Patents Examined by Ralph Husack
  • Patent number: 3983272
    Abstract: A method for improving the lubricity and antistatic properties of organic fibers comprising coating the fibers with a composition containing a diorganopolysiloxane, a phosphorous compound capable of imparting antistatic properties to the fibers, and, if desired, paraffin waxes.
    Type: Grant
    Filed: January 24, 1975
    Date of Patent: September 28, 1976
    Assignee: Wacker-Chemie GmbH
    Inventors: Peter Huber, Ewald Pirson, Helga Lampelzammer
  • Patent number: 3982052
    Abstract: A method and apparatus for drying wet coal granules or particles by introducing a liquid petroleum or coal derivative into the wet granular material, either before feeding into a dryer, or while it is fed, or at some point along the dryer cylinder embodying my prior patent 3,401,923. Thus the danger of explosion or obnoxious dust resulting from dry coal is eliminated and the calorific value of the coal is greatly increased. A modification of the air lock shown in my prior U.S. Pat. No. 3,401,923 is also made for improving the passage of heated particles into the housing.
    Type: Grant
    Filed: January 27, 1975
    Date of Patent: September 21, 1976
    Inventor: Wendell E. Bearce
  • Patent number: 3978259
    Abstract: Textile fabric, a part of which has its coefficient of friction increased by application to said part of an inert, non-slump, room temperature vulcanizing silicone rubber, which rubber is thereafter vulcanized.
    Type: Grant
    Filed: October 2, 1974
    Date of Patent: August 31, 1976
    Assignee: Bonas Brothers Limited
    Inventor: William James Hilton
  • Patent number: 3976810
    Abstract: The process of coating an organic polymeric shaped article with aluminum orthophosphate, using an anion compound as a source of aluminum, and topcoating with a polymer is further improved to enhance barrier properties under moist conditions. The aluminum orthophosphate coating is dried to effect no more than a partial cure and the anion concentration is reduced below about 1% of the weight of the solids content of the coating prior to completing the cure. The top-coating may be applied prior to completing the cure and then dried at a temperature to effect a substantially complete cure of the aluminum orthophosphate.
    Type: Grant
    Filed: February 26, 1975
    Date of Patent: August 24, 1976
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: James Lee Hecht
  • Patent number: 3975554
    Abstract: A light-fugitive dye is added to silicon-containing priming compositions to aid in the application of the priming compositions to a surface and to aid in the application of silicon-containing coating compositions over the primed surface before becoming colorless in the presence of light.
    Type: Grant
    Filed: October 15, 1974
    Date of Patent: August 17, 1976
    Assignee: Dow Corning Corporation
    Inventors: Joel S. Kummins, John C. Smith, Jr.
  • Patent number: 3974322
    Abstract: A radioactive layer in a radioactive source is sealed by the application of a sealing layer on the radioactive layer. The sealing layer can consist of a film of oxide of titanium, tin, zirconium, aluminum, or chromium. Preferably, the sealing layer is pure titanium dioxide. The radioactive layer is embedded in a finish enamel which, in turn, is on a priming enamel which surrounds a substrate.
    Type: Grant
    Filed: December 17, 1973
    Date of Patent: August 10, 1976
    Inventors: Lidia Emelianovna Drabkina, Jury Vatslavovich Mazurek, Dmitry Nikolaevich Myascedov, Viktor Pavlovich Prokhorov, Vladimir Alexandrovich Kachalov, David Moiscevich Ziv, deceased
  • Patent number: 3974303
    Abstract: A method for forming coating films which can provide coating films having good surface appearance and being excellent in such properties as impact resistance, adhesion to the substrate article, flexibility and chemical resistance, said method comprising coating a powdery composition of a thermoplastic resin having 0.5 to 3.5 polymerizable unsaturated bonds per 1000 of the molecular weight on an article to be coated, heat-melting the powdery resinous composition, and curing the molten film under application of ionizing radiation or ultraviolet radiation.
    Type: Grant
    Filed: July 22, 1974
    Date of Patent: August 10, 1976
    Assignee: Kansai Paint Company, Ltd.
    Inventors: Seigo Iwase, Osamu Isozaki, Naozumi Iwasawa, Tadashi Watanabe
  • Patent number: 3974320
    Abstract: A synthetic leather consisting essentially of three adherent microporous polyurethane layers, including a first base layer of a polyurethane impregnated fibrous fleece or web, a second or intermediate polyurethane layer containing 3-30% by weight of very finely divided insoluble solid particles with an individual volume is less than 2.times.10.sup..sup.-2 mm..sup.3 and with a maximum length generally below about 0.3 mm., preferably less than 0.1 mm., and a third or cover polyurethane layer which can be finished in a conventional manner. The product is especially distinguished by a smooth and uniform surface resistant to the "orange peel" effect. The method is distinguished by the application of the intermediate layer before the base layer is completely coagulated or solidified in the formation of the microporous structure.
    Type: Grant
    Filed: August 6, 1973
    Date of Patent: August 10, 1976
    Assignee: Akzo N.V. of Arnhem, Holland
    Inventors: Klaus Gerlach, Hans Jurgen Pitowski, Klaus Schneider
  • Patent number: 3973056
    Abstract: A method for inhibiting stress-corrosion cracking of a steel pipeline transmitting gas under elevated pressure provided with an external protective coating and means for cathodic protection, and steep pipe and pipelines so protected are described. The method consists of introducing a composition containing at least one of the inhibitors, calcium monobasic phosphate, sodium monobasic phosphate, sodium tripolyphosphate and potassium silicate, into a buried pipeline environment. The inhibiting composition may be simply introduced to the environment adjacent the pipeline or it may be incorporated in a coating on the pipeline, either in the primer or in a top coating thereover or in an intermediate coating between a conventional primer and topcoating, or in a tape applied to the pipeline.
    Type: Grant
    Filed: June 6, 1974
    Date of Patent: August 3, 1976
    Assignee: American Gas Association, Inc.
    Inventors: Raymond Roy Fessler, Warren Elmer Berry, Russell Lee Wenk, Redvers Nicholson Parkins
  • Patent number: 3971874
    Abstract: An optical information storage material having a transparent base and a film deposited on the base, the state of which can be changed between a low optical density state and a high optical density state by the application of electrical, optical or thermal energy. The film is a tellurium oxide having the composition TeO.sub.x1 in which 0<x1<2.0, or a mixture of such a tellurium oxide and vanadium oxide for making it easier to change the state of the film material, or tellurium oxide and lead oxide for increasing the sensitivity of the film. The material is made by vacuum evaporating and depositing the tellurium oxide or the mixture of tellurium oxide with the vanadium or lead oxide from TeO.sub.2 or a solid solution of TeO.sub.2 and lead or vanadium oxide.
    Type: Grant
    Filed: August 26, 1974
    Date of Patent: July 27, 1976
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Takeo Ohta, Mutsuo Takenaga
  • Patent number: 3969130
    Abstract: A pyrolytic carbon-coated article having improved wear resistance as a result of providing a thin wear-resistant layer just below the outer surface. The layer contains an alloy of pyrolytic carbon and a metal or metalloid carbide and is made by changing the composition in a deposition region without halting deposition so as to create transition regions adjacent the layer which include gradually lesser amounts of the alloying carbide.
    Type: Grant
    Filed: February 5, 1973
    Date of Patent: July 13, 1976
    Assignee: General Atomic Company
    Inventor: Jack C. Bokros
  • Patent number: 3968297
    Abstract: Coated glass fabric of improved flex life is provided, the coating on the fabric comprising (a) unsintered polytetrafluoroethylene having a specific melt viscosity of at least 1 .times. 10.sup.9 poises at 380.degree.C. and (b) a condensation product of a polyhydrolyzable compound which is a compound of tetravalent titanium, zirconium, or tin. The coating can also contain a water repellent additive which prevents water from soaking into the fabric. The coating is present on the glass fabric either as a blend of (a) and (b) or as a basecoat of (b) and topcoat of (a) on the glass fabric. The blend coating can be obtained by applying a dispersion of (a) which contains (b) still in the polyhydrolyzable state, and optionally, the water repellent additive, to the fabric, followed by drying without sintering the polytetrafluoroethylene.
    Type: Grant
    Filed: August 7, 1974
    Date of Patent: July 6, 1976
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: David Allen Sauer
  • Patent number: 3962990
    Abstract: Apparatus for externally coating an elongate article having a low thermal mass comprises a coating channel, means for supplying coating powder to the coating channel to support and immerse an article, the coating channel having a substantially V-form cross-section with opposing sidewalls which converge in the downstream sense to maintain the required depth of coating powder, means for passing the article through the coating channel to an outlet thereof, means for heating the article before it enters the coating channel, means for vibrating the coating channel, and a conveyor which passes beneath the outlet of the coating channel in a direction parallel to the coating channel wherein the conveyor is arranged to receive the article from the coating channel together with a supporting compacted bed of coating powder in which the article remains immersed.
    Type: Grant
    Filed: November 4, 1974
    Date of Patent: June 15, 1976
    Assignee: Plastic Coatings Limited
    Inventors: John Alastair Phipps, Morris James Legg
  • Patent number: 3963826
    Abstract: The invention relates to the gettering of hydrogen and its isotopes, the gettering materials being painted or coated onto, or otherwise disposed in an area or volume from which hydrogen is to be removed.
    Type: Grant
    Filed: March 21, 1975
    Date of Patent: June 15, 1976
    Assignee: The United States of America as represented by the United States Energy Research and Development Administration
    Inventors: D. Richard Anderson, Robert L. Courtney, Larry A. Harrah
  • Patent number: 3962490
    Abstract: A process and product are disclosed relating to the preparation of a metallic substrate of a workpiece for a subsequent deposition of a ceramic coating, such as porcelain enamel, in which the metal of the substrate is one that is not sufficiently electrochemically active to be coated by electrophoresis, for example, stainless steel or those alloys containing principally nickel and/or chromium. In one form, the metallic substrate is first covered with an oxide, and preferably a thermally decomposable compound, of a transition metal selected from Groups IIIB through Group IIB of the Periodic Table of The Elements. The workpiece is then heated to alloy the transition metal with the substrate of the workpiece, after which a ceramic coat may be applied. When the transition metal is present as a thermally decomposable compound, the compound must decompose prior to reaching an alloying temperature.
    Type: Grant
    Filed: January 24, 1974
    Date of Patent: June 8, 1976
    Assignee: Ferro Corporation
    Inventor: Rodney L. Ward
  • Patent number: 3962517
    Abstract: A cable core and method of forming such core is provided including a conductor having an extruded dielectric of an insulating material selected from the group of insulating materials consisting of rubber and plastics materials, a dielectric screen comprising a layer of conductive or semi-conductive material selected from the group consisting of conductive and semi-conductive rubber and plastics materials and, interposed between and bonded to the extruded dielectric and the dielectric screen throughout substantially the whole length of the core, an intermediate layer having at least in a circumferentially continuous zone of the layer a cohesive strength substantially less than the cohesive strengths of the extruded dielectric and the dielectric screen and substantially less than the strengths of the bonds between the intermediate layer and the dielectric screen such that when stripping the dielectric screen from the core over a part of its length for jointing or terminating purposes separation takes place with
    Type: Grant
    Filed: June 12, 1974
    Date of Patent: June 8, 1976
    Assignee: BICC Limited
    Inventor: Stefan Verne
  • Patent number: 3962492
    Abstract: Refractory linings for molten metal containers, e.g. tundishes, are protected by applying thereon first a layer comprising essentially unbonded carbonaceous particulate material and then on top of the first layer a second layer of bonded particulate material.
    Type: Grant
    Filed: July 30, 1974
    Date of Patent: June 8, 1976
    Assignee: Foseco International Limited
    Inventor: Eric Phelps
  • Patent number: 3962513
    Abstract: A transfer film comprising a transparent substrate having thereon a coating comprising particles which absorb laser energy and a self-oxidizing binder is improved by overlying the coating with a layer of ink - receptive resin. Material is transferred by a laser beam from the transparent carrier film to a lithographic surface, thereby producing a planographic printing plate and a film having clear areas corresponding to the image on the plate.
    Type: Grant
    Filed: March 28, 1974
    Date of Patent: June 8, 1976
    Assignee: Scott Paper Company
    Inventor: Arnold C. Eames
  • Patent number: 3959533
    Abstract: The adhesion of rubbery copolymers such as styrene-butadiene and styrene-isoprene rubbers to glass is vastly improved by first applying to the glass surface a combination of two primers within specified ratios and separately applying the copolymer thereover. In addition, the alkali resistance of the resulting bond is excellent when exposed to the normal washing cycle for glassware so coated. The method comprises first applying a combination of from 90 to 95% by weight of a first primer consisting of a 50% by weight latex containing 55 mol percent styrene and 45 mol percent butadiene plus 2% by weight of N-aminoethyl-gamma-aminopropyltrimethoxysilane and from 10 to 5% by weight of a second primer consisting of 8.4 parts by weight of an epichlorohydrin-bisphenol A resin, 1.6 parts by weight of N-Aminoethyl-gamma-aminopropyltrimethoxysilane and 45 parts by weight each of ethyleneglycolmonomethylether and ethyleneglycolmonoethyl ether acetate.
    Type: Grant
    Filed: March 25, 1975
    Date of Patent: May 25, 1976
    Assignee: Owens-Illinois, Inc.
    Inventor: Walter Kitaj
  • Patent number: 3959526
    Abstract: An improvement in a process for preparing a high barrier, heat-sealable packaging material. A flexible base sheet carrying at least a one side copolymer high barrier coating applied from a solvent solution receives a second copolymer coating having optimum heat sealing properties from a dilute solvent coating system thereby yielding, when finally dried, a double copolymer distribution on the base sheet surface having a low level of total retained solvents, particularly high boiling point solvents.
    Type: Grant
    Filed: December 20, 1974
    Date of Patent: May 25, 1976
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Isadore Swerlick