Patents Assigned to Corning
  • Strengthening glass by ion exchange
    Patent number: 5674790
    Abstract: A method of strengthening a glass article by developing compressive stress in a surface layer on the article through an exchange of alkali metal ions in the surface layer at an elevated temperature below the glass strain point, the step of minimizing stress relaxation by carrying out the ion exchange in a glass essentially free from non-bridging oxygen atoms. Glasses having particular utility contain alumina in their compositions in such amount that the number of aluminum atoms in a glass are at least equal to the number of alkali metal ions, or contain both alumina and boric oxide in such amounts that the formula ##EQU1## is satisfied.
    Type: Grant
    Filed: December 15, 1995
    Date of Patent: October 7, 1997
    Assignee: Corning Incorporated
    Inventor: Roger J. Araujo
  • Hollow mineral fibers using rotary process
    Patent number: 5674307
    Abstract: In a method for producing hollow mineral fibers such as glass fibers, molten glass is supplied to a rotating glass spinner having a peripheral wall. The spinner rotates so that molten glass is centrifuged through a first tube positioned at least mostly inside the peripheral wall of the spinner in an orifice to form fibers. Gas is introduced into the interior of the molten glass to form hollow glass fibers. A second tube positioned inside the first tube includes an inlet in the wall of the first tube, wherein the orifice and first tube are adapted to allow gas to be introduced through the inlet from outside the peripheral wall. The hollow glass fibers are then collected to form a product such as a mat.
    Type: Grant
    Filed: December 12, 1995
    Date of Patent: October 7, 1997
    Assignee: Owens-Corning Fiberglas Technology, Inc.
    Inventors: Larry J. Huey, David C. K. Lin
  • Glass fiber insulation product
    Patent number: 5672429
    Abstract: A glass fiber insulation product includes irregularly-shaped glass fibers of two different glasses having differing coefficients of thermal expansion, with the irregularly-shaped dual-glass fibers exhibiting a substantially uniform volume filling nature, and providing improved recovery and thermal conductivity abilities even in the absence of a binder material.
    Type: Grant
    Filed: January 17, 1996
    Date of Patent: September 30, 1997
    Assignee: Owens-Corning Fiberglas Technology, Inc.
    Inventors: Clarke Berdan II, Ronald A. Houpt, Russell M. Potter, David P. Aschenbeck
  • Process for the industrial manufacture of a cycloalkylsilane or polyorganosiloxane
    Patent number: 5670688
    Abstract: This invention relates to a process for the manufacture of a silane or polyorganosiloxane containing a cycloalkyl substituent by hydrogenation of a silane or polyorganosiloxane containing at least one aromatic hydrocarbon substituent in the presence of a Raney nickel catalyst without a solvent.
    Type: Grant
    Filed: December 19, 1996
    Date of Patent: September 23, 1997
    Assignee: Dow Corning Corporation
    Inventors: Paul Charles Dinh, Binh Thanh Nguyen
  • Foamable siloxane compositions and silicone foams prepared therefrom
    Patent number: 5670556
    Abstract: Foamable organosiloxane compositions which yield, upon cure, silicone foams having low density and decrease friability, comprising (A) a siloxane base polymer system which is a combination of a high molecular weight hydroxyl-group containing siloxane polymer and a low molecular weight hydroxyl-group containing siloxane polymer; (B) a silicon-containing crosslinker for the siloxane base polymer system, wherein the crosslinker contains at least two --SiH groups per molecule; (C) a platinum group catalyst; and optionally (E) a blowing agent; and silicone foams prepared therefrom. A method of weather-stripping a door or window using the silicone foam so prepared.
    Type: Grant
    Filed: December 16, 1996
    Date of Patent: September 23, 1997
    Assignee: Dow Corning Corporation
    Inventors: Brian Paul Loiselle, Lawrence Joseph Rapson
  • Light green glassware
    Patent number: 5670433
    Abstract: A transparent glass exhibiting a light green color, the glass, as analyzed, consisting essentially of 40-200 ppm chromium oxide in a soda lime silicate base glass that contains as impurities no more than about 400 ppm MnO.sub.2 and 500 ppm Fe.sub.2 O.sub.3.
    Type: Grant
    Filed: January 2, 1997
    Date of Patent: September 23, 1997
    Assignee: Corning Incorporated
    Inventor: W. Duane Amundson, Jr.
  • Method of making a pumpable, stable polydiorganosiloxane-silica foundation mixture and room temperature curing sealant
    Patent number: 5670560
    Abstract: A process of making a pumpable, stable, polydiorganosiloxane-silica foundation mixture by mixing and heating a polydiorganosiloxane, a reinforcing silica filler, and a diol surface modifying agent at >50.degree. C. to <180.degree. C. using 0.05 to 0.5 parts by weight of the diol per one part by weight of the silica. The foundation mixture can be used to make RTV silicone sealant compositions which are non-sag.
    Type: Grant
    Filed: November 29, 1995
    Date of Patent: September 23, 1997
    Assignee: Dow Corning Corporation
    Inventors: Loren Dale Lower, Sherwood Spells
  • Foamable siloxane compositions and silicone foams prepared therefrom
    Patent number: 5670555
    Abstract: Foamable organosiloxane compositions which yield, upon cure, silicone foams having low density and decreased friability, comprising (A) a siloxane base polymer system which is a combination of a high molecular weight hydroxyl-group containing siloxane polymer and a low molecular weight hydroxyl-group containing siloxane polymer; (B) a silicon-containing crosslinker for the siloxane base polymer system, wherein the crosslinker contains at least two -SiH groups per molecule; (C) a platinum group catalyst; (D) a silicone resin copolymer; and optionally (E) a blowing agent; and silicone foams prepared therefrom. A method of weather-stripping a door or window using a silicone foam so prepared.
    Type: Grant
    Filed: December 17, 1996
    Date of Patent: September 23, 1997
    Assignee: Dow Corning Corporation
    Inventors: Brian Paul Loiselle, Lawrence Joseph Rapson
  • Alkyl substituted siloxanes and alkyl substituted polyether fluids
    Patent number: 5670686
    Abstract: New alkyl substituted siloxanes and alkyl substituted polyether fluids are prepared by reacting an unsaturated alkyl, a aralkyl or ether with alkylhydrido siloxanes such as (i) comonomers RSi(OSiMe.sub.2 H).sub.3, (ii) oligomers (HMe.sub.2 SiO).sub.2 --Si(R)--O--Si(R)--(OSiMe.sub.2 H).sub.2, and (iii) higher molecular weight siloxane species RSi?(OSiMe.sub.2).sub.x OSiMe.sub.2 H!.sub.3 and ?HMe.sub.2 SiO(Me.sub.2 SiO).sub.x !.sub.2 Si(R)O(R)Si?(OSiMe.sub.2).sub.x OSiMe.sub.2 H!.sub.2. R is a C.sub.2 to C.sub.18 straight-chain or branched-chain alkyl substituent.
    Type: Grant
    Filed: August 13, 1996
    Date of Patent: September 23, 1997
    Assignee: Dow Corning Corporation
    Inventors: Vicky Sue Cobb, Gary Edward LeGrow
  • Particulate foam control agents and their use
    Patent number: 5668101
    Abstract: A method of providing a foam control agent with 1 to 30 parts of a silicone antifoam and 70 to 99 parts of a zeolite carrier, with the ability to release some of the antifoam within 10 minutes of being dispersed in an aqueous surfactant solution, by depositing 5 to 70% of the antifoam of an organopolysiloxane polyoxyalkylene copolymer, onto the zeolite carrier not later than depositing the silicone antifoam. Also claimed is the use of the copolymer to achieve that end and compositions where the antifoam is branched or high viscosity. Also claimed is encapsulated agents.
    Type: Grant
    Filed: July 18, 1994
    Date of Patent: September 16, 1997
    Assignee: Dow Corning S. A.
    Inventors: Leonidas Kolaitis, Bertrand Louis Julien Lenoble
  • High purity fused silica having high resistance to optical damage
    Patent number: 5668067
    Abstract: The invention relates to the production of high purity fused silica glass which is highly resistant to optical damage by ultraviolet radiation in the laser wavelength of about 300 nm or shorter. In particular, this invention relates to a fused silica optical member or blank which exhibits substantially no optical damage up to 10.sup.7 pulses (350 mJ/cm.sup.2) at the KrF laser wavelength region of about 248 nm, and at the ArF laser wavelength region of about 193 nm.
    Type: Grant
    Filed: August 19, 1996
    Date of Patent: September 16, 1997
    Assignee: Corning Incorporated
    Inventors: Roger J. Araujo, Nicholas F. Borrelli, Christine L. Hoaglin, Charlene Smith
  • Low reflectivity fiber bragg grating with rectangular reflection function
    Patent number: 5668901
    Abstract: Fiber Bragg gratings of low reflectivity are given a squared reflectivity function in the form of a tophat configuration having a flat top and lacking undesirable side lobes. Such a reflectivity function for a fiber Bragg grating is achieved by interfering a diffracted beam with a plane wavefront beam so as to impose a sinc function on the resulting interference pattern that imprints the grating on an optical fiber.
    Type: Grant
    Filed: February 14, 1996
    Date of Patent: September 16, 1997
    Assignee: Corning Incorporated
    Inventors: Donald B. Keck, Robert A. Modavis
  • Active noise control using piezoelectric sensors and actuators
    Patent number: 5668744
    Abstract: A method for reducing noise generated by the operation of a noise-producing machine includes sensing the noise of the machine with a piezoelectric sensor, sending an activation signal, responsive to the sensed noise of the machine, to activate a piezoelectric actuator to reduce the noise of the machine, where the piezoelectric actuator is independent of a wave guide. Further, a parameter of the machine indicative of the speed of the machine is sensed with a second sensor, and the activation signal is corrected, responsive to the sensed parameter of the machine, to optimize the noise reduction of the piezoelectric material.
    Type: Grant
    Filed: May 5, 1995
    Date of Patent: September 16, 1997
    Assignee: Owens-Corning Fiberglas Technology Inc.
    Inventors: Vijay K. Varadan, Vasundara V. Varadan, Xiao-Qi Bao, Kenneth B. Carney, John L. Olinger, Fred S. Coffey
  • Polyisobutylene polymers having acrylic functionality
    Patent number: 5665823
    Abstract: The present invention relates to a method for preparing an acrylic-functional polyisobutylene polymer or copolymer, said method comprising reacting a polyisobutylene polymer or copolymer which contains at least one carbon-bonded silanol group in its molecule with a silane having both an acrylic-containing group and a silicon-bonded hydrolyzable group in its molecule.
    Type: Grant
    Filed: August 30, 1996
    Date of Patent: September 9, 1997
    Assignee: Dow Corning Corporation
    Inventors: Anil Kumar Saxena, Toshio Suzuki
  • Acryl-functional polybutylene
    Patent number: 5665828
    Abstract: The invention relates to a polybutylene polymer or oligomer which contains in its molecule at least one acryl group, said polybutylene being prepared by reacting(A) an anhydride-functional polybutylene, or derivative thereof, with(B) an acryl-functional compound having at least one hydroxyl-containing group, chlorine, isocyanate group, epoxy group or amine group in its molecule.
    Type: Grant
    Filed: October 31, 1996
    Date of Patent: September 9, 1997
    Assignee: Dow Corning Corporation
    Inventor: Kenneth Michael Lee
  • Method for controlling cure initiation and curing times of platinum group metal curing fluorosilicone compositions
    Patent number: 5665794
    Abstract: A method for controlling cure initiation and curing time of a platinum group metal curable fluorosilicone composition. The method comprises in a platinum group metal curable fluorosilicone composition comprising a cross-linker mixture comprising an alkylhydrogensiloxane and a dialkylhydrogen perfluoroalkylethylsiloxane controlling the weight ratio of the alkylhydrogensiloxane to dialkylhydrogen perfluoroalkylethylsiloxane in the mixture within a range of about 0.1:1 to 9:1 to control the cure initiation and curing time of the composition.
    Type: Grant
    Filed: May 20, 1996
    Date of Patent: September 9, 1997
    Assignee: Dow Corning Corporation
    Inventors: Myron Timothy Maxson, Lee Walter Miller
  • Method for the continuous preparation of organopolysiloxane emulsions
    Patent number: 5665796
    Abstract: Method and apparatus for preparing uniform highly dispersed emulsions by using a low drive power and without pressurization, making possible continuous mass production of uniform organopolysiloxane emulsions. An organopolysiloxane, water and a emulsifying agent, are continuously fed across a first-stage shearing and stirring mechanism and a second-stage shearing and stirring mechanism. The first-stage mechanism is a stator and turbine-type rotor whose blades are slanted obliquely from the radial direction when viewed from the axial direction. The second-stage mechanism is a stator and turbine-type rotor whose blades describe spiral curves with respect to the axial direction. The two mechanisms are arranged serially and separated from one another by a relaxation zone.
    Type: Grant
    Filed: February 5, 1996
    Date of Patent: September 9, 1997
    Assignee: Dow Corning Toray Silicone Co., Ltd.
    Inventors: Hidehiko Hosokawa, Junichi Maeshima, Fumitaka Suto
  • Raisable platform for apparatus for paying out an insulation support sheet
    Patent number: 5664740
    Abstract: An apparatus for providing a roof structure of the type has a plurality of purlins spaced apart from one another in a parallel arrangement. The space between the vertical portions of adjacent purlins defines an insulation cavity which is generally rectangular in cross-sectional shape. The apparatus includes a carriage movable in a first direction along the length of the purlins for paying out a support sheet for support of insulation material as the carriage travels along the length of the purlins. The apparatus also includes a platform attached to the carriage and extending in the direction opposite the first direction and placed in the insulation cavity. The platform is mounted on the carriage by two pairs of hinges for vertical movement.
    Type: Grant
    Filed: September 29, 1995
    Date of Patent: September 9, 1997
    Assignee: Owens-Corning Fiberglas Technology Inc.
    Inventors: Robert J. Alderman, James E. Taylor
  • Room temperature curing silicone elastomer composition
    Patent number: 5665805
    Abstract: A room temperature curing silicone elastomer composition with superior workability before curing which forms a silicone elastomer of a low modulus and high elongation after curing. A room temperature curing silicone elastomer composition prepared from a diorganopolysiloxane having both terminals of the molecular chains blocked by silanol groups, a diorganopolysiloxane having one terminal of the molecular chain blocked by a silanol group and the other terminal blocked by a trialkylsiloxy group, (B) an organosilane, (C) an organopolysiloxane resin, (D) a curing catalyst and (E) a higher fatty acid.
    Type: Grant
    Filed: November 8, 1996
    Date of Patent: September 9, 1997
    Assignee: Dow Corning Toray Silicone Co., Ltd.
    Inventors: Hidekatsu Hatanaka, Seiji Hori
  • Method for controlling secondary foam during glass melting
    Patent number: 5665137
    Abstract: A method for controlling secondary foam in a glass melting process is provided in which an oxidizing agent is added to a second melt region (32) of a glass furnace (14) where secondary foam (52) is formed. The oxidizing agent may be supplied directly to the second melt region (32) or may be added to the molten glass composition (46) with the batch raw materials (44) in a first melt region (30). When added directly, the oxidizing agent is preferably an oxidizing gas. When added with the batch materials (44), the oxidizing agent is a high temperature oxidizing agent which is inactive in the first melt region (30) yet active in the second melt region (32).
    Type: Grant
    Filed: August 15, 1995
    Date of Patent: September 9, 1997
    Assignee: Owens-Corning Fiberglas Technology, Inc.
    Inventor: Jianzhong Huang