippon Denkai, Ltd., North CorporationInventors: Tatsunori Matsumoto, Masami Noguchi, Kazuyoshi Aso
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Patent number: 6102656Abstract: A segmented abradable ceramic coating system having superior abradability and erosion resistance is disclosed. The system includes a duct segment having a metallic substrate, a MCrAlY bond coat on the substrate and a segmented abradable ceramic coating on the bond coat. The segmented abradable ceramic coating includes a base coat foundation layer, a graded interlayer and an abradable top layer for an overall thickness of preferably about 50 mils (1.270 mm). The coating is characterized by a plurality of vertical microcracks. By precisely controlling the deposition parameters, composition of the layers and layer particle morphology, segmentation is achieved, as well as superior abradability and erosion resistance.Type: GrantFiled: September 26, 1995Date of Patent: August 15, 2000Assignee: United Technologies CorporationInventors: David M. Nissley, Harold D. Harter, Daniel R. Godin, George E. Foster
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Patent number: 6083633Abstract: An electrical conductor has a copper base substrate coated with a tin base coating layer. To inhibit the formation of a copper/tin intermetallic and the resultant depletion of the free, unreacted, tin utilized as an oxidation and corrosion barrier, a barrier is interposed between the substrate and the coating. In a first embodiment, the barrier is formed from multiple constituent layers, at least one of which is copper. The thickness ("y") of the copper layer is dependent on the anticipated service temperature and satisfies the equation y=(-1.52+0.0871x+0.00859 t).+-.50% where t=anticipated time at the service temperature, x=anticipated service temperature (Celsius), and y=the thickness of the copper layer in microinches. In a second embodiment, the barrier layer is formed from one or more constituent layers, at least one of which is iron or iron base.Type: GrantFiled: June 16, 1997Date of Patent: July 4, 2000Assignee: Olin CorporationInventors: Julius C. Fister, Szuchain F. Chen, Christoper P. Laurello, Arvind Parthasarathi, Derek E. Tyler
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Patent number: 6051327Abstract: A non-corrosive metal on aluminum or aluminum alloy lamination is disclosed including a non-corrosive metal top sheet, an aluminum or aluminum alloy substrate, and an adhesive bonding the non-corrosive metal top sheet to the aluminum or aluminum alloy substrate to provide a non-corrosive metal on aluminum or aluminum alloy lamination product having lighter weight and less cost than a sheet product of the non-corrosive metal of identical thickness, wherein the lamination product withstands galvanic corrosion between the non-corrosive metal top sheet and the aluminum or aluminum alloy substrate. In one aspect, the non-corrosive metal top sheet is stainless steel. In one aspect, the non-corrosive metal top sheet is nickel or nickel alloy.Type: GrantFiled: December 17, 1997Date of Patent: April 18, 2000Assignee: Aluminum Company of AmericaInventors: Daniel Serafin, Paul B. Schultz, Albert L. Askin, Donald J. Stanko
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Patent number: 6004483Abstract: Mixture of a polythiophene preparation which contains a polythiophene salt polythiophene.sup..sym. An.sup..crclbar. in which the polythiophene contains positively charged and uncharged recurring units of the formula ##STR1## in which R.sub.1 and R.sub.2 independently of one another stand for hydrogen or a C.sub.1 -C.sub.4 alkyl group or together form an optionally substituted C.sub.1 -C.sub.4 alkylene radical, preferably a methylene radical optionally substituted with alkyl groups, an ethylene-1,2 radical optionally substituted with C.sub.1 -C.sub.12 alkyl groups or phenyl groups, a propylene-1,3 radical or a cyclohexylene-1,2 radical, andAn.sup..crclbar. denotes a polyanion,and coating compositions which are curable by ionising radiation, and the use thereof in order to produce scratch-resistant electrically conductive coatings.Type: GrantFiled: June 24, 1996Date of Patent: December 21, 1999Assignee: Bayer AktiengesellschaftInventors: Friedrich Jonas, Klaus Lerch, Wolfgang Fischer
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Patent number: 5959021Abstract: The present invention is a process for protecting articles from electrostatic discharge (ESD) in which a coating is applied directly onto the article in liquid form and the resulting coating provides a surface resistivity that protects the underlying article from ESD. The composition contains a carrier material, carbon black, and a transition metal. The composition forms a coating on an article when applied as a liquid and dried thereon. The ratio of carrier solids to carbon black is about 100 parts by weight polymer to about 0.5 to about 3 parts by weight carbon black. The ratio of carrier solids to transition metal is about 100 parts by weight about 6 to about 15 parts by weight transition metal.Type: GrantFiled: March 26, 1998Date of Patent: September 28, 1999Assignee: Lucent Technologies Inc.Inventor: John Philip Franey
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Patent number: 5849424Abstract: A coated Cu alloy having a high hardness surface which contains intermetallic compounds consisting essentially of Cu and Sn is produced by coating the surface of a Cu alloy with Sn and heat treating the coated Cu alloy to form on the surface thereof a high hardness coating containing Cu--Sn intermetallic compound(s). The coated Cu alloy has improved resistance to abrasion and corrosion and good workability, which permits producing terminal connectors therefrom. The Cu alloy which is coated with Sn consists essentially of 0.01-15 wt % Ni, 0.1-10 wt % Sn, 0.005-0.5 wt % P, and optionally 0.01-40 wt % in total of one or two or more elements selected from the group consisting of Fe, Co, Zn, Ti, Mg, Zr, Ca, Si, Mn, Cd, Al, Pb, Be, Te, In, Ag, B, Y, La, Cr, Ce and Au, with the balance being Cu and incidental impurities.Type: GrantFiled: May 15, 1996Date of Patent: December 15, 1998Assignee: Dowa Mining Co., Ltd.Inventors: Akira Sugawara, Yoshitake Hana
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Patent number: 5817397Abstract: The surface of a lining member 3 is formed with a multiplicity of uneven surfaces 3a. The entire surface of the lining member 3 is coated by an intermediate layer 4 which comprises Ni. The surface of the intermediate layer 4 is additionally coated by an overlay layer 5 which comprises an Sn alloy. The lining member 3 has a surface roughness t.sub.1, as a result of forming the uneven surfaces 3a, which is chosen to be in a range from 2 to 8 .mu.mRz, and a thickness t.sub.2 of the intermediate layer 4 is chosen to be in a range from 0.01 to 0.6 .mu.m. When a sliding bearing 1 is heated, the overlay layer 5 and the intermediate layer 4 chemically react with each other to produce an Sn--Ni compound. As the overlay layer 5 becomes abraded, the Sn--Ni compound 6 will be exposed on the sliding contact surface. However, the described choice prevents the Sn--Ni compound from being exposed across the entire region of the sliding contact surface, thus improving the anti-seizure resistance of the sliding bearing 1.Type: GrantFiled: October 7, 1996Date of Patent: October 6, 1998Assignee: Taiho Kogyo Co., Ltd.Inventors: Soji Kamiya, Yuji Yokota, Yoshio Kumada
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Patent number: 5780172Abstract: An electrical conductor has a copper base substrate coated with a tin base coating layer. To inhibit the diffusion of copper from the substrate into the coating layer and the consequential formation of a brittle tin/copper intermetallic, a barrier layer is interposed between the substrate and the coating layer. This barrier layer contains from 10% to 70%, by weight, of nickel and is preferably predominantly comprised of copper. In one embodiment, an intermetallic layer selected from the group (Cu--Ni).sub.3 Sn, (Cu--Ni).sub.6 Sn.sub.5, Cu.sub.3 Sn, Cu.sub.6 Sn.sub.5 is disposed between the barrier layer and the tin base coating layer.Type: GrantFiled: June 3, 1996Date of Patent: July 14, 1998Assignee: Olin CorporationInventors: Julius C. Fister, Szuchain Chen, Abid A. Khan
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Patent number: 5780173Abstract: The durability and reliability of a polymer layer/metal layer sensor structure is improved by the incorporation of a metal oxide, e.g., tantalum oxide (Ta.sub.2 O.sub.5), layer between the polymer, e.g., polyimide, and the metal, e.g., platinum. sensor element.Type: GrantFiled: September 4, 1996Date of Patent: July 14, 1998Assignee: General Motors CorporationInventors: Charles Robert Harrington, Marie Irene Harrington, Michel Farid Sultan, John Richard Troxell
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Patent number: 5763069Abstract: Electrically conductive tape yarns of two or more layers comprising thermoplastic polymer resin and electrically conductive particles, a process for making such tapes and fabrics comprising such tape yarns are disclosed.Type: GrantFiled: April 28, 1997Date of Patent: June 9, 1998Assignee: Amoco CorporationInventor: Erich Gebhard Jordan
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Patent number: 5756007Abstract: The present invention is a process for protecting articles from electrostatic discharge (ESD) in which a coating is applied directly onto the article in liquid form and the resulting coating provides a surface resistivity that protects the underlying article from ESD. The composition contains a carrier material, carbon black, and a transition metal. The composition forms a coating on an article when applied as a liquid and dried thereon. The ratio of carrier solids to carbon black is about 100 parts by weight polymer to about 0.5 to about 3 parts by weight carbon black. The ratio of carrier solids to transition metal is about 100 parts by weight about 6 to about 15 parts by weight transition metal.Type: GrantFiled: November 16, 1995Date of Patent: May 26, 1998Assignee: Lucent Technologies Inc.Inventor: John Philip Franey