Patents Examined by Edith R. Buffalow
  • Patent number: 3958070
    Abstract: A novel material is disclosed that is useful for the manufacture of durable metal articles which have differently colored surface zones.
    Type: Grant
    Filed: June 10, 1974
    Date of Patent: May 18, 1976
    Assignee: Schwarzkopf Development Corporation
    Inventors: Wilfried Schintlmeister, Oskar Pacher
  • Patent number: 3956540
    Abstract: A method of and apparatus for applying a synthetic resin coating of predetermined thickness to various articles of different sizes and shapes from a relatively rapidly deteriorating solution of the resin in which an intermittently driven conveyor housed in a controlled atmosphere and suspending different article groups of like articles at spaced locations along the conveyor successively moves the articles from a loading station first to a cleaning station at which the articles are subjected to the action of an ultrasonic cleaner, then to a destaticizing station, then to a coating station at which a dip tank is rapidly raised to immerse the articles in the solution and is lowered at a controlled rate to provide a coating of the required thickness in a single operation, and finally through a precuring zone in which the coating dries tack-free to the loading station at which the coated precured articles can be removed.
    Type: Grant
    Filed: September 10, 1973
    Date of Patent: May 11, 1976
    Assignee: Omnitech Inc.
    Inventors: Albert J. Laliberte, Armand DeAngelis
  • Patent number: 3956568
    Abstract: A process for the preparation of a carbon-metal composite material for mechanical sliding members, comprising impregnating a carbon substrate with an alloy comprising copper, nickel or a copper-nickel as a base metal and at least one of titanium, zirconium and silicon as a wetting agent for the carbon. In one embodiment, the alloy further comprises at least one of a third component such as tin, antimony, zinc, manganese, iron, chromium, lead, magnesium and phosphorus.
    Type: Grant
    Filed: March 6, 1974
    Date of Patent: May 11, 1976
    Assignee: Nippon Carbon Co. Ltd.
    Inventors: Toyonosuke Kanemaru, Hiroshi Yamazoe, Hiroshi Ichikawa
  • Patent number: 3956164
    Abstract: Combination of ethylenediaminetetraacetic acid and nitrilotriacetic acid or water soluble salts thereof for the removal and prevention of scale in steam generators.
    Type: Grant
    Filed: September 23, 1974
    Date of Patent: May 11, 1976
    Assignee: Calgon Corporation
    Inventors: Jerry Lee Walker, Thomas Edward Cornelius, III
  • Patent number: 3955013
    Abstract: A process is disclosed for producing a thin film of elemental germanium on the surface of a germanate glass composition by means of a focused laser.
    Type: Grant
    Filed: June 21, 1974
    Date of Patent: May 4, 1976
    Assignee: Grumman Aerospace Corporation
    Inventor: Herbert D. Kivlighn, Jr.
  • Patent number: 3953642
    Abstract: A pressure sensitive recording sheet adapted for imaging under the pressure of a typewriter key or other writing instrument. The sheet comprises a ply of high surface area polyolefin fibers masking a colored medium therein. The ply of polyolefin fibers when subjected to the localized pressure of a writing instrument becomes relatively transparent in the region where the pressure is applied, to make distinct the colored medium distributed in the recording sheet.
    Type: Grant
    Filed: January 9, 1974
    Date of Patent: April 27, 1976
    Assignee: Crown Zellerbach Corporation
    Inventors: Dennis L. Forbess, John E. Hanby
  • Patent number: 3952120
    Abstract: Large steel products such as structural sections, castings, forgings and machined sections are coated with a smooth, adherent, bright metallic coating comprised of 25 to 85% aluminum, silicon in an amount of 0.7% or more by weight of the amount of aluminum and the balance substantially zinc without the occurrence of detrimental exothermic reactions of the coating medium with the base metal.
    Type: Grant
    Filed: May 31, 1974
    Date of Patent: April 20, 1976
    Assignee: Bethlehem Steel Corporation
    Inventors: James B. Horton, Angelo R. Borzillo
  • Patent number: 3951878
    Abstract: A surface-active composition consisting essentially of (a) a compound having the structure: ##EQU1## wherein R is a member of the group consisting of C.sub.2 H.sub.4 and C.sub.3 H.sub.6 and X is a member of the group consisting of OH and NH.sub.2, and (b) another surface-active agent selected from the group consisting of anionic, cationic and non-ionic surface active agents.
    Type: Grant
    Filed: November 23, 1971
    Date of Patent: April 20, 1976
    Assignee: Millmaster Onyx Corporation
    Inventors: Reginald L. Wakeman, Zdzislaw J. Dudzinski, Arnold Lada
  • Patent number: 3949134
    Abstract: A solar control film, for application to window glass by the consumer with minimum or no preparation, comprises a vapor deposited aluminum coat, which partially transmits light, interposed between a vinyl stratum and a polyester stratum, either of which contains an ultraviolet inhibitor and each of which is self supporting. This film is adhered by pressing the surface of its vinyl stratum against the window glass in either dry or wet condition.
    Type: Grant
    Filed: July 18, 1973
    Date of Patent: April 6, 1976
    Assignee: Material Distributors Corporation
    Inventor: Michael E. Willdorf
  • Patent number: 3948791
    Abstract: An ion exchanger consisting of crushed lignite or brown coal retaining alkali ions, which is obtained by immersing the particles in a dilute caustic alkali solution. The concentration of the caustic alkali ranges from 2 to 20 weight percent, preferably from 3 to 10 weight percent. Following the treatment with the alkali, the system is washed with an acid with a pH of 3 to 7 to remove the alkali liquid. The resultant lignite has less than 4 meq/g, for instance 2.60 to 3.50 meq/g, of sodium ions and exhibits abilities of ion exchange. By treating the alkali treated lignite with hydrochloric acid or sulfuric acid it is possible to retain hydrogen ions, and by using a solution of a calcium salt such as calcium chloride calcium ions can be retained. Thus, calcium ions or potassium ions may be exchanged with cations of a salt of metal of Group second in the periodic table such as calcium, magnesium, barium and zinc.
    Type: Grant
    Filed: August 20, 1973
    Date of Patent: April 6, 1976
    Assignee: Japan Metals and Chemicals Co., Ltd.
    Inventors: Mitsuharu Tominaga, Mamoru Mimori, Kinnosuke Okuda
  • Patent number: 3947616
    Abstract: Cemented refractory metal carbides are coated with cobalt to a predetermined thickness by immersing a cemented refractory metal carbide in an aqueous slurry consisting essentially of a cobalt source, a hydrazine compound and a buffering agent to provide a pH greater than 7 and maintaining the temperature of the slurry at from about to for a sufficient time to achieve the desired thickness of cobalt coating on the external surfaces of the cemented refractory metal carbide.
    Type: Grant
    Filed: September 27, 1973
    Date of Patent: March 30, 1976
    Assignee: GTE Sylvania Incorporated
    Inventors: Joseph E. Ritsko, Donald S. Parsons
  • Patent number: 3947610
    Abstract: Leaks in closed cooling systems containing an aqueous medium as the coolant, are sealed by electroless deposition of a metal or metal containing compound from a water soluble, easily reducible metal compound. A complexing agent may be added to the coolant to assist in solubilizing the easily reducible metal compound. In one embodiment, the reducible metal compound is formed in situ by attacking the conduit walls of the cooling system so as to form solubilized compounds, or compounds which can be solubilized by addition of suitable complexing agents.
    Type: Grant
    Filed: August 7, 1974
    Date of Patent: March 30, 1976
    Assignee: BBC Brown, Boveri & Company Limited
    Inventors: Maurice Bodmer, Edmund Hartinger, Albert Huber
  • Patent number: 3946137
    Abstract: This invention relates to a decorative plastic laminate preferably one having a high wear resistant decorative surface in which the various layers have controlled wear indices so as to provide the laminate with improved uniform machineable properties.
    Type: Grant
    Filed: May 16, 1973
    Date of Patent: March 23, 1976
    Assignee: Formica Corporation
    Inventors: George Edward Power, Dudley Wulfekotter
  • Patent number: 3944697
    Abstract: A glass body having a fluorescent pattern inwardly of a surface thereof is formed by depositing a first material in a predetermined pattern on a surface of glass containing readily ion-exchangeable first ions, the first material containing second ions capable of ion-exchange with the first ions, one of the glass and the first material containing ions for providing a fluorescence center, and by causing the second ions to penetrate into the glass through ion-exchange with the first ions so that the fluorescence-center providing ions may be distributed in a pattern which is in positive or negative relationship with the predetermined pattern.
    Type: Grant
    Filed: May 9, 1973
    Date of Patent: March 16, 1976
    Assignee: Nippon Kogaku K.K.
    Inventors: Takeo Ichimura, Teruo Kaneko
  • Patent number: 3944712
    Abstract: Steel ligatures are provided having coated thereon a thin film of a resin composition containing zinc particles. The resin composition comprises a mixture of an epoxy resin and a phenolic resin, and the coating may be cured, or substantially uncured, as desired.
    Type: Grant
    Filed: August 10, 1973
    Date of Patent: March 16, 1976
    Assignee: Signode Corporation
    Inventor: Joseph F. Kurcz
  • Patent number: 3937858
    Abstract: Aluminum or an aluminum alloy is plated on a metallic substrate from a bath of molten aluminum or aluminum alloy containing 0.005 to 1.0% (preferably 0.01 to 0.5%) strontium and/or 0.01 to 5.0% antimony. The metal substrate is preferably iron, steel, or a noniron metal such as copper, titanium, nickel, cobalt, chromium, tantalum, tungsten, vanadium or zirconium. The bath may also contain 1.0 to 15.0% by weight silicon and 0.005 to 1.0% beryllium.
    Type: Grant
    Filed: February 13, 1974
    Date of Patent: February 10, 1976
    Assignee: Metallgesellschaft Aktiengesellschaft
    Inventor: Wolfgang Thiele
  • Patent number: 3936540
    Abstract: In wet process hot dip galvanising use is made of a flux which melts at below and consists of 30 - 70% by weight magnesium chloride and 20 - 70% by weight sodium chloride and/or potassium chloride.
    Type: Grant
    Filed: June 12, 1974
    Date of Patent: February 3, 1976
    Assignee: Foseco International Limited
    Inventor: Ian James
  • Patent number: 3935034
    Abstract: This invention is addressed to a process for the diffusion coating of metals which are capable of forming a compound or a solid solution with boron by contacting the metal with boron at a temperature greater than
    Type: Grant
    Filed: July 3, 1974
    Date of Patent: January 27, 1976
    Assignee: Howmet Corporation
    Inventor: William J. Hayes
  • Patent number: 3934065
    Abstract: A new retroreflective sheet material is taught that comprises a light-transmissive retroreflective open web of filaments that are individually encased by a monolayer of minute retroreflective microspheres, the web being ensheathed within an envelope that comprises two overlaid sheets joined together around the edge of the envelope, at least one of the sheets being transparent.
    Type: Grant
    Filed: August 1, 1973
    Date of Patent: January 20, 1976
    Assignee: Minnesota Mining and Manufacturing Company
    Inventor: Chi Fang Tung
  • Patent number: 3932683
    Abstract: Objectionable ripple formation in continuous hot-dip coating is avoided by using a single set of blowing nozzles and directing the gas streams downwardly against the strip at an angle between the strip and the center line of the gas stream of from about to about, preferably from about to about The technique is particularly useful at low line speeds of 150 feet per minute or less, especially at high coating weights of 1.5 ounces per square foot or more.
    Type: Grant
    Filed: October 10, 1972
    Date of Patent: January 13, 1976
    Assignee: Inland Steel Company
    Inventors: Norman A. Robins, Frank H. Bugajski