Patents Examined by Ralph Husack
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Patent number: 3983272Abstract: 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: GrantFiled: January 24, 1975Date of Patent: September 28, 1976Assignee: Wacker-Chemie GmbHInventors: Peter Huber, Ewald Pirson, Helga Lampelzammer
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Patent number: 3982052Abstract: 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: GrantFiled: January 27, 1975Date of Patent: September 21, 1976Inventor: Wendell E. Bearce
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Patent number: 3978259Abstract: 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: GrantFiled: October 2, 1974Date of Patent: August 31, 1976Assignee: Bonas Brothers LimitedInventor: William James Hilton
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Patent number: 3976810Abstract: 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: GrantFiled: February 26, 1975Date of Patent: August 24, 1976Assignee: E. I. Du Pont de Nemours and CompanyInventor: James Lee Hecht
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Patent number: 3975554Abstract: 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: GrantFiled: October 15, 1974Date of Patent: August 17, 1976Assignee: Dow Corning CorporationInventors: Joel S. Kummins, John C. Smith, Jr.
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Patent number: 3974322Abstract: 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: GrantFiled: December 17, 1973Date of Patent: August 10, 1976Inventors: Lidia Emelianovna Drabkina, Jury Vatslavovich Mazurek, Dmitry Nikolaevich Myascedov, Viktor Pavlovich Prokhorov, Vladimir Alexandrovich Kachalov, David Moiscevich Ziv, deceased
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Patent number: 3974303Abstract: 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: GrantFiled: July 22, 1974Date of Patent: August 10, 1976Assignee: Kansai Paint Company, Ltd.Inventors: Seigo Iwase, Osamu Isozaki, Naozumi Iwasawa, Tadashi Watanabe
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Patent number: 3974320Abstract: 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: GrantFiled: August 6, 1973Date of Patent: August 10, 1976Assignee: Akzo N.V. of Arnhem, HollandInventors: Klaus Gerlach, Hans Jurgen Pitowski, Klaus Schneider
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Patent number: 3973056Abstract: 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: GrantFiled: June 6, 1974Date of Patent: August 3, 1976Assignee: American Gas Association, Inc.Inventors: Raymond Roy Fessler, Warren Elmer Berry, Russell Lee Wenk, Redvers Nicholson Parkins
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Patent number: 3971874Abstract: 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: GrantFiled: August 26, 1974Date of Patent: July 27, 1976Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Takeo Ohta, Mutsuo Takenaga
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Patent number: 3969130Abstract: 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: GrantFiled: February 5, 1973Date of Patent: July 13, 1976Assignee: General Atomic CompanyInventor: Jack C. Bokros
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Patent number: 3968297Abstract: 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: GrantFiled: August 7, 1974Date of Patent: July 6, 1976Assignee: E. I. Du Pont de Nemours and CompanyInventor: David Allen Sauer
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Patent number: 3962990Abstract: 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: GrantFiled: November 4, 1974Date of Patent: June 15, 1976Assignee: Plastic Coatings LimitedInventors: John Alastair Phipps, Morris James Legg
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Patent number: 3963826Abstract: 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: GrantFiled: March 21, 1975Date of Patent: June 15, 1976Assignee: The United States of America as represented by the United States Energy Research and Development AdministrationInventors: D. Richard Anderson, Robert L. Courtney, Larry A. Harrah
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Patent number: 3962490Abstract: 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: GrantFiled: January 24, 1974Date of Patent: June 8, 1976Assignee: Ferro CorporationInventor: Rodney L. Ward
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Patent number: 3962517Abstract: 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 withType: GrantFiled: June 12, 1974Date of Patent: June 8, 1976Assignee: BICC LimitedInventor: Stefan Verne
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Patent number: 3962492Abstract: 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: GrantFiled: July 30, 1974Date of Patent: June 8, 1976Assignee: Foseco International LimitedInventor: Eric Phelps
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Patent number: 3962513Abstract: 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: GrantFiled: March 28, 1974Date of Patent: June 8, 1976Assignee: Scott Paper CompanyInventor: Arnold C. Eames
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Patent number: 3959533Abstract: 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: GrantFiled: March 25, 1975Date of Patent: May 25, 1976Assignee: Owens-Illinois, Inc.Inventor: Walter Kitaj
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Patent number: 3959526Abstract: 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: GrantFiled: December 20, 1974Date of Patent: May 25, 1976Assignee: E. I. Du Pont de Nemours and CompanyInventor: Isadore Swerlick