Patents Examined by W. T. Leader
  • Patent number: 4502933
    Abstract: A method and apparatus for electrolytic treatment to a metal web includes transporting the metal web between pairs of electrolytic-plates which are immersed in an electrolyzer. A plurality of insulating members extends from upper surface or bottom of the electrolyzer along a widthwise direction of the metal web, and the insulating members function to interrupt a flow of the electrolyte which is circulated in the electrolyzer which increases the agitation rate of the electrolyte in the vicinity of the surfaces of the metal web.
    Type: Grant
    Filed: December 7, 1982
    Date of Patent: March 5, 1985
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Teruo Mori, Hiroshi Shirai, Tsutomu Kakei, Tsuneyasu Matsuhisa, Masaru Watanabe
  • Patent number: 4484988
    Abstract: This disclosure is concerned with providing metallic articles, such as cutting and drilling tools, gears, bearings and other structures subject to wear in use, with wear-resisting coatings adhered at desired surfaces thereof, preferably in the form of a thin, generally fractional mil, nickel-boron porous deposit within the voids and over the surface of which a molten mixture of soft metal and organic plastic material of low friction coefficient has been adhered. Improved properties are imparted by cryogenic treatment.
    Type: Grant
    Filed: December 9, 1981
    Date of Patent: November 27, 1984
    Assignee: Richmond Metal Finishers, Inc.
    Inventor: W. W. Robinson
  • Patent number: 4470900
    Abstract: The precipitation and removal of particulate solids from coal-derived liquids by adding a process-derived anti-solvent liquid fraction and continuing the precipitation process at a temperature above the melting point of the mixed liquids for sufficient time to allow the asphaltenes to polymerize and solids to settle at atmospheric pressure conditions. The resulting clarified light hydrocarbon overflow liquid contains less than about 0.02 W % ash and is suitable as turbine fuel or as boiler fuel for burning without particulate emission control equipment. An underflow liquid fraction containing less than about 0.1 W % solids along with low sulfur and nitrogen concentrations is suitable as a boiler fuel with emission control equipment.
    Type: Grant
    Filed: May 12, 1980
    Date of Patent: September 11, 1984
    Assignee: HRI, Inc.
    Inventor: Paul H. Kydd
  • Patent number: 4470884
    Abstract: A high speed aluminum wire anodizing machine and process are provided which includes anodizing aluminum wire in an anodizer tank having wire ingress and egress openings. At least two adjacent rotatable wire accumulator drums are provided in the tank, preferably with means for producing a flow of anodizing electrolytes into each of the drums through an end hub thereof and out of the sidewalls of the drums passed circumferential wire separators. An anode is located proximal to the wire ingress opening, preferably in a contact cell which has an adjustable wire egress window. At least one cathode is provided in the tank. The cathode is preferably either between the drums or a pair of cathodes are provided above and below the drums adjacent to the sidwalls thereof, or both.
    Type: Grant
    Filed: August 7, 1981
    Date of Patent: September 11, 1984
    Assignee: National Ano-Wire, Inc.
    Inventor: Daniel Carr
  • Patent number: 4469572
    Abstract: The present invention discloses a method of continuously processing a ribbonlike material. The method is characterized by comprising a preliminary polishing step in which surface defects of a material pulled out from an uncoiler are removed and the surface of the material is semi-finished by abrasion in combination with electrolytic polishing, a final polishing step in which the surface of the material is mirror-finished by abrasion in combination with electrolytic polishing, a washing and drying step in which the material is washed and dried with extraneous matter on the surface of the material washingly removed, a surface inspection step in which the thus finished surface of the material is inspected as to surface roughness and defects, a surface protection step in which a protective film is applied to the finished surface of the material, and a press step in which the material is cut into a predetermined size.
    Type: Grant
    Filed: March 9, 1981
    Date of Patent: September 4, 1984
    Assignee: Hitachi Shipbuilding & Engineering Co., Ltd.
    Inventors: Yasuo Kimoto, Masahiko Yamamoto, Katsunori Tamiya, Yoshihito Sakai, Akio Komura, Shoichi Honda, Hidehiko Maehata, Hiroshi Kamada, Tomohiko Suzaki, Tomoya Inoue
  • Patent number: 4465562
    Abstract: A process for the surface treatment of an aluminum article characterized by dipping an aluminum article which has been anodically oxidized and which has a surface structure in an active state into a polymer latex thereby forming a water-insoluble polymer coating layer on the surface of said aluminum article, said polymer latex being prepared by polymerizing one or more of ethylenically unsaturated monomers in such a manner that polymer particles of said polymer latex are negatively charged and said polymer latex being adjusted to a pH value below 3.0.
    Type: Grant
    Filed: February 9, 1982
    Date of Patent: August 14, 1984
    Assignee: Honny Chemicals Company, Limited
    Inventor: Tsuneo Kadooda
  • Patent number: 4465742
    Abstract: Gold-plated electronic components are disclosed, as well as a process for producing the same, wherein an alloy of nickel and cobalt or an alloy containing these elements as essential ingredients is used as an undercoat for the gold-plated layer.
    Type: Grant
    Filed: January 29, 1982
    Date of Patent: August 14, 1984
    Assignee: NGK Spark Plug Co., Ltd.
    Inventors: Teruyoshi Nagashima, Akio Takami, Akiyo Kasugai
  • Patent number: 4462881
    Abstract: A method of forming a multilayer thin film is disclosed in which a second thin conductive film is deposited on a first thin conductive film uninterruptedly after the first thin film has been deposited on a substrate, the first and second films thus formed are processed so as to form a predetermined pattern, the surface of the second thin film is cleaned by ion etching and a third thin conductive film is deposited on the whole surface of the substrate, and then the second and third thin films are processed so as to have a pattern different from the above-mentioned predetermined pattern. In the case where two thin conductive films different in material and pattern from each other are piled on a substrate, the above method can form a perfect interconnection between the two films and can make very small the contact resistance between the two films. Accordingly, the method is fit to form, for example, a barber pole type magnetoresistive element.
    Type: Grant
    Filed: November 18, 1981
    Date of Patent: July 31, 1984
    Assignee: Hitachi, Ltd.
    Inventors: Hiroshi Yamamoto, Noboru Shimizu, Masahide Suenaga, Yukihisa Tsukada, Tooru Takeura
  • Patent number: 4461688
    Abstract: A magnetron sputtering device wherein a plurality of magnetic field sources are employed to enhance uniformity of cathode sputtering. Each of the magnetic field sources is independently capable of establishing a discharge at the cathode if the other magnetic field sources are removed so that portions of a V-shaped erosion pattern produced by a primary discharge are also eroded to thus effect the more uniform cathode sputtering.In one embodiment of the invention, a magnetic field dome of a first polarity is disposed over a second magnetic field dome of the opposite polarity, the domes being disposed over the cathode so that a closed plasma loop is established, the loop including a first sputtering path which extends over the cathode and a second non-sputtering return path which is disposed over the sputtering path and between the first and second magnetic field domes.
    Type: Grant
    Filed: June 23, 1980
    Date of Patent: July 24, 1984
    Assignee: Vac-Tec Systems, Inc.
    Inventor: Charles F. Morrison, Jr.
  • Patent number: 4457820
    Abstract: A method of etching a variable thickness material on a substrate through an opening or openings is disclosed. The method includes a first etch step in which the material is isotropically etched until the substrate material is first exposed defining a first end point. Thereafter, a second anisotropic etch is performed until all of the remaining material at the opening or openings is removed.Preferably the etching is by dry plasma etching and the first end point is detected by monitoring the change in concentration of a reactive species. The change is sharply defined by taking a second derivative of the curve of the change in intensity of the peak of the sensed species.
    Type: Grant
    Filed: December 24, 1981
    Date of Patent: July 3, 1984
    Assignee: International Business Machines Corporation
    Inventors: Steven F. Bergeron, Bernard F. Duncan
  • Patent number: 4456515
    Abstract: A method for producing polarizers, comprising a multiplicity of parallel electrically conductive strips on a glass carrier, having a raster measurement of approximately 1/10 of the light wave length, is characterized in that a layer having a wavy surface is provided of conductive material, having a surface waviness with a period of approximately 50 nm perpendicular to the vapor application direction carried on a glass carrier by means of vapor deposition, selective chemical deposition and the like, with a prescribed deposition angle, and a portion of the material is removed by particle bombardment at a prescribed bombardment angle, with either electrically neutral particles or ions, so that an arrangement of a multiplicity of microstrips is provided in which the microstrips are parallel to one another and separated from and thus electrically insulated from one another on a glass carrier plate.
    Type: Grant
    Filed: April 11, 1979
    Date of Patent: June 26, 1984
    Assignee: Siemens Aktiengesellschaft
    Inventors: Hans Krueger, Hans Rehme