Patents Examined by Ronald H. Smith
  • Patent number: 4366191
    Abstract: Increasing the strength and improving other properties of porous carbon or graphite bodies by immersing the porous body in a mixture containing 35-70% hardenable resin and 30 to 65% volatile solvent to impregnate pores. The impregnated porous body is heated to 120.degree. to 180.degree. C. to harden the resin. Carbonization of the body is effected by heating in an inert atmosphere at a rate of at least 3 K/hr to 800.degree.-1300.degree. C. Improved strength bodies are obtained with a single impregnation and single carbonizing step.
    Type: Grant
    Filed: January 19, 1978
    Date of Patent: December 28, 1982
    Assignee: Sigri Elektrographit GmbH
    Inventors: Guido Gistinger, Manfred Schmid
  • Patent number: 4336287
    Abstract: A process for preparing coated glass containers is disclosed. This process comprises applying a coating of an unhydrogenated thermoplastic elastomer on the outside of the glass container and then baking the coated glass container in the presence of oxygen gas at a temperature of from about 150.degree. to about 170.degree. C. for a time period of from about 10 to about 45 minutes. The coated glass containers are both glass fragment retentive and returnable.
    Type: Grant
    Filed: January 4, 1980
    Date of Patent: June 22, 1982
    Assignee: Celanese Corporation
    Inventor: Alex S. Forschirm
  • Patent number: 4336279
    Abstract: Apparatus for practicing the process of the present invention includes a flashing section which emits high-velocity, hot air onto the substrate, and a drying and curing section disposed downstream of the flashing section which emits high-velocity, hot air and radiant energy onto the substrate. The flashing and drying/curing sections are fluidically connected to an exhaust duct disposed upstream of the flashing section whereby the spent hot air, and entrained volatiles, are exhausted and recirculated for subsequent flashing and drying/curing process steps. The flashing section comprises air knives having their exhaust directions inclined in the upstream direction toward the exhaust duct, and fresh ambient air may also enter the exhaust stream from a downstream position so as to alter the percentage of volatiles within the recirculated air stream.
    Type: Grant
    Filed: July 4, 1978
    Date of Patent: June 22, 1982
    Inventor: Wesley A. Metzger
  • Patent number: 4321308
    Abstract: Metal working operations, especially drawing, are facilitated by applying to the metal a composition which provides lubricity thereto and which melts within the range of about 30.degree.-100.degree. C. The composition comprises at least one ester of a carboxylic acid, with a carboxylic acid or derivative thereof, a phosphorus acid salt and an antioxidant being preferred optional ingredients. The composition may be applied in liquid from and solidifies on cooling to ambient and normal storage temperatures. Prior to application, the composition is preferably heated to a temperature higher than its melting temperature for ease of flow and uniform dispersion thereof onto the metal. In a preferred method of application, a reservoir is located beneath the composition applicator and composition is pumped therefrom to the applicator, preferably a roller coater, with excess composition being recirculated.
    Type: Grant
    Filed: September 4, 1979
    Date of Patent: March 23, 1982
    Assignee: The Lubrizol Corporation
    Inventor: Richard W. Jahnke
  • Patent number: 4320323
    Abstract: In an X-ray tube rotary anode having a supporting body (1) of molybdenum alloy, a target (2) of tungsten alloy, and a rough tungsten layer, applied by flame spraying to the whole surface of the anode except the focal path (4), for improving heat radiation, the rough tungsten layer does not adhere well to the tungsten alloy target, and particles of the rough tungsten layer may become detached in use, degrading the performance of the X-ray tube. To alleviate this problem, the whole surface of the anode, except the focal path (4), is blasted with steel grit, steel grit particles embedded in the anode are removed with acid, and the whole surface of the anode, except the target (2), is coated with a rough tungsten layer (3) by plasma spraying.
    Type: Grant
    Filed: March 31, 1980
    Date of Patent: March 16, 1982
    Assignee: U.S. Philips Corporation
    Inventors: Frederik Magendans, Gerhardus A. Te Raa, Bernhard J. van Rheenen
  • Patent number: 4309300
    Abstract: The surfaces of organic polymeric coatings applied to detail parts or components are subject to contamination and ultraviolet degradation prior to final overcoating procedures. The sources of ultraviolet exposure are light transmission through windows, artificial lighting, or temporary exterior exposure of the detail part coated surface. The ultraviolet light altered surface layer is effectively removed by treatment with a mixture of a glycol ether, an alcohol, a ketone and deionized water, without removing the main body of the coating. This results in good adhesion of a subsequently applied touch-up coating or overcoating. The process can also be used for cleaning metals.
    Type: Grant
    Filed: May 4, 1979
    Date of Patent: January 5, 1982
    Assignee: McDonnell Douglas Corporation
    Inventors: Mervin A. Danforth, Julian Giles, Saburo Nakahara
  • Patent number: 4305977
    Abstract: A process for improving the water vapor permeability of polyurethane coatings by incorporating a hydroxy alkyl amine, an alkoxylated amine or the salt of either with an inorganic or organic acid into the coating composition is taught. Coating compositions including this water vapor diffusion enhancing additive are also taught as is a process for coating water vapor permeable substrates.
    Type: Grant
    Filed: September 24, 1979
    Date of Patent: December 15, 1981
    Assignee: Bayer Aktiengesellschaft
    Inventors: Werner Kubitza, Gerhard Mennicken
  • Patent number: 4302490
    Abstract: Production of a device or filter for removal of ozone from air, e.g. in aircraft cabins, by depositing an oxide film containing manganese dioxide on a substrate, particularly a light weight thermally stable substrate, e.g. polybenzimidazole, by treatment with a permanganate solution containing a soluble ceric salt such as ceric ammonium nitrate, and preferably also a dichromate such as sodium dichromate, to form a dense strongly adherent film or coating of MnO.sub.2, ceric oxide and preferably also chromic oxide, on the substrate. A solution containing an oxidizable organic component such as abietic acid can be first applied to the substrate, followed by treatment with the above permanganate solution.
    Type: Grant
    Filed: October 9, 1979
    Date of Patent: November 24, 1981
    Assignee: McDonnell Douglas Corporation
    Inventor: Norman R. Byrd
  • Patent number: 4301215
    Abstract: A process for preparing plastic wood which comprises impregnating wood with a mixture containing (1) an organopolysiloxane having groups which are capable of condensation and/or containing SiC-bonded alkenyl group having an average molecular weight of at least 500 when the organopolysiloxane contains from 0.5 to 1.89 SiC-bonded organic radicals for each silicon atom and when the organopolysiloxane (1) contains from 1.90 to 2 SiC-bonded organic radicals for each silicon atom, then the average molecular weight is at least 20,000 and (2) an organic silicon compound having at least three groups which are capable of condensation and/or atoms capable of condensation and a maximum of 10 silicon atoms per molecule; and other substances if desired; and thereafter crosslinking the organopolysiloxane (1) having groups capable of condensation and/or containing SiC-bonded alkenyl groups, which is present in the wood.
    Type: Grant
    Filed: January 28, 1980
    Date of Patent: November 17, 1981
    Assignee: Wacker-Chemie GmbH
    Inventors: Bernward Deubzer, Erich Brunner, Herman Wilhelm, Konrad Sallersbeck
  • Patent number: 4301017
    Abstract: This invention discloses stable, aqueous polymeric dispersions comprised of at least 25% solids, dry basis, of a starch graft copolymer of a thinned and derivatized starch and at least one vinyl monomer. The starch has a degree of substitution of at least about 0.05 and an intrinsic viscosity of not less than about 0.12 deciliters per gram. The starch graft copolymers have a starch/monomer ratio of less than about 100/25. The dispersions are stable over extended periods of time at normal storage temperatures. Processes for the production of the dispersions are also disclosed.
    Type: Grant
    Filed: April 28, 1980
    Date of Patent: November 17, 1981
    Assignee: Standard Brands Incorporated
    Inventors: Adrian P. Kightlinger, Edwin L. Speakman, Grant T. Van Duzee
  • Patent number: 4299868
    Abstract: This invention relates to compositions which are crosslinkable by heating to form polyurethane plastics for coating substrates, preferably textile sheet-form materials, in particular by the reverse coating process. For ecological and economic reasons, the coating compositions are free from organic solvent or contain at most 10% by weight of organic solvent and consist essentially of linear and/or branched urethane prepolymers having blocked terminal NCO-groups, aqueous dispersions of urethane polymers, vinyl polymers and/or diene polymers and/or aqueous polymer solutions and aliphatic and/or cycloaliphatic and/or aromatic amines containing at least two primary and/or secondary amino groups as latent crosslinkers. The chain extending or crosslinking reaction takes place at an elevated temperature in a coating tunnel after the coating has been applied to a substrate.
    Type: Grant
    Filed: December 28, 1979
    Date of Patent: November 10, 1981
    Assignee: Bayer Aktiengesellschaft
    Inventors: Gerhard Berndt, Eberhard Konig, Josef Pedain, Wilhelm Thoma, Walter Schroer
  • Patent number: 4298655
    Abstract: An improved silicone resin coating composition is provided, the composition comprising a dispersion of colloidal silica in an aliphatic alcohol-water solution of the partial condensate of a silanol with a small stabilizing amount of a .beta.-dicarbonyl compound added thereto.
    Type: Grant
    Filed: July 28, 1980
    Date of Patent: November 3, 1981
    Assignee: General Electric Company
    Inventor: William D. Kray
  • Patent number: 4297265
    Abstract: An improved silicone rubber coating composition is the subject of the invention. A method of reducing the surface tension of cured silicone rubber compositions is also contemplated. By utilizing a silicone rubber polymer dissolved in a suitable solvent at 50-70% concentration, SiO.sub.2 may be introduced into the composition. SiO.sub.2 in a quantity of 90-110% by weight of the polymer solution is utilized. Pigment may be added at 1-2% of the total formula weight if desired. The silicone is preferably at least 95% pure with an average particle size of 9 microns or less.
    Type: Grant
    Filed: November 23, 1979
    Date of Patent: October 27, 1981
    Assignee: Otto Fabric, Inc.
    Inventor: Thomas O. Olsen
  • Patent number: 4297383
    Abstract: This invention relates to an apparatus and method for developing latent fingerprints on an object by fuming said object with the vapors of the chemical cyanoacrylate. Apparatus is disclosed comprising a first chamber to contain the object and to close to form an air tight seal, a second chamber to contain the chemical pool and vapors thereof and a pump system. The method involves pumping the vapors from the second chamber into the first chamber to develop the latent fingerprints on the object to be tested.
    Type: Grant
    Filed: September 12, 1980
    Date of Patent: October 27, 1981
    Inventor: Louis P. Bourdon
  • Patent number: 4297400
    Abstract: A process for imparting to textile materials a soft handle finish is disclosed, wherein an acid amide of the formulaCH.sub.2 .dbd.C(X)--CO--NH--R.sub.1or a reaction product from acrylic or methacrylic acid, or the lower alkyl esters of these acids, and an amine of the formulaR.sub.1 --NH.sub.2is used as a soft-handle agent. R.sub.1 is alkyl or alkenyl having 14 to 22 carbon atoms, and X is hydrogen or methyl.There is preferably produced from the acid amide and commercial emulsifiers and wetting agents, in a novel composition, a concentrated high-pressure emulsion, which is diluted to give an aqueous preparation that is applied to the textile materials.
    Type: Grant
    Filed: August 8, 1979
    Date of Patent: October 27, 1981
    Assignee: Ciba-Geigy Corporation
    Inventors: Jorg Kern, Christian Guth
  • Patent number: 4296158
    Abstract: Information-carrying discs are comprised of a substrate having an information bearing layer derived from 15 to 100% by weight of at least one polyacryloyl-containing heterocyclic monomer.
    Type: Grant
    Filed: February 1, 1980
    Date of Patent: October 20, 1981
    Assignee: Minnesota Mining and Manufacturing Company
    Inventor: Terry W. Lewis
  • Patent number: 4296146
    Abstract: Method and apparatus for removing a resist layer from a substrate surface of different material, such as a semiconductor slice, in the fabrication of an electronic structure, involving exposure of the resist layer to a flame from a combustible gas. The resist layer is employed as a mask in patterning the substrate surface via selective etching, diffusion, or other procedures and is removed from the substrate when it has served its purpose. The resist material may include not only light-sensitive resists more commonly termed "photoresists", but also electron beam-sensitive resists, and resists applied by stencil techniques. The resist layer is exposed to the flame for a period of time sufficient to decompose the resist material, the length of the exposure being a function of several factors, including the type of resist, the thickness of the layer, and the manufacturing processes to which the slice was subjected prior to the resist removal step.
    Type: Grant
    Filed: December 2, 1977
    Date of Patent: October 20, 1981
    Assignee: Texas Instruments Incorporated
    Inventor: Thomas C. Penn
  • Patent number: 4296148
    Abstract: To improve response time and provide an electrode which has good adhesion to a solid electrolyte body, typically of zirconium, to be used in lambda sensors or polarographic current limit sensors, and additionally enhance the loading capability thereof, the pre-sintered or fully sintered solid electrolyte body, typically of zirconium dioxide, has an electrode layer applied thereto on which, in advance of sintering thereof, a cover layer is applied which, when sintered, develops pores. The cover layer is a ceramic material, sintered together with the electrode on the solid electrode body. This results in higher loading capability and decrease in response temperature to about 250.degree. C. The sensors can be used as lambda sensors and polarographic current sensors, to determine oxygen content in exhaust gases, typically for automotive engines, as well as in high-temperature fuel cells, high-temperature batteries, and high-temperature electrolysis cells.
    Type: Grant
    Filed: November 29, 1979
    Date of Patent: October 20, 1981
    Assignee: Robert Bosch GmbH
    Inventor: Karl-Hermann Friese
  • Patent number: 4294950
    Abstract: A coating composition according to the invention comprises at least one compound selected from hydrolyzates of glycidoxyalkyltrialkoxysilane or (3,4-epoxycyclohexyl) alkylalkoxysilane, a compound selected from the group consisting of unsaturated or saturated polyvalent carboxylic acids or anhydrides thereof, and a curing agent. The composition is coated to the surface of plastic molded product and then cured to constitute a coating film, thereby imparting to the molded product an improved surface hardness, abrasion resistance, antistatic property, thermal resistance etc.
    Type: Grant
    Filed: January 30, 1980
    Date of Patent: October 13, 1981
    Assignee: Ito Optical Industrial Co., Ltd.
    Inventor: Hirohisa Kato
  • Patent number: RE30892
    Abstract: Retroreflective-treated fabrics, and products and methods for forming the treatments are taught. As an example, a free-flowing mass of minute retroreflectorization particles that each comprise hemispherically reflectorized transparent microspheres supported in a softenable binder material are cascaded onto a fabric. The binder material is softened during application to provide adhesion of the particles to the fabric. A very sparse retroreflective treatment can be provided, which leaves the fabric with nearly its full original appearance as well as hand, feel, and breathability. Yet the treatment will greatly increase the safety of a pedestrian by making him visible at night.
    Type: Grant
    Filed: April 11, 1979
    Date of Patent: March 30, 1982
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Wallace K. Bingham, Terry R. Bailey