Patents Examined by Ralph Husack
  • Patent number: 4055781
    Abstract: A fluorescent lamp which enhances the colors blue and red while maintaining an acceptable overall color rendition contains a four component phosphor blend comprising three broad band emitting phosphors and a narror band emitting phosphor which peaks in the deep red region of the visible spectrum.
    Type: Grant
    Filed: September 9, 1974
    Date of Patent: October 25, 1977
    Assignee: GTE Sylvania Incorporated
    Inventor: Willy P. Schreurs
  • Patent number: 4015044
    Abstract: This invention involves a new class of silane adhesion promoters for the bonding of polyurethane sealants to a variety of substrates. These silane adhesion promoters are bis-trialkoxysilylorgano polysulfide compounds.
    Type: Grant
    Filed: March 27, 1975
    Date of Patent: March 29, 1977
    Assignee: Union Carbide Corporation
    Inventors: Maurice W. Ranney, Robert J. Pickwell
  • Patent number: 4013696
    Abstract: A combination of improved coatability of a coating composition onto an anionic surfactant-containing contiguous layer of a radiation-sensitive or non-radiation sensitive film element, plus better control of static electricity on the resulting coated film element, especially on a radiation sensitive photographic element, results from using a coating composition containing a surfactant mixture of (a) a certain type of cationic perfluorinated alkyl surfactant, such as perfluorooctylsulfonamido-(N-propyl-3-N,N,N-trimethyl) ammonium iodide, with (b) a certain type of nonionic alkylphenoxypoly(propylene oxide) surfactant, such as para-isononylphenoxy decaglycidol, as a coating aid in the application of fluid coatings, preferably by simultaneous coating techniques, to form multiple layers in an element during the making of the element. The presence of a hydrophilic polymeric binder, such as gelatin, in the coating composition is desirable.
    Type: Grant
    Filed: August 28, 1974
    Date of Patent: March 22, 1977
    Assignee: Eastman Kodak Company
    Inventors: John M. Babbitt, James F. Houle
  • Patent number: 4009317
    Abstract: A coating composition for glass fibers comprising a film former of emulsified clad particles having a core of poly alkyl methacrylates and that include at least 5% of methyl methacrylate and a cladding of a softer thermoplastic polymeric material having a Tg of C or less. A method of producing such emulsified coated particles is also disclosed, as well as glass fibers coated with such mixtures.
    Type: Grant
    Filed: November 14, 1973
    Date of Patent: February 22, 1977
    Assignee: Owens-Corning Fiberglas Corporation
    Inventors: Kenneth P. Chase, Harold L. Haynes, Michael G. Roberts
  • Patent number: 4004851
    Abstract: The outer surface of a transparent optical mass is directly coated with an internal reflection suppressing coating having an index of refraction smaller than that of the optical mass for suppressing internal reflections of light passing through the mass at angles of incidence to the surface greater than the critical angle. The coating includes a dispersing medium and a material in the form of light absorbing particles having dimensions smaller than one-fifth of the wavelength of visible light dispersed in the medium. The particles have a sufficient density near the surface to absorb a major portion of visible light at all wavelengths incident upon the surface through the mass at angles of incidence greater than the critical angle.
    Type: Grant
    Filed: October 10, 1972
    Date of Patent: January 25, 1977
    Inventors: Hirokazu Negishi, Kazuya Matsumoto
  • Patent number: 4004052
    Abstract: A process for producing a non-porous coating for corundum substrates with a corundum content of 90 to 100% the process comprises applying a barium, calcium or strontium alumosilicate glaze to the substrate, followed by heat treatment of the substrate at a temperature within a range of from 1,350 to 1, at a heating rate of from to C per hour, and thereafter cooling at a rate of about C per hour, thus giving a glass-ceramic coating on the substrate. The process is useful, mainly, for producing integral circuits and other micro-circuits and precision resistors.
    Type: Grant
    Filed: December 1, 1975
    Date of Patent: January 18, 1977
    Inventors: Vera Ivanovna Bystrova, Galina Konstantinovna Kirillova, Galina Atkhipovna Mikhailova
  • Patent number: 4002781
    Abstract: This invention relates to a process for making carrier sheets containing hardenable polyester resins by treating the carrier sheets with solutions or emulsions of polyester resins, which comprisesA. impregnating the carrier sheet with an aqueous solution of a hardenable water-soluble polyester resin,B. substantially drying the carrier sheet containing the aqueous solution of the hardenable polyester resin,C. applying a polymerizable unsaturated compound onto the resin-containing carrier sheet in a quantity sufficient for subsequent cross-linking,D. coating the treated resin-containing carrier sheet with a solution or an aqueous dispersion of a water-insoluble hardenable polyester resin containing a cross-linking agent, andE. substantially drying the resultant product of the process.
    Type: Grant
    Filed: December 28, 1971
    Date of Patent: January 11, 1977
    Assignee: Th. Goldschmidt AG
    Inventors: Jurgen Fock, Ulrich Holtschmidt
  • Patent number: 4001024
    Abstract: The simultaneous high speed application of a plurality of liquid coating compositions to a moving web by the method of multi-layer bead coating is improved by coating the lowermost layer as a thin layer formed from a low viscosity coating composition and coating the layer immediately above the lowermost layer as a thicker layer of higher viscosity such that vortical action of the coating bead is confined to the lowermost layer and the layer immediately above it. By this means, intermixing of the coating composition forming the lowermost layer with the coating composition forming the layer immediately above it occurs, but all other layers are coated in discrete form. The method is especially useful in the manufacture of multi-layer photographic films and papers.
    Type: Grant
    Filed: March 22, 1976
    Date of Patent: January 4, 1977
    Assignee: Eastman Kodak Company
    Inventors: Donald Allen Dittman, Francis Armand Rozzi
  • Patent number: 4001477
    Abstract: A flame resistant cloth or fabric comprising synthetic fibers prepared from resin condensation products of phenols and aldehydes which can be fiberized and cured. These fabrics may include blends of phenolic resin fibers with other fire resistant fibers such as wool, silk, polyamide fibers, polyacrylonitrile fibers, mineral and glass fibers, among others.
    Type: Grant
    Filed: July 12, 1973
    Date of Patent: January 4, 1977
    Assignee: The Carborundum Company
    Inventors: James Economy, Francis J. Frechette, Luis C. Wohrer
  • Patent number: 4000347
    Abstract: This invention relates to enhancing the bonding of polysulfide sealants to a variety of inorganic substrates, most particularly, to metal, ceramic, concrete, and glass substrates. The enhanced bonding of the polysulfide sealant is achieved by the use of a silane adhesion promoter which is characterized by the following formula: (S.sub.n).sub.a [R -- SiX.sub.3 ].sub.b wherein n is a number ranging from about 2 to about 6, a is a number equal to one-half the free valence of R, b is a number equal to at least 2, R is a divalent organic radical joined at one end to sulphur and at the other end to silicon, and X is a hydrolyzable group.
    Type: Grant
    Filed: March 27, 1975
    Date of Patent: December 28, 1976
    Assignee: Union Carbide Corporation
    Inventors: Maurice W. Ranney, Robert J. Pickwell
  • Patent number: 4000338
    Abstract: Small workpieces to be coated with plastic material are preheated and dropped onto a fluidized bed of plastic powder subjected to compound vibratory motion which causes the powder and the workpieces to move along a helical ramp onto a screen overlying the point of entry, with some of the particles fusing onto the workpiece surfaces to form a film. The remainder of the powder, on reaching the screen, drops back onto the bed as the coated workpieces move on to a receptacle. Fresh workpieces are deposited on the bed through one or more chutes traversing the screen; to prevent the rise of any particles through the chutes, a downward airflow is created therein.
    Type: Grant
    Filed: July 23, 1973
    Date of Patent: December 28, 1976
    Assignee: Societe Anonyme dite Ato Chimie
    Inventor: Jacques Antoine Burdin
  • Patent number: 3998991
    Abstract: In accordance with a preferred embodiment of this invention, a styrene-acrylonitrile copolymer (SAN) surface is coated with a weatherable, transparent and abrasion-resistant material. The film coating, which is typically less than one micron thick, is formed on a SAN surface which has been chemically activated by direct contact with a strong oxidizing agent. The coating consists essentially of the condensation reaction product of a partially hydrolyzed poly(vinyl acetate), equilibrated tetraethyl orthosilicate and a silane compound, which also acts as an adhesion promoting agent and which is selected from the group consisting of compounds with the general formula: ##EQU1## where x is from 1 to 10 and compounds with the general formula: ##EQU2## where x is from 1 to 10 and y is from 1 to 10. The trimethoxy functionality of the silane compound is initially hydrolyzed to a trisilanol functionality.
    Type: Grant
    Filed: March 29, 1974
    Date of Patent: December 21, 1976
    Assignee: General Motors Corporation
    Inventor: Roger L. Kaas
  • Patent number: 3991251
    Abstract: Disclosed is a method of preparing an asbestos diaphragm where alkali metal ions are provided from an aqueous alkaline solution within the fibrous asbestos diaphragm, the diaphragm is heated to form an alkali metal silicate layer on the asbestos fibers, and thereafter contacted with anolyte liquor.
    Type: Grant
    Filed: October 3, 1973
    Date of Patent: November 9, 1976
    Assignee: PPG Industries, Inc.
    Inventors: Robbie T. Foster, William B. Darlington, Malcolm Korach
  • Patent number: 3989864
    Abstract: A process for providing an abrasion resistant coating on the surface of a glass container by treating the container with a solution containing 0.5 to 10% by weight of phosphoric acid and less than 5% by weight of metal phosphate in an aqueous diluent, the temperature of the surface of the container being at least C, and thereafter applying a lubricious organic cold-end coating to the surface of the container.
    Type: Grant
    Filed: April 7, 1975
    Date of Patent: November 2, 1976
    Assignee: Imperial Chemical Industries Limited
    Inventors: David Gordon Hey, Kevin Thomas McAloon
  • Patent number: 3987220
    Abstract: This invention relates to a process for improving the vapor barrier properties of a shaped article having relatively poor vapor barrier characteristics, said article shaped from a polymer having a plurality of carboxylic acid salt groups formed by the reaction of pendant carboxylic acid groups and a cation which compises:Displacing at least a portion of the cations in said polymer by contacting the surface of said shaped article with an effective proportion of an acid having a sufficient degree of ionization and for a time to displace said cation, thereby generating pendant carboxylic acid groups;Coating the contacted surface of said shaped article with an organic polyisocyanate;Bonding said organic polyisocyanate to said shaped article by reacting the isocyanate groups with said pendant carboxylic acid groups; andApplying a coating having vapor barrier characteristics to said shaped article.
    Type: Grant
    Filed: March 24, 1975
    Date of Patent: October 19, 1976
    Assignee: Tee-Pak, Inc.
    Inventor: Douglas J. Bridgeford
  • Patent number: 3986073
    Abstract: A method of manufacturing a luminescent screen of a shadow mask color tube. The phosphor dots on the screen which are separated by a light-absorbing material are smaller than the apertures in the shadow mask. The light-absorbing layer is first provided on the window and the luminescent materials are then provided successively. The inner surface of the window is such that undulations having a spatial frequency from 5 to 50 cm.sup.-.sup.1 or, in other words, wavelengths between 0.2 cm and 0.02 cm, show a depth of less than 1 micron.
    Type: Grant
    Filed: August 11, 1972
    Date of Patent: October 12, 1976
    Assignee: U.S. Philips Corporation
    Inventors: Hans Dignus Duinker, Gerardus Antonius Wilhelmus Vermeulen
  • Patent number: 3984607
    Abstract: Polyurethane coated textile sheets are disclosed and a reversal process for their preparation, wherein the textile sheets are coated by means of a top coat solution with a polymer mixture comprisingI. 50 to 90% by weight, based on the total polymer, of a substantially linear polyurethane which is substantially free of reactive end groups and which has been prepared by a process which comprises reacting an organic dihyroxyl compound of molecular weight 500 to 4000 and an organic diol of molecular weight 60 to 450 with an aromatic diisocyanate,Ii. 0 to 50% by weight of a vinyl copolymer, andIii. 1 to 50% by weight of a diene graft copolymer,Said polymer mixture having been applied to a release substrate prior to said coating process.
    Type: Grant
    Filed: January 20, 1975
    Date of Patent: October 5, 1976
    Assignee: Bayer Aktiengesellschaft
    Inventors: Wilhelm Thoma, Bernd Quiring
  • Patent number: 3984608
    Abstract: A method is provided for treating ionomeric polymers so as to inhibit the tendency of the polymers to form films. A coating composition including the treated ionomeric polymer is suitable for coating glassware so as to provide glassware having improved resistance to abrasion. The ionomeric polymer coating on the glassware resists film formation when the coating is inadvertently applied to the interior surface of the glassware. The method includes the step of adding colloidal silica to an aqueous dispersion of an ionomeric polymer.
    Type: Grant
    Filed: April 17, 1974
    Date of Patent: October 5, 1976
    Assignee: Kerr Glass Manufacturing Corporation
    Inventor: Herman E. Opitz
  • Patent number: 3984589
    Abstract: In a low-pressure mercury vapor discharge lamp a method of applying a tin oxide coating to the inside wall of the lamp having a resistance per square of more than 10,000 Ohm to avoid blackening of the glass. This coating may be used in the aperture of a lamp for photo-copying purposes.
    Type: Grant
    Filed: October 21, 1974
    Date of Patent: October 5, 1976
    Assignee: U.S. Philips Corporation
    Inventors: Rein Willemse VAN DER Wolfe, Thomas Hendrik DE Vette
  • Patent number: 3983301
    Abstract: The present invention relates to film base material. A film of synthetic linear polyester has superimposed thereon a phenoxy resin of the formula ##SPC1##Wherein each of R.sub.1 to R.sub.7 is a hydrogen atom or a lower alkyl or cyclohexyl group, R.sub.8 is a hydrogen atom or an acyl radical of the formula ##EQU1## wherein m is 0 to 6, at least one of X, Y and Z is a chlorine or bromine atom or a cyano group, the other of X, Y and Z are each hydrogen atoms or bromine or chlorine atoms, n is at least 50 and from 50 to 100 % of the R.sub.8 groups are a said acyl residue. An improved adhesion between the film base material of this composition and a hydrophilic layer coated thereon is achieved.
    Type: Grant
    Filed: May 16, 1974
    Date of Patent: September 28, 1976
    Assignee: Ilford Limited
    Inventors: Robert Stanley Cook, Keith Reid Tatchell, Kenneth Archibald Cockerton