Coating Or Treating A Metal Oxide With A Specified Composition Patents (Class 148/272)
  • Patent number: 10684288
    Abstract: A method of screening or testing a sample is disclosed that comprises ionising a native human hemoglobin sample to generate parent or precursor ions, subjecting the parent or precursor ions to Electron Transfer Dissociation fragmentation so as to generate a plurality of fragment ions, mass analysing the fragment ions and determining whether or not the fragment ions include fragment ions which are indicative of a variant of hemoglobin.
    Type: Grant
    Filed: March 31, 2015
    Date of Patent: June 16, 2020
    Assignee: MICROMASS UK LIMITED
    Inventors: Malcolm Anderson, Jeffery Mark Brown, Jonathan Williams
  • Patent number: 10400337
    Abstract: Disclosed are pretreatment compositions and associated methods for treating metal substrates with pretreatment compositions, including ferrous substrates, such as cold rolled steel and electrogalvanized steel. The pretreatment composition includes: a Group IIIB and/or IVB metal; free fluoride; and lithium. The methods include contacting the metal substrates with the pretreatment composition.
    Type: Grant
    Filed: August 16, 2013
    Date of Patent: September 3, 2019
    Assignee: PPG Industries Ohio, Inc.
    Inventors: Michel Sudour, Aline Wozniak, Philippe Maintier
  • Patent number: 10106905
    Abstract: Provided are an anodic oxide film of an anodic oxide film of an aluminum-based material and a method for performing a sealing treatment on the anodic oxide film which can achieve both high corrosion resistance and high repairing ability. A method may comprise applying direct current electrolysis to an aluminum-based material to form a second anodic oxide film. After which, an AC-DC superimposition electrolysis may be applied to the aluminum-based material to further form a first anodic oxide film. A sealing treatment may then be performed on the first and second anodic oxide films with a solution containing lithium ions.
    Type: Grant
    Filed: February 25, 2015
    Date of Patent: October 23, 2018
    Assignee: Suzuki Motor Corporation
    Inventors: Haruhiko Murakami, Masahiro Fujita
  • Patent number: 9950133
    Abstract: A heat and moisture exchanger includes: a heat and moisture exchanger material formed by coiling a strip-shaped porous body, the porous body having a plurality of slits formed therein that are arranged along the lengthwise direction, into a spirally-wound shape with the slits facing radially outwardly; and a housing that accommodates the heat and moisture exchanger material. Such a structure for an HME makes it possible to reduce pressure loss and improve moisture retention capabilities by means of a relatively simple structure, thereby allowing the inexpensive provision of an HME that lowers the burden on a patient.
    Type: Grant
    Filed: March 8, 2013
    Date of Patent: April 24, 2018
    Assignees: Toray Medical Co., Ltd., Toray Fine Chemicals Co., Ltd.
    Inventors: Tsuguaki Umehara, Hiroyuki Fukuda, Masato Mutoh, Takehiko Hirabara, Yusuke Shobu, Hideyuki Takeshige
  • Patent number: 9689064
    Abstract: The present disclosure relates to a method of incorporating lithium into a coating. One may supply a substrate having a coating containing aluminum ions and immersing the substrate including the coating containing aluminum ions in a water-soluble diketone including lithium for exchange where the ketone carbonyls are separated by at least one carbon atom. This may then be followed by exchanging a portion of the aluminum ions with lithium ions from the diketone solution. Such coatings may have improved chemical resistance.
    Type: Grant
    Filed: June 27, 2013
    Date of Patent: June 27, 2017
    Assignee: The University of New Hampshire
    Inventor: Dale P. Barkey
  • Patent number: 9526169
    Abstract: Disclosed herein are a printed circuit board and a method for manufacturing the same. The printed circuit board includes: a base substrate having a metal pattern for a circuit; and a surface roughness provided on the metal pattern, wherein the surface roughness has a first surface roughness in an anchor structure and a second surface roughness having a black oxide layer in a granular structure formed on the first surface roughness.
    Type: Grant
    Filed: September 9, 2015
    Date of Patent: December 20, 2016
    Assignee: Samsung Electro-Mechanics Co., Ltd.
    Inventors: Hyung Gi Ha, Jae Won Jung, Yong Hwan Kim, Jong Jin Lee, Ja Ho Koo, Young Hwan Shin, Dong Kyu Lee
  • Patent number: 9435036
    Abstract: Metal products having improved properties and processes for preparing the metal products are provided. The present disclosure provides for a metal product comprising a metal surface, an oxide layer and a glass layer. The glass layer is provided by coating a stable aqueous silicate or borosilicate solution onto the metal surface and curing the aqueous solution to produce a glass layer. The metal products have surface characteristics that outperform all anodized metal surfaces.
    Type: Grant
    Filed: March 13, 2015
    Date of Patent: September 6, 2016
    Assignee: MCT Holdings LTD
    Inventors: Hamlin Jennings, Michał Szczȩśniak
  • Patent number: 9139915
    Abstract: A solution for removing an aluminum oxide film from an aluminum or aluminum alloy surface, which includes a salt or oxide of a metal capable of substituting aluminum, a solubilizing agent for ions of the metal, and an alkali, and which has a pH of 10 to 13.5. The removing solution makes it possible to form a film of the metal derived from the metal salt or oxide contained in the removing solution by dissolving away the oxide film from the aluminum or aluminum alloy surface at a low temperature and a high speed while restraining, as securely as possible, erosion of the aluminum or aluminum alloy surface. The removing solution ensures that even in the case where the thickness of the aluminum or aluminum alloy basis material is very small, the aluminum or aluminum alloy surface can be activated while assuredly leaving the aluminum or aluminum alloy basis material.
    Type: Grant
    Filed: July 18, 2011
    Date of Patent: September 22, 2015
    Assignee: C. Uyemura & Co., Ltd.
    Inventors: Hiroki Uchida, Kazuki Yoshikawa, Toshiaki Shibata
  • Publication number: 20130180945
    Abstract: In various embodiments, a method of processing a contact pad may include providing a contact pad, a topmost layer of the contact pad containing aluminum or an aluminum alloy, at least part of the topmost layer of the contact pad being exposed; subjecting the contact pad to a thermally activated atmosphere containing water or reactive components of water.
    Type: Application
    Filed: January 13, 2012
    Publication date: July 18, 2013
    Applicant: Infineon Technologies AG
    Inventors: Marco Koitz, Guenter Zieger, Christian Krenn, Franz Kleinbichler, Guenther Zoth, Karl Mayer
  • Patent number: 8425694
    Abstract: A process for producing a ceramic implant which is structured on the surface at least in the region in contact with bone and/or tissue is described. The process is characterized in that the ceramic implant after shaping and sintering is, in the region to be structured, I. reduced to the corresponding metal on the surface; II. the essentially metallic surface is subsequently subjected to a structuring surface treatment; III. the structure surface is oxidized. Furthermore, implants which have been provided with a topological structure on the surface by means of this process are described.
    Type: Grant
    Filed: December 12, 2008
    Date of Patent: April 23, 2013
    Assignee: Thommen Medical AG
    Inventors: Luis Alfonso Ortega Cruz, Falko Schlottig
  • Publication number: 20120305141
    Abstract: A method for protecting silver and silver alloy surfaces against tarnishing, characterized by initially subjecting the surface to be treated to cleaning pre-treatment in organic solvents; immersing the cleaned surface in an acid solution able to ensure formation of a thin layer of silver oxide; immersing the oxidized surface in a solution of at least one thiol of formula CH3(CH2)nSH where n is between 10 and 16; and chemically reacting the molecules of said thiol with the previously oxidized silver surface, in an environment containing water vapor at a temperature of at least 50° C.
    Type: Application
    Filed: February 23, 2011
    Publication date: December 6, 2012
    Applicant: MESA S.A.S. DI MAILIMPENSA SIMONA E DAVIDE E C.
    Inventor: Dario Narducci
  • Patent number: 8247539
    Abstract: The invention concerns a process for preparing a hybrid organic-inorganic material (HOIM) with phosphorus-containing bridges between the surface of an inorganic substrate containing an element M and one or more organic groups of the covalent M-O-P-R type, said process using, as a precursor for said organic group or groups, at least one organophosphorus acid halide with formula RxP(O)Xy in which x=1 or 2, y=3?x, X being a halogen and R designating at least one organic alkyl, aryl or aryl-alkyl group. Non-exhaustive applications for the hybrid organic-inorganic material obtained by the process of the invention are in the fields of anti-corrosion, lubrication, microelectronics, nanotechnologies, composite materials, heterogeneous catalysis, supported catalysis, depollution and biomedical applications.
    Type: Grant
    Filed: July 6, 2007
    Date of Patent: August 21, 2012
    Assignee: IFP Energies Nouvelles
    Inventors: Renaud Revel, Florence Brodard-Severac, Gilles Guerrero, Hubert Mutin, Alain Forestiere, Alexandra Chaumonnot
  • Patent number: 7585379
    Abstract: A baking finishing formula comprise metallic zinc, metallic nickel, metallic aluminum, polyethylene glycol, a silane, fluoride-containing surfactants, corrosion inhibitors and a mixed-type additive.
    Type: Grant
    Filed: June 14, 2005
    Date of Patent: September 8, 2009
    Inventor: Pao-Nuan Su
  • Patent number: 7465495
    Abstract: Disclosed is a composite black oxide particle which is composed of oxide of cobalt, copper and manganese. The copper/cobalt molar ratio is 0.1-0.5, and the manganese/cobalt molar ratio is 0.2-1.0. The composite black oxide particle further contains silicon, and the silicon content to the total oxide particle is 0.1-3 mass %. The surface of the composite black oxide particle is coated with aluminum oxide. The Al content in the surface coating to the entire particle is 0.05-3 mass %.
    Type: Grant
    Filed: October 14, 2004
    Date of Patent: December 16, 2008
    Assignee: Mitsu Mining & Smelting Co., Ltd.
    Inventors: Shoichi Fujiyasu, Tomio Hayashi, Koichi Katsuyama, Hiroyuki Shimamura
  • Patent number: 7452427
    Abstract: A conversion coating composition for coating a metal substrate is provided which imparts corrosion resistance to the underlying metal substrate. The conversion coating composition comprises an aqueous carrier and first and second rare earth element salts. A complete coating system employing the conversion coating composition is also provided as well as methods for conversion coating a metal substrate with the rare earth element conversion coating compositions of the present invention.
    Type: Grant
    Filed: December 1, 2004
    Date of Patent: November 18, 2008
    Assignee: Deft, Inc.
    Inventor: Eric L. Morris
  • Publication number: 20080210342
    Abstract: Anodic oxidation coatings are selectively removed from anodic oxidation-treated aluminum or aluminum alloy members by immersion in a solution composition. By using a remover composition characterized by containing phosphoric acid and a molybdate salt, it is possible to selectively remove the anodic oxidation coatings from the aluminum or aluminum alloy members without substantially dissolving the basis metal aluminum or aluminum alloy.
    Type: Application
    Filed: January 9, 2008
    Publication date: September 4, 2008
    Inventors: Katsuyuki Iijima, Tetsuo Suzuki
  • Patent number: 7232528
    Abstract: The surface treatment agent for copper and copper alloys contains hydrogen peroxide, a mineral acid, an azole compound, silver ion and a halide ion. The surface treatment agent for copper and copper alloys is useful in the production of printed wiring boards in electronics industry. The surface treatment agent roughens the surface of copper and copper alloys. Particularly, the surface treatment agent can form a uniform and undulation-free roughened surface on copper-clad substrates having plated mirror surface, this having been difficult in conventional techniques, thereby significantly improving the adhesion to etching resists, solder resists, in addition, to prepregs and a resin for mounting electronic parts.
    Type: Grant
    Filed: June 18, 2002
    Date of Patent: June 19, 2007
    Assignee: Mitsubishi Gas Chemical Company, Inc.
    Inventors: Akira Hosomi, Naoki Kogure, Kenichi Moriyama, Kenichi Takahashi, Atsushi Hosoda, Kazuhiko Ikeda
  • Patent number: 7005056
    Abstract: A method for inhibiting corrosion, e.g., pitting corrosion, of alloys is provided. Particularly, the method comprises contacting at least a portion of a surface of the alloy with an aqueous solution comprising a salt of one or more rare earth elements selected from the group consisting of yttrium, gadolinium, cerium, europium, terbium, samarium, neodymium, praseodymium, lanthanum, holmium, ytterbium, dysprosium and erbium; and establishing a voltage differential between an anode comprising the alloy and a cathode in the solution at an effective level and for a sufficient period of time wherein a rare earth element oxide-containing coating is formed on the surface of the alloy to inhibit corrosion thereof.
    Type: Grant
    Filed: October 2, 2001
    Date of Patent: February 28, 2006
    Assignee: The Johns Hopkins University
    Inventors: Rengaswamy Srinivasan, Hassan M. Saffarian, Stuart A. Fogel
  • Patent number: 6991688
    Abstract: A method for forming a zinc oxalate coating on the surface of a strip or sheet of metal covered with a zinc or zinc alloy coating other than zinc/iron coatings, with the aid of an aqueous solution consisting of oxalic acid having a concentration of between 5.10?3 and 0.1 mole/l, and at least one compound and/or ion of an oxidant zinc metal having a concentration of between 10?6 and 10?2 mole/l, and possibly a wetting agent. The inventive method enables sheet metal to be treated at very high speeds without using large amounts of oxidant. It facilitates management of treatment baths. The invention can be used in the lubrication of sheet metal, especially for die stamping.
    Type: Grant
    Filed: January 9, 2001
    Date of Patent: January 31, 2006
    Assignee: Usinor
    Inventors: Jacques Petitjean, Geneviève Klam
  • Patent number: 6899956
    Abstract: This invention includes improvements to a method for forming a chemical conversion coating on ferrous metal substrates, to the chemical solutions used in the coating and to the articles coated thereby. A first oxidation applies a molecular iron/oxygen-enriched intermediate coating, such as a dicarboxylate or phosphate, to a ferrous substrate. A coloring procedure (a second oxidation) follows the first oxidation procedure, using a heated oxidizing solution that reacts with the iron and oxygen enriched intermediate coating to form magnetite (Fe3O4). The result is the formation of a brown or black finish. An appropriate rust preventive topcoat may seal the substrate. The finish affords protection, a degree of lubricity to aid assembly, break-in of sliding surfaces, provides anti-galling protection and an adherent base for paint finishes.
    Type: Grant
    Filed: May 3, 2002
    Date of Patent: May 31, 2005
    Assignee: Birchwood Laboratories, Inc.
    Inventors: William V. Block, Bryce D. Devine
  • Patent number: 6899769
    Abstract: This invention is a method for forming a chemical conversion coating on ferrous metal substrates, the chemical solutions used in the coating and the articles coated thereby. By modifying and combining the features of two existing, but heretofore unrelated, coating technologies, a hybrid conversion coating is formed. Specifically, a molecular iron/oxygen-enriched intermediate coating, such as a dicarboxylate or phosphate, is applied to a ferrous substrate by a first oxidation. The intermediate coating pre-conditions the substrate to form a surface rich in molecular iron and oxygen in a form easily accessible for further reaction. This oxidation procedure is followed by a coloring procedure using a heated (about 120-220 F) oxidizing solution containing alkali metal hydroxide, alkali metal nitrate, alkali metal nitrite or mixtures thereof, which reacts with the iron and oxygen enriched intermediate coating to form magnetite (Fe3O4).
    Type: Grant
    Filed: August 9, 2002
    Date of Patent: May 31, 2005
    Assignee: Birchwood Laboratories, Inc.
    Inventors: Keith N. Ravenscroft, William V. Block
  • Patent number: 6858097
    Abstract: A chromium- and nitrogen-free brightening and passivating treatment for metal surfaces, particularly iron and steel, comprises: at least one acid; at least one substance containing a peroxy moiety; and at least one organic substance selected from the group consisting of; molecules that contain both at least one ether moiety and at least one hydroxyl moiety; molecules that contain at least two ether moieties; and molecules that contain in each molecule both at least one ether moiety and one nitrogen atom that is covalently bonded to at least three carbon atoms. Preferably part of the acid contains phosphorus, which has been found to act synergistically with the organic substance to stabilize peroxy compounds against decomposition, particularly in the presence of metal ions.
    Type: Grant
    Filed: December 21, 2000
    Date of Patent: February 22, 2005
    Assignee: Henkel Kommanditgesellschaft auf Aktien (Henkel KGAA)
    Inventors: Paolo B. Giordani, Valentino Gasparetto, Dario Negri
  • Patent number: 6830622
    Abstract: A corrosion resistant component of semiconductor processing equipment such as a plasma chamber comprises a cerium oxide containing ceramic material as an outermost surface of the component. The cerium oxide containing ceramic material comprises one or more cerium oxides as the single largest constituent thereof. The component can be made entirely of the cerium oxide containing ceramic material or, alternatively, the cerium oxide containing ceramic can be provided as a layer on a substrate such as aluminum or an aluminum alloy, a ceramic material, stainless steel, or a refractory metal. The cerium oxide containing ceramic layer can be provided as a coating by a technique such as plasma spraying. One or more intermediate layers may be provided between the component and the cerium oxide containing ceramic coating.
    Type: Grant
    Filed: March 30, 2001
    Date of Patent: December 14, 2004
    Assignee: Lam Research Corporation
    Inventors: Robert J. O'Donnell, John E. Daugherty
  • Patent number: 6794046
    Abstract: An article made of magnesium or its alloys, some or all of whose surface has a conversion coating, the conversion coating comprising MgO, Mn2O3 and MnO2 plus at least one oxide from the group consisting of vanadium, molybdenum and tungsten; and also a process for producing such an article, and its use.
    Type: Grant
    Filed: September 21, 2001
    Date of Patent: September 21, 2004
    Assignee: AHC Oberflachenechnik GmbH & Co. OHG
    Inventors: Peter Kurze, Ulrike Kruger, Marco Kohler, Dora B{overscore (a)}nerjee
  • Patent number: 6773516
    Abstract: An aqueous acidic solution for forming a rare earth element containing conversion coating on the surface of a metal, said solution being chromate-free and including effective quantities of at least one rare earth element (as herein defined) containing species, an oxidant and at least one accelerator, comprising a metal selected from Groups VA and VIA of the Periodic Table.
    Type: Grant
    Filed: November 20, 2001
    Date of Patent: August 10, 2004
    Assignee: Commonwealth Scientific and Industrial Research Organisation
    Inventors: Simon Gerard Hardin, Klaus Werner Wittel, Anthony Ewart Hughes, Karen Joy Hammon Nelson
  • Patent number: 6755922
    Abstract: An object of the present invention is to provide a high strength Mg based alloy and a Mg based casting alloy having a good fluidity and a good mechanical property, and a molded article using the alloy. A high strength Mg based alloy, which contains, by weight, 12 to 20% of Al, 0.1 to 10% of Zn; 0.1 to 15% of Sn; and 0.05 to 1.5% of Mn.
    Type: Grant
    Filed: December 4, 2000
    Date of Patent: June 29, 2004
    Assignee: Hitachi, Ltd.
    Inventors: Kiyomi Nakamura, Teruo Hirane, Toshio Uchida, Teruyoshi Abe
  • Patent number: 6755917
    Abstract: An aqueous acidic solution for forming a conversion coating on the surface of a metallic material, said solution containing at least one rare earth element (as herein defined) containing species, an accelerator additive selected from the group consisting of metals of Group IB, IIB, IVA, VA, VIA and VIII of the Periodic Table, a peroxidic species and at least one acid selected from the group of mineral acids, carboxylic acids, sulphonic acids and phosphonic acids, wherein said solution contains no more than 20 mg/liter each of fluoride and of phosphate, and the solution is essentially free of chromate.
    Type: Grant
    Filed: November 20, 2001
    Date of Patent: June 29, 2004
    Assignee: Commonwealth Scientific and Industrial Research Organisation
    Inventors: Simon Gerard Hardin, Klaus Werner Wittel, Anthony Ewart Hughes, Karen Joy Hammon Nelson
  • Patent number: 6752878
    Abstract: A method for treating a micro-roughened metal surface to improve bonding between the metal surface and a polymer material. The method involves post-treating the micro-roughened conversion coated metal surface with an aqueous wetting agent composition after having formed the micro-roughened conversion coated metal surface with an adhesion promotion composition. The method can be employed in the circuit board industry to improve bonding between layers in multilayer circuit boards.
    Type: Grant
    Filed: September 19, 2001
    Date of Patent: June 22, 2004
    Assignee: Shipley Company, L.L.C.
    Inventors: Joseph R. Montano, Wade Sonnenberg, Mark J. Kapeckas
  • Patent number: 6740420
    Abstract: A method for improving the electrical conductivity of a substrate of metal, metal alloy or metal oxide comprising depositing a small or minor amount of metal or metals from Group VIIIA metals (Fe, Ru, Os, Co, Rh, Ir, Ni, Pd, Pt) or from Group IA metals (Cu, Ag, Au) on a substrate of metal, metal alloys and/or metal oxide from Group IVA metals (Ti, Zr, Hf), Group VA metals (V, Nb, Ta), Group VIA metals (Cr, Mo, W) and Al, Mn, Ni and Cu and then directing a high energy beam onto the substrate to cause an intermixing of the deposited material with the native oxide of the substrate metal or metal alloy. The native oxide layer is changed from electrically insulating to electrically conductive. The step of depositing can be carried out, for example, by ion beam assisted deposition, electron beam deposition, chemical vapor deposition, physical vapor deposition, plasma assisted, low pressure plasma and plasma spray deposition and the like.
    Type: Grant
    Filed: April 11, 2003
    Date of Patent: May 25, 2004
    Assignee: Wilson Greatbatch Technologies, Inc.
    Inventors: Barry Muffoletto, Ashish Shah, Donald H. Stephenson
  • Patent number: 6669786
    Abstract: Disclosed are processes and compositions of solutions for chromate-replacement coatings for aluminum and aluminum alloys. A preferred method includes forming a boehmite coating layer that includes Al (III) ions on an aluminum surface, and applying an ionic conversion coating solution to the coating layer. The ionic conversion coating solution comprises hexavalent and trivalent ions. The trivalent ions are selected from the group consisting of Ce, Ga, Mn, Sc, Ti, Te and V. The hexavalent ions are selected from the group consisting of Mn, Mo, Se and W. It is contended that the resulting coatings provide corrosion resistance and self-healing effect in any defects present in the coatings.
    Type: Grant
    Filed: May 16, 2001
    Date of Patent: December 30, 2003
    Assignee: Concurrent Technologies Corporation
    Inventor: Krishnaswamy Sampath
  • Patent number: 6632294
    Abstract: Corrosion of steel surfaces in a heat pump is inhibited by adding a rare earth metal salt to the heat pump's ammonia/water working fluid. In preferred embodiments, the rare earth metal salt includes cerium, and the steel surfaces are cerated to enhance the corrosion-inhibiting effects.
    Type: Grant
    Filed: January 31, 2001
    Date of Patent: October 14, 2003
    Assignee: Advanced Mechanical Technology, Inc.
    Inventors: Florian B. Mansfeld, Zhaoli Sun
  • Patent number: 6544353
    Abstract: The invention relates to a method of treating a liquid gallium or gallium alloy surface for prolonged use as a liquid mirror. The method of the invention comprises the steps of (a) contacting the surface of liquid gallium or gallium alloy with an aqueous solution of a halogenic acid to cause dissolution of any gallium oxide present on the surface, thereby obtaining an oxide-free liquid gallium or gallium alloy surface covered with a layer of the acid solution; (b) adding to the acid solution an aqueous solution of a surfactant present in an amount to form a single bimolecular layer of surfactant at an interface between the liquid gallium or gallium alloy and water; and (c) allowing a uniform passivating oxide layer to gradually form on the oxide-free liquid gallium or gallium alloy surface, the passivating oxide layer having surface irregularities smaller than 40 nm.
    Type: Grant
    Filed: November 19, 2001
    Date of Patent: April 8, 2003
    Assignee: Universite Laval
    Inventors: Laurent Bonneviot, Ermanno F. Borra
  • Patent number: 6540843
    Abstract: A method of coating a catalyst layer on a metallic substrate includes preparing a metal oxide and binder slurry to coat onto a metal surface and forming a catalytic layer over the slurry coated surface. The slurry may be made from a binder containing, for example, fully dissolved alumina in the presence of excess nitric acid. The binder may then be mixed with a metal oxide mixture to form the metal oxide-binder slurry. The metal oxide mixture may contain aluminum oxide or partially hydrated aluminum oxide. The metal oxide-binder slurry can be used to coat the surfaces of a variety of metals such as aluminum, titanium, nickel, cobalt, chromium, iron, copper, etc., or their alloys that include brass, as well as stainless steel with or without Al as a component.
    Type: Grant
    Filed: October 20, 2000
    Date of Patent: April 1, 2003
    Assignee: Honeywell International Inc.
    Inventors: Di-Jia Liu, Daniel R. Winstead, Norman Van Den Bussche
  • Patent number: 6508890
    Abstract: The present invention is drawn to a method of lowering the net resistivity of an interconnect by depositing a monomer layer upon an aluminum bonding pad, the treatment thereof to cross link the monomer to form an electrically conductive polymer, and simultaneously, the substantial reduction of alumina, Al2O3, to metallic aluminum. In the method of the present invention, deposition of a monomer layer in a solvent, volatilization of the solvent, and contact with a strong oxidizer such as a potassium permanganate allows for the use of the strong oxidizer without the hindrance of having to deal with a manganese oxide husk on the surface of the aluminum bonding pad. Preferably, the chemical qualities of the monomer will include the tendency to be a reducing agent to the native oxide film of the bonding pad. By selecting a monomer that tends to reduce rather than to oxidize, the problem of thickening the native oxide film is avoided.
    Type: Grant
    Filed: August 31, 2000
    Date of Patent: January 21, 2003
    Assignee: Micron Technology, Inc.
    Inventors: Tongbi Jiang, Li Li
  • Patent number: 6508891
    Abstract: The method of manufacturing a hydrogen-absorbing alloy electrode according to this invention comprises the steps of: dissolving a particle surface of said hydrogen-absorbing alloy by a surface-treatment solution; and washing the hydrogen-absorbing alloy with the particle surface dissolved using an alkaline solution at a temperature of 30° C.˜40° C. The metal ions dissolved by the surface-treatment solution can be completely washed away by the alkaline solution so that they will not be precipitated onto the surface of the hydrogen-absorbing alloy again as the hydroxide.
    Type: Grant
    Filed: February 6, 2001
    Date of Patent: January 21, 2003
    Assignee: Sanyo Electric Co., Ltd.
    Inventors: Tadashi Ise, Tetsuyuki Murata, Yohei Hirota, Teruhiko Imoto, Koji Miki
  • Patent number: 6506263
    Abstract: An aqueous composition for sealing anodically oxidized aluminum surfaces is described. The composition contains at least one surfactant, a magnesium salt, and a cobalt(II) salt. This composition demonstrates enhanced sealant properties. A method for sealing anodically oxidized aluminum surfaces is also described. In this method, the aluminum is contacted with a composition containing at least one surfactant, a magnesium salt and a cobalt(II) salt.
    Type: Grant
    Filed: November 17, 2000
    Date of Patent: January 14, 2003
    Assignee: Houghton Metal Finishing Company
    Inventors: Mores Basaly, Dana Rothwell
  • Patent number: 6503343
    Abstract: A direct displacement plating process provides a uniform, adherent coating of a relatively stable metal (e.g., nickel) on a highly reactive metal (e.g., aluminum) that is normally covered with a recalcitrant oxide layer. The displacement reaction proceeds, preferably in a nonaqueous solvent, as the oxide layer is dissolved by a fluoride activator. Halide anions are used to provide high solubility, to serve as an anhydrous source of stable metal ions, and to control the rate of the displacement reaction. A low concentration of activator species and little or no solution agitation are used to cause depletion of the activator species within pores in the surface oxide so that attack of the reactive metal substrate is minimized. Used in conjunction with electroless nickel deposition to thicken the displacement coating, this process can be used to render aluminum pads on IC chips solderable without the need for expensive masks and vacuum deposition operations.
    Type: Grant
    Filed: September 11, 2000
    Date of Patent: January 7, 2003
    Assignee: Innovative Technology Licensing, LLC
    Inventors: D. Morgan Tench, Leslie F. Warren, Jr., John T. White
  • Patent number: 6488782
    Abstract: Method for reducing in situ the electrochemical corrosion potential and susceptibility to stress corrosion cracking of a nickel-base alloy and boiling water nuclear reactor components formed therefrom when in contact with high temperature water. The method comprises the steps of: adding a metal hydride to the high temperature water; dissociating the metal hydride in the high temperature water to form a metal and at least one hydrogen ion; and reducing the concentration of the oxidizing species by reacting the hydrogen ions with an oxidizing species, thereby reducing in situ the electrochemical corrosion potential of the nickel-base alloy. The method may further include the steps of reacting the metal with oxygen present in the high temperature water to form an insoluble oxide and incorporating the metal into the surface of the nickel-base alloy, thereby reducing the electrical conductivity of the surface of the nickel-base alloy.
    Type: Grant
    Filed: January 29, 2001
    Date of Patent: December 3, 2002
    Assignee: General Electric Company
    Inventors: Young Jin Kim, Peter Louis Andresen
  • Patent number: 6475310
    Abstract: A method for producing oxidation-resistant austenitic alloys for use at temperatures below 800° C. comprising of: providing an alloy comprising, by weight %: 14-18% chromium, 15-18% nickel, 1-3% manganese, 1-2% molybdenum, 2-4% silicon, 0% aluminum and the balance being iron; heating the alloy to 800° C. for between 175-250 hours prior to use in order to form a continuous silicon oxide film and another oxide film. The method provides a means of producing stainless steels with superior oxidation resistance at temperatures above 700° C.
    Type: Grant
    Filed: October 10, 2000
    Date of Patent: November 5, 2002
    Assignee: The United States of America as represented by the United States Department of Energy
    Inventors: John S. Dunning, David E. Alman
  • Patent number: 6475301
    Abstract: The invention is a method of forming a conversion coating on an aluminum surface. According to the method, the aluminum surface is conversion coated by first treating the surface with thermal degreasing or aqueous alkaline degreasing and then contacting the treated surface with an aqueous bath solution of KF. The concentration of KF in the solution is 2.0-25.0 wt. % and the temperature is 90-212° F. for at least 5 seconds.
    Type: Grant
    Filed: May 8, 2000
    Date of Patent: November 5, 2002
    Assignee: Visteon Global Technologies, Inc.
    Inventors: Gerald Adam Grab, Kimberly A. Lazarz, Matthew John Zaluzec, Timothy Van Evans
  • Patent number: 6447665
    Abstract: Anodized aluminum surfaces are advantageously sealed by an energy- and time-saving two step process, in which the first step is contact at not more than 75° C. with a solution containing lithium and fluoride ions and, optionally, surfactant. The second necessary step is treatment with hot water or steam, which may be completed in considerably less time when only hot water or steam is used for sealing. Conventional smut inhibitors and/or neutral buffers as used in hot water for single step sealing may advantageously be included in the second step of this process. 100-1000 ppm concentrations of nickel and/or cobalt ions in the treatment liquid for the second treatment step, if environmentally tolerable, make it possible to complete this step in as little as 10 minutes at a temperature as low as 88° C.
    Type: Grant
    Filed: May 17, 2000
    Date of Patent: September 10, 2002
    Assignee: Henkel Corporation
    Inventors: Philip M. Johnson, Lawrence R. Carlson, Scott A Wojciechowski
  • Patent number: 6432224
    Abstract: A conversion coating solution and process forms a stable and corrosion-resistant layer on metal substrates or layers or, more preferably, on a boehmite layer or other base conversion coating. The conversion coating process involves contacting the substrate, layer or coating with an aqueous alkali metal isomolybdate solution in order to convert the surface of the substrate, layer or coating to a stable conversion coating. The aqueous alkali metal molybdates are selected from sodium molybdate (Na2MoO4), lithium molybdate (Li2MoO4), potassium molybdate (K2MoO4), or combinations thereof, with the most preferred alkali metal molybdate being sodium molybdate. The concentration of alkali metal molybdates in the solution is preferably less than 5% by weight.
    Type: Grant
    Filed: February 8, 2000
    Date of Patent: August 13, 2002
    Assignee: Lynntech, Inc.
    Inventors: Zoran Minevski, Jason Maxey, Carl Nelson, Cahit Eylem
  • Patent number: 6406562
    Abstract: There is provided a method for treating the surface of metals such as nickel based or high alloy steels, austenitic and ferritic stainless steels, copper and aluminum alloys to increase their corrosion resistance by modification of the metal surfaces to inhibit cathodic corrosion processes. In a single step treatment process the metals are immersed into a heated aqueous composition containing a rare earth salt substantially free of any halide compound. Increased corrosion resistance is obtained using nitrates of yttrium, gadolinium, cerium, europium, terbium, samarium, neodymium, praseodymium, lanthanum, holmium, ytterbium, dysprosium, and erbium nitrates. The rare earth salt is present in the range from about 2% by weight to saturation of the solution. The composition includes a pH-modifying substance such as nitric acid to adjust the pH in the range 0.5 to about 6.5 to attack the surface to remove oxides facilitating deposition of the rare earth.
    Type: Grant
    Filed: May 16, 2000
    Date of Patent: June 18, 2002
    Assignee: McMaster University
    Inventors: Yucheng Lu, Michael Brian Ives
  • Patent number: 6383272
    Abstract: A composition and process are described which are useful in treating metal surfaces, which composition comprises an oxidizer, an acid, a corrosion inhibitor, an organic nitro compound and, optionally, a benzotriazole with an electron withdrawing group in the 1-position which electron withdrawing group is a stronger electron withdrawer than a hydrogen group, optionally, a source of adhesion enhancing species selected from the group consisting of molybdates, tungstates, tantalates, niobates, vanadates, isopoly or heteropoly acids of molybdenum, tungsten, tantalum, niobium, vanadium, and combinations of any of the foregoing and optionally but preferably a source of halide ions. The composition and process are useful in increasing the adhesion of metal surfaces to polymeric substances and in preserving said adhesion through temperature variation.
    Type: Grant
    Filed: June 8, 2000
    Date of Patent: May 7, 2002
    Inventor: Donald Ferrier
  • Patent number: 6383254
    Abstract: There are provided a treatment solution for reducing a copper oxide formed on the surface of copper to copper, wherein dimethylamine borane is contained in an amount of 0.3 to 2.0 g/L and the relationship y≧0.232x−0.185 holds between the concentration y (g/L) of dimethylamine borane and an area x (dm2/L) to be treated per unit solution amount, and a treatment method for reducing a copper oxide formed on the surface of a copper material to copper by dipping the copper material in the treatment solution as described above, wherein the addition of dimethylamine borane to water is carried out within 10 minutes before the dipping of the copper material or after the dipping of the copper material.
    Type: Grant
    Filed: July 2, 2001
    Date of Patent: May 7, 2002
    Assignee: Meltex Inc.
    Inventors: Yasuji Fujita, Kenji Ikeshima
  • Patent number: 6322656
    Abstract: An improvement in a method of bonding copper and a resin together wherein a copper oxide layer is formed on the surface of copper by the oxidation of metallic copper, the copper oxide layer is reduced to metallic copper with an aqueous reducing solution containing at least one amine borane represented by the general formula: BH3NHRR′ (wherein R and R′ are each a member selected from the group consisting of H, CH3, and CH2CH3), and the metallic copper is bonded to a resin. According to the improvement, a reducing stabilizer is added to the reducing solution in an amount sufficient to decrease consumption of the amine borane during reduction to a level less than that consumed in the absence of the reducing stabilizer during the course of the copper oxide reduction process, wherein the stabilized reduction process is initiated in a reasonable time and the metallic copper layer resulting from the stabilized reduction process is resistant to acid attack.
    Type: Grant
    Filed: December 19, 1995
    Date of Patent: November 27, 2001
    Assignee: Morton International, Inc.
    Inventors: John Fakler, Michael Rush, Scott Campbell
  • Patent number: 6316057
    Abstract: Metal surfaces, metal-oxide surfaces, metal-salt surfaces, silicon-comprising surfaces and/or high-molecular-weight aquoxide-comprising organic surfaces are coated. The coating is carried out with a reagent having a reactive group chosen from Si—H, Sn—H, and Ge—H. The reagent is applied in liquid, pasty, or solid form to the surface that is to be coated. Furthermore, the coating reaction requires the presence of an activator. A platinum metal in form of a compound or in metallic form is used as activator.
    Type: Grant
    Filed: October 29, 1999
    Date of Patent: November 13, 2001
    Assignee: Global Surface Aktiengesellschaft
    Inventors: Martina Hirayama, Walter R. Caseri, Ulrich W. Suter
  • Patent number: 6312821
    Abstract: 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: Grant
    Filed: August 30, 2000
    Date of Patent: November 6, 2001
    Assignee: Honda Giken Kogyo Kabushiki Kaisha
    Inventors: Norimasa Takasaki, Hiroyuki Murata, Yoshiyuki Matsuda, Morihiro Takemura
  • Patent number: 6309476
    Abstract: This invention is a method for forming a chemical conversion coating on ferrous metal substrates, the chemical solutions used in the coating and the articles coated thereby. By modifying and combining the features of two existing, but heretofore unrelated, coating technologies, a hybrid conversion coating is formed. Specifically, a molecular iron/oxygen-enriched intermediate coating, such as a dicarboxylate or phosphate, is applied to a ferrous substrate by a first oxidation. The intermediate coating pre-conditions the substrate to form a surface rich in molecular iron and oxygen in a form easily accessible for further reaction. This oxidation procedure is followed by a coloring procedure using a heated (about 120-220° F.) oxidizing solution containing alkali metal hydroxide, alkali metal nitrate, alkali metal nitrite or mixtures thereof, which reacts with the iron and oxygen enriched intermediate coating to form magnetite (Fe3O4).
    Type: Grant
    Filed: May 24, 1999
    Date of Patent: October 30, 2001
    Assignee: Birchwood Laboratories, Inc.
    Inventors: Keith N. Ravenscroft, William V. Block
  • Patent number: 6294220
    Abstract: A post-treatment method for copper on printed circuit boards is disclosed. The method comprises forming a cupric-based organometallic conversion coating on a copper surface of a printed circuit board, and then converting the cupric-based organometallic conversion coating to a cuprous-based organometallic conversion coating. The resulting cuprous-based organometallic conversion coating is desirable in that it improves copper to dielectric bond integrity.
    Type: Grant
    Filed: June 30, 1999
    Date of Patent: September 25, 2001
    Assignee: Alpha Metals, Inc.
    Inventors: Peter T. McGrath, Abayomi Owei, Saeed Sardar, Eric Yakobson