Patents Examined by Andrew L. Oltman
  • Phosphating method accelerated by N-oxides
    Patent number: 6379474
    Abstract: An acidic aqueous phosphating solution is presented having 0.2 to 3 g/l of zinc ions, 3 to 50 g/l of phosphate ions expressed as PO4−3, and 0.05 to 4 g/l of an organic N-oxide containing a saturated, unsaturated or aromatic 5- or 6-membered ring system, where the N atom of the N-oxide is part of said ring system, and where the ratio by weight of phosphate ions to zinc ions is from 3.7 to 30:1. The solution is free of hydroxylamine and useful in phosphating metal surfaces.
    Type: Grant
    Filed: January 10, 2001
    Date of Patent: April 30, 2002
    Assignee: Henkel Kommanditgesellschaft auf Aktien
    Inventors: Bernd Mayer, Peter Kuhm, Pietro Balboni, Markus Senner, Horst-Dieter Speckmann, Juergen Geke, Jan-Willem Brouwer, Annette Willer
  • Method for replenishing baths
    Patent number: 6372055
    Abstract: Disclosed are methods for replenishing adhesion promoting baths from an unstable state without discarding the bath. Methods of adhesion promoting substrates, such as printed wiring boards, using the replenished baths are also disclosed.
    Type: Grant
    Filed: February 23, 2000
    Date of Patent: April 16, 2002
    Assignee: Shipley Company, L.L.C.
    Inventors: Joseph R. Montano, Kimberly B. Wynja, Edward C. Couble, Martin W. Bayes
  • Grain-oriented electrical steel sheets having excellent magnetic characteristics, its manufacturing method and its manufacturing device
    Patent number: 6368424
    Abstract: A grain-oriented electrical steel sheet with improved magnetic properties is achieved by a reduced 180° C. magnetic wall spacing with pulse laser light irradiation. The rolling direction width of the periodic closure domain generated by laser irradiation is no greater than 150 &mgr;m. The depth of the periodic closure domain in the direction of the steel sheet thickness is at least 30 &mgr;m. The product of the length of the periodic closure domain in the rolling direction width direction multiplied by the length of the depth of the periodic closure domain in the direction of the steel sheet thickness is at least 4500 &mgr;m2. The magnetostriction with materials of 0.23 mm sheet thickness (&lgr;19 p-p compression) is no greater than 0.9×10−6, and magnetostriction with materials of 0.27 mm sheet thickness (&lgr;19 p-p compression) is no greater than 1.3×10−6.
    Type: Grant
    Filed: August 20, 1998
    Date of Patent: April 9, 2002
    Assignee: Nippon Steel Corporation
    Inventors: Tatsuhiko Sakai, Naoya Hamada, Katsuhiro Minamida, Kimihiko Sugiyama, Akira Sakaida, Hisashi Mogi
  • Method for manufacturing acoustic vibration plate
    Patent number: 6364966
    Abstract: A method for manufacturing an acoustic vibration plate includes molding titanium metal into a shape of an acoustic vibration plate in order to obtain a titanium vibration plate, and performing a heat treatment on the titanium vibration plate by a ceramic-formation step, thereby to change entirely the titanium vibration plate into titanium oxide.
    Type: Grant
    Filed: November 15, 2000
    Date of Patent: April 2, 2002
    Assignee: Sony Corporation
    Inventors: Yoshio Ohashi, Masaru Uryu
  • Method for phosphatizing iron and steel
    Patent number: 6361623
    Abstract: A high quality lubricant carrier for lubrication in cold plastic working of iron and steel is provided by a process in which the surfaces of objects to be worked are first treated with a surface conditioning liquid composition that contains dispersed fine particles of at least one of a Jernstedt salt, zinc phosphate, zinc calcium phosphate, and calcium phosphate, and is then treated by a phosphatizing solution that contains calcium cations.
    Type: Grant
    Filed: December 13, 1999
    Date of Patent: March 26, 2002
    Assignee: Henkel Corporation
    Inventors: Kazuhiro Ishikura, Manabu Kumagaya, Takaomi Nakayama
  • Method for renewing diffusion coatings on superalloy substrates
    Patent number: 6355116
    Abstract: A method for controlled removal of a portion of a diffusion coating from the outer surface of a nickel-containing superalloy article. A diffusion coating typically includes a diffusion layer between an outer aluminide layer and the nickel-containing substrate. The method includes contacting the coated superalloy article in a preselected chemical stripping solution for a preselected period of time sufficient to remove only the outer aluminide layer, without substantially affecting the diffusion layer underlying the outer aluminide layer. After neutralizing the stripping solution, the article can be inspected and repaired as needed. The aluminide outer layer can then be restored in a conventional manner.
    Type: Grant
    Filed: March 24, 2000
    Date of Patent: March 12, 2002
    Assignee: General Electric Company
    Inventors: Keng Nam Chen, Shih Tung Ngiam
  • High permeability metal glassy alloy for high frequencies
    Patent number: 6350323
    Abstract: A high permeability metal glassy alloy for high frequencies contains at least one element of Fe, Co, and Ni as a main component, at least one element of Zr, Nb, Ta, Hf, Mo, Ti, V, Cr, and W, and B. In the metal glassy alloy, the temperature interval &Dgr;Tx of a super cooled liquid region, which is represented by the equation &Dgr;Tx=Tx−Tg (wherein Tx represents the crystallization temperature, and Tg represents the glass transition temperature) is 20° C. or more, and resistivity is 200 &mgr;&OHgr;·cm or more.
    Type: Grant
    Filed: September 2, 1999
    Date of Patent: February 26, 2002
    Assignees: Alps Electronic Co., Ltd.
    Inventors: Akihisa Inoue, Tao Zhang
  • Rolling bearing
    Patent number: 6342109
    Abstract: As a steel material for an inner race, an outer race and a rolling element constituting a rolling bearing, there is used one containing carbon (C) and chromium (Cr) in an amount of 0.65 wt % to 1.10 wt % and 2.0 wt % to 6.0 wt %, respectively. At least one of the inner race, the outer race and the rolling element is formed from the steel material. The inner race, outer race and the rolling element thus formed is then subjected to hardening, tempering and polishing. Further, a chromium oxide layer (Cr2O3) having a thickness of 5 nm to 300 nm is formed on a race track surface of at least one of the inner race, the outer race and the rolling element. If the rolling bearing is used in operation under the lubrication at a high traction coefficient with water mixed therein, finely particulate molybdenum carbide and/or vanadium carbide having a particle diameter of 50 nm to 300 nm is distributed in the matrix.
    Type: Grant
    Filed: October 19, 1999
    Date of Patent: January 29, 2002
    Assignee: NSK, Ltd.
    Inventors: Hiromichi Takemura, Kazuo Sekino, Shigeru Okita, Yasuo Murakami
  • Oxidation protective coating for Mo-Si-B alloys
    Patent number: 6340398
    Abstract: A method for enhancing the oxidation resistance of substrates fabricated from metallic molybdenum and alloys containing at least 50% molybdenum which comprises depositing silicon on the surface of the substrate under conditions which cause the formation of an outer layer of MoSi2. Also disclosed is a method for enhancing the oxidation resistance of other substrates, such as carbon-carbon and metals and alloys which show minimal reaction with molybdenum under the coating conditions, which comprises depositing a layer of molybdenum on the surface, then depositing silicon on the molybdenum layer under conditions which cause the formation of an outer layer of MoSi2.
    Type: Grant
    Filed: April 4, 2000
    Date of Patent: January 22, 2002
    Assignee: The United States of America as represented by the Secretary of the Air Force
    Inventors: Triplicane A. Parthasarathy, Madan G. Mendiratta, Dennis M. Dimiduk
  • Method of controlling thickness and aluminum content of a diffusion aluminide coating
    Patent number: 6334907
    Abstract: A process for forming a diffusion aluminide coating on a substrate, such as a component for a gas turbine engine. The process generally entails placing the substrate in a suitable coating chamber, flowing an inert or reducing gas into and through the coating chamber, and then aluminizing the substrate using an aluminizing technique with a substantially constant aluminum activity, such as a vapor phase deposition process. During the aluminizing process, the amount of unreacted aluminum within the coating chamber is controlled by altering the flow rate of the gas through the coating chamber so that a portion of the unreacted aluminum is swept from the coating chamber by the gas. The amount of unreacted aluminum swept from the coating chamber is regulated by metering the gas flow rate in order to control the aluminizing rate and aluminum content of the resulting aluminide coating.
    Type: Grant
    Filed: October 13, 1999
    Date of Patent: January 1, 2002
    Assignee: General Electric Company
    Inventors: Nripendra N. Das, Thomas E. Mantkowski, Jeffrey A. Conner
  • High temperature superconducting tape and method of manufacture
    Patent number: 6329325
    Abstract: Highly oriented HgBa2Ca2Cu3O8+&dgr; on Ni-tapes with a buffer layer of Cr/Ag or Cr/(Ag—Pd) have been described with a high transition temperature are described along with, one and two step methods of manufacture.
    Type: Grant
    Filed: July 9, 1998
    Date of Patent: December 11, 2001
    Assignee: University of Houston
    Inventors: Ching-Wu Chu, Ruling L. Meng, Yu-Yi Xue
  • Rare earth metal-based permanent magnet, and process for producing the same
    Patent number: 6326087
    Abstract: A rare earth metal-based permanent magnet has a metal oxide film formed on the surface thereof by a sol-gel coating process. The rare earth metal-based permanent magnet is produced by forming a metal oxide film on the surface thereof by a sol-gel coating process. The metal oxide film is thin and dense. The adhesion of the film to the surface of the magnet is excellent. The film exhibits an excellent corrosion resistance. Typical examples of the metal oxide films are Al, Si, Ti and Zr oxide films. An interfacial layer with an R (rare earth element) atom chemically bonded with a film forming metal atom through an oxygen atom is formed between the metal oxide film and the entire surface of the magnet.
    Type: Grant
    Filed: December 15, 1999
    Date of Patent: December 4, 2001
    Assignee: Sumitomo Special Metals Co., Ltd.
    Inventors: Takeshi Nishiuchi, Fumiaki Kikui
  • Method of artificially forming patina on copper
    Patent number: 6322636
    Abstract: A method of artificially forming patina on a copper product surface comprising the steps of blowing granular sodium hydrogen carbonate powder onto the copper product surface to clean and roughen it; wetting the surface with water; and depositing granular sodium hydrogen carbonate powder onto the wet copper surface; thereby forming patina on the copper surface. The step of wetting the copper surface and the step of depositing granular sodium hydrogen carbonate powder onto the wet copper surface are preferably repeated several times. The copper surface is preferably covered with porous sheets during or after the above steps.
    Type: Grant
    Filed: June 30, 2000
    Date of Patent: November 27, 2001
    Assignee: The Hiraoka Environmental Science Laboratory
    Inventor: Yutaka Matsugu
  • Sliding member
    Patent number: 6315840
    Abstract: An object of the present invention is to provide a sliding member which is coated a film having superior wear resistance, superior scuffing resistance and a superior property not to increase an amount of wear on an opponent material (an opponent attacking property). This object can be achieved by providing a sliding member coated by a Cr—B—N alloy film 4 on an outer surface 3 thereof. In this case, it is preferable that the Cr—B—N alloy film is formed through a physical vapor deposition, particularly ion plating, vacuum deposition, or sputtering. Further, it is preferable that the boron (B) content is within the range of 0.05-20 wt.%.
    Type: Grant
    Filed: June 14, 1999
    Date of Patent: November 13, 2001
    Assignee: Nippon Piston Ring Co., Ltd.
    Inventors: Motonobu Onoda, Katsuaki Ogawa, Keiichi Kanemitsu
  • Non-chromium pretreatment chemicals
    Patent number: 6309477
    Abstract: The present invention is relates to pretreatment chemicals metal materials to be painted containing at least one kind of sulfur-containing compounds and at least one of phosphorus ion-containing compounds, and an anticorrosive treatment of metal materials, by the pretreatment chemicals.
    Type: Grant
    Filed: August 13, 1999
    Date of Patent: October 30, 2001
    Assignee: Nippon Paint Co., Ltd.
    Inventors: Toshiaki Shimakura, Yutaka Wada, Takayuki Fukuoka
  • Spindle-shaped goethite particles, spindle-shaped hematite particles and magnetic spindle-shaped metal particles containing iron as main component
    Patent number: 6309479
    Abstract: Spindle-shaped metal particles and a process for producing magnetic spindle-shaped metal particle containing iron as a main component, which contains cobalt of 8 to 45 atm % calculated as Co, aluminum of 5 to 20 atm %, calculated as Al, and a rare earth element of 1 to 15 atm %, calculated as rare earth element, wherein the particles have an average major axial diameter of 0.05 to 0.15 &mgr;m, an average minor axial diameter of 0.010 to 0.022 &mgr;m, an aspect ratio of 4:1 to 8:1, a particle size distribution of not more than 0.20, and an X-ray crystallite size D110 of 12.0 to 17.0 nm. The spindle-shaped metal particles have a high coercive force, an excellent particle coercive force distribution, a large saturation magnetization and an excellent oxidation stability, and are excellent in a squareness (Br/Bm) of the sheet due to a good dispersibility in a binder resin.
    Type: Grant
    Filed: March 2, 1999
    Date of Patent: October 30, 2001
    Assignee: Toda Kogyo Corporation
    Inventors: Kenji Okinaka, Masaaki Maekawa
  • Aqueous gel compositions and use thereof
    Patent number: 6309478
    Abstract: The disclosure relates to aqueous-based gels and, in some cases, usage of such gels to impart corrosion resistance to steel and/or zinc containing surfaces, e.g., galvanized steel. The gel comprises water, at least one thickener, at least one silica containing material and an optional surfactant.
    Type: Grant
    Filed: September 10, 1999
    Date of Patent: October 30, 2001
    Assignee: Elisha Technologies Co LLC
    Inventors: Nancy M. McGowan, John Hahn
  • Process for surface-treating an aluminum-containing metal
    Patent number: 6306226
    Abstract: An aluminum-containing metal material for, for example, a heat-exchanger for motorcars is surface-treated by chemically etching an Al-containing metal material surface, forming a first protective layer on the etched surface by a chemical conversion treatment with an aqueous solution of Zr phosphate or Ti phosphate, and coating the first protective layer with a second protective layer containing a hydrophilic resin including non-cross-linked hydrophilic functional groups and at least partially cross-linked reactive functional groups different from the hydrophilic functional groups, to impart high hydrophilicity and resistance to odor generation and corrosion to the aluminum-containing metal material surface.
    Type: Grant
    Filed: October 23, 1998
    Date of Patent: October 23, 2001
    Assignees: Nihon Papkerizing Co., Ltd., Denso Corporation
    Inventors: Yasuo Iino, Hiroki Kojima, Tomohiro Ohsako, Hiroyoshi Sugawara, Kengo Kobayashi
  • Method of making a target
    Patent number: 6302977
    Abstract: Described is a titanium sputtering target to provide improved step coverage and a method of making same.
    Type: Grant
    Filed: August 2, 1999
    Date of Patent: October 16, 2001
    Assignee: Johnson Matthey Electronics, Inc.
    Inventor: Yinshi Liu
  • Coated piston and surface-treating film
    Patent number: 6303232
    Abstract: This invention relates to a surface treatment method comprising the steps of soaking aluminum or an aluminum alloy in a treating solution containing a fluorine compound and ammonium silicofluoride, and treating the aluminum or aluminum alloy in the treating solution at a temperature in the range of 70 to 100° C.; a piston having undergone such a surface treatment; and a piston coated with a film consisting of an Al-OH-F compound, as well as a sliding member in which its sliding surface and the like are coated with a slide film consisting, for example, of a compound of aluminum, fluorine and the hydroxyl group; and a surface-treating film for an aluminum alloy which is formed on a surface of aluminum or an aluminum alloy and consists of an aluminum fluoride hydroxide compound and silicon particles dispersed therein.
    Type: Grant
    Filed: October 9, 1998
    Date of Patent: October 16, 2001
    Assignee: Suzuki Motor Corporation
    Inventors: Makoto Mihoya, Masaya Nomura, Shigehi Mitsuoka