Patents Examined by Queenie Dehghan
  • Patent number: 9321670
    Abstract: An optical fiber preform that is used in a method in which a core rod that forms a core is inserted into a quartz tube that forms a cladding, and at the same time as they are fiber-drawn, the quartz tube and the core rod are formed into a single body, includes: a tapered portion that is formed by grinding an outer circumferential portion of a distal end portion of the quartz tube into a tapered shape; and a conical portion that is formed by welding a dummy tube that has substantially the same outer diameter as the outer diameter of a distal end portion of the tapered portion to the distal end portion of the tapered portion, and by applying heat to the dummy tube and stretching out the dummy tube, where the core rod is inserted inside the quartz tube.
    Type: Grant
    Filed: November 6, 2012
    Date of Patent: April 26, 2016
    Assignee: FUJIKURA LTD.
    Inventor: Kenji Okada
  • Patent number: 9309148
    Abstract: An area S (m2) of a facing surface of each of injectors which faces a glass ribbon is set so as to satisfy: S?(0.0116×P×Cg×T)/{?×F×?(Tgla4?Tinj4)}, wherein P is an output (ton/day) of the glass ribbon; Cg is a specific heat (J/(kg·° C.)) of the glass; T is an acceptable temperature drop (° C.); ? is radiation factor; F is a surface-to-surface view factor; ? is Boltzmann's constant; Tgla is a temperature (K) of the glass ribbon represented by K=(Tin+Tout)/2 where Tin and Tout are measured values of the glass ribbon at the inlet and outlet of the injector, respectively; and Tinj is a temperature (K) of the facing surface of the injector.
    Type: Grant
    Filed: January 10, 2014
    Date of Patent: April 12, 2016
    Inventors: Kuniaki Hiromatsu, Masanobu Shirai, Junichi Miyashita, Tomohiro Yonemichi, Takeo Endo
  • Patent number: 9309140
    Abstract: There is provided a system of an individual section machine (IS) having a blow side with a mold and a blow head, and a blank side, the system includes a P-Switch valve in fluid communication with an EPVB of the IS machine and with the P-Switch valve configured to control a valve pilot air supply to a predetermined pilot valve. When the P-Switch valve is activated, the blow side mold is set to an OPEN position and the associated blow head is set to an UP position. With the P-Switch valve of the system activated, the blow side machinery cannot be overridden from the blank side of the IS machine.
    Type: Grant
    Filed: December 13, 2012
    Date of Patent: April 12, 2016
    Assignee: Emhart Glass S.A.
    Inventors: Lancelot Hudson Miller, Sten Bergsten, Arne Stenholm, Eliseo Angelo Di Nitto, Nils-Goran Akerberg
  • Patent number: 9309141
    Abstract: Method of manufacturing an optical element capable of providing a satisfactory shape accuracy even where a plurality of optical elements are molded. By providing a protruding portion 12d to change the flow of molten glass drop GD for an optical element with a forming mold 10, it is possible to make the glass drop GD for an optical element flow along an optical surface transferring surface 12a in the vicinity of edge side close to the drop point of the glass drop GD for an optical element, among the optical surface transferring surfaces 12a. According to this, even where a plurality of glass lenses 100 are collectively molded, it is possible to transfer an optical function surface 101a of the glass lens 100 to each optical surface transferring surface 12a with a high accuracy and to collectively manufacture the glass lenses 100 with a satisfactory shape accuracy.
    Type: Grant
    Filed: September 16, 2011
    Date of Patent: April 12, 2016
    Assignee: Konica Minolta Advanced Layers, Inc.
    Inventor: Shuhei Ashida
  • Patent number: 9296637
    Abstract: A method, press station (12), and system (10) for forming glass sheets that are initially formed with an upwardly concave curved shape with end portions (86) and an intermediate portion (88) having straight line elements that are subsequently formed with curved shapes to provide curvature along transverse directions. The forming is performed by initially providing curvature to the straight line elements of the glass sheet end portions while the intermediate portion (88) still has the straight line elements. The glass sheet intermediate portion is subsequently formed to provide curvature to its straight line elements so the glass sheet has curvature in transverse directions.
    Type: Grant
    Filed: June 9, 2010
    Date of Patent: March 29, 2016
    Assignee: GLASSTECH, INC.
    Inventors: David B. Nitschke, Dean M. Nitschke, Mace L. Odneal, Ashoka G. Jinka
  • Patent number: 9278882
    Abstract: Provided is a method of producing porous glass having pores with a uniform pore diameter entirely, particularly in the case of phase-separated glass, including selectively removing a denatured layer formed on the surface of glass easily. The method of producing glass includes: forming phase-separated glass containing silicon oxide, boron oxide, and an alkali metal oxide; bringing an alkaline solution held by a porous supporting member into contact with the denatured layer formed on the surface of the phase-separated glass to remove the denatured layer; and immersing the phase-separated glass with the denatured layer removed therefrom in an acid solution to form pores in the phase-separated glass.
    Type: Grant
    Filed: May 20, 2011
    Date of Patent: March 8, 2016
    Assignee: Canon Kabushiki Kaisha
    Inventors: Kenji Takashima, Zuyi Zhang, Yoshinori Kotani
  • Patent number: 9272940
    Abstract: An ion transport membrane, a heat exchanger, and a recuperator are integrated with a float glass manufacturing process. Only feeds of fuel and air are necessary for producing hot oxygen for a melting furnace and a nitrogen-enriched stream to a float bath. The oxygen and nitrogen are produced on-site without requiring cryogenic distillation.
    Type: Grant
    Filed: December 27, 2013
    Date of Patent: March 1, 2016
    Assignee: L'Air Liquid Sociétë Anonyme Pour L'Ëtude Et L'Exploitation Des Procedes Georges Claude
    Inventors: Wei Huang, Youssef Joumani, Remi Pierre Tsiava, Bhadra S. Grover
  • Patent number: 9256017
    Abstract: An optical transmission medium bend working device that reduces bending loss of an optical transmission medium includes: an arc-discharge electrode that partially and sequentially heats a bend working area of a tape core wire in an up-down direction, the tape core wire extending in the up-down direction with a distal end thereof being located on a lower side, the bend working area being located above the distal end; a core wire holding unit that holds a portion of the tape core wire located above the bend working area; and a bending arm that applies force to the tape core wire in a state where the bend working area is heated to bend the tape core wire at the bend working area.
    Type: Grant
    Filed: December 19, 2011
    Date of Patent: February 9, 2016
    Assignee: TOMOEGAWA CO., LTD.
    Inventor: Kyoichi Sasaki
  • Patent number: 9221710
    Abstract: A glass fine particle synthesis burner comprising a glass raw material gas emission path for emitting glass raw material; a ring-shaped combustible gas emission path for emitting combustible gas arranged outside the glass raw material emission path; a ring-shaped combustion aiding gas emission path for emitting combustion aiding gas arranged outside the combustible gas emission path; and small diameter nozzles for emitting the combustion aiding gas within the combustible gas emission path. In a cross section of the glass fine particle synthesis burner formed by cleaving orthogonal to a central axis thereof, when the glass fine particle synthesis burner is divided into two regions by a predetermined straight line passing through a center of the glass fine particle synthesis burner, a total area of the small diameter nozzles in one of the regions is greater than a total area of the small diameter nozzles in the other region.
    Type: Grant
    Filed: December 16, 2013
    Date of Patent: December 29, 2015
    Assignee: Shin-Etsu Chemical Co., Ltd.
    Inventor: Yuhei Urata
  • Patent number: 9199877
    Abstract: A method for making a high quality optical fiber preform includes: thermally defusing the alkali metal element into the inner side of a silica glass pipe by heating the glass pipe from the outside by a heat source while vapors of alkali metal salt generated by heating an alkali metal salt is supplied to the inside of the glass pipe from an end thereof; collapsing the glass pipe for forming a core rod; and adding a cladding part around the circumference of the core rod. At the start of the thermal diffusion, the alkali metal salt is heated at a temperature for making the vapor pressure of the alkali metal salt to be 0.1 kPa or less, and thereafter the alkali metal salt is heated up to a temperature for making the vapor pressure of the alkali metal salt to be larger than 0.1 kPa.
    Type: Grant
    Filed: December 28, 2012
    Date of Patent: December 1, 2015
    Inventors: Tetsuya Haruna, Masaaki Hirano, Yoshiaki Tamura
  • Patent number: 9187361
    Abstract: A method of forming high strength glass fibers in a refractory-lined glass meter, products made there from and batch compositions suited for use in the method are disclosed. The glass composition for use in the method of the present invention is up to about 64-75 weight percent SiO2, 16-24 weight percent Al2O3, 8-12 weight percent MgO and 0.25-3 weight percent R2O, where R2O equals the sum of Li2O and Na2O, has a fiberizing temperature less than about 2650° F., and a ?T of at least 80° F. By using oxide-based refractory-lined furnaces the cost of production of glass fibers is substantially reduced in comparison with the cost of fibers produced using a platinum-lined melting furnace. High strength composite articles including the high strength glass fibers are also disclosed.
    Type: Grant
    Filed: March 13, 2009
    Date of Patent: November 17, 2015
    Assignee: OCV Intellectual Capital, LLC
    Inventors: Peter B. McGinnis, Douglas A. Hofmann
  • Patent number: 9181125
    Abstract: A method of coloring optical fibers during the optical fiber drawing that includes the steps of feeding a natural fiber coating material and a colorant to a mixer; mixing the natural fiber coating material and the colorant in the mixer to obtain a colored coating material; and supplying the colored coating material to a coating die. The feeding step includes exerting on the natural fiber coating a first gas pressure variable with at least one fiber drawing parameter; and exerting on the colorant a second gas pressure variable with at least one fiber drawing parameter.
    Type: Grant
    Filed: March 24, 2014
    Date of Patent: November 10, 2015
    Assignee: PRYSMIAN S.P.A.
    Inventors: Silvio Frigerio, Lidia Terruzzi, Giovanni Villani, Corrado Castoldi
  • Patent number: 9169154
    Abstract: A method of cutting chemically toughened glass which is chemically toughened in a chemical toughening process of creating compressive stress in the surface of glass by exchanging first alkali ions in the glass with second alkali ions. The method includes the steps of applying a paste on a portion of the chemically toughened glass that is to be cut, heating the paste, and cutting the chemically toughened glass along the portion on which the paste is applied. The paste contains alkali ions. The ion radius of the alkali ions in the paste is smaller than an ion radius of the second alkali ions which substitute the first ions in the chemical toughening process.
    Type: Grant
    Filed: January 2, 2014
    Date of Patent: October 27, 2015
    Inventors: Hoikwan Lee, Youngseok Lee, Jae Chang Lee, Jaeho Lee, Jihoon Lee, Seo-Yeong Cho, Jaemin Cha, Ho-Sam Choi
  • Patent number: 9156721
    Abstract: A method for cutting chemically strengthened glass is provided. The chemically strengthened glass includes a first stress layer, a second stress layer, and a tension layer sandwich between the first stress layer and the second stress layer. The method includes: using a green pulsed laser to cut the first stress layer, wherein the green pulsed laser includes a first green pulsed laser having femtosecond level and a second green pulsed laser having nanosecond level; using a ultraviolet pulsed laser to cut the tension layer, wherein the ultraviolet pulsed laser includes a first ultraviolet pulsed laser having femtosecond level and a second ultraviolet pulsed laser having nanosecond level; and using the green pulse layer to cut the second stress layer.
    Type: Grant
    Filed: December 24, 2013
    Date of Patent: October 13, 2015
    Inventors: Feng-Yuen Dai, Hung-Lien Yeh, Chung-Pei Wang
  • Patent number: 9159548
    Abstract: A method for using a system, which includes a film formation apparatus for forming a high-dielectric constant thin film on target substrates together and a gas supply apparatus for supplying a process gas. The method includes a preparatory stage of determining a set pressure range of pressure inside a vaporizing chamber for a liquid material cooled at a set temperature. The preparatory stage includes obtaining a first limit value of pressure at which vaporization of the liquid material starts being inhibited due to an increase in the pressure, obtaining a second limit value of pressure at which vaporization of the liquid material starts being unstable and the pressure starts pulsating movement due to a decrease in the pressure, and determining the set pressure range to be defined by an upper limit lower than the first limit value and a lower limit higher than the second limit value.
    Type: Grant
    Filed: November 22, 2013
    Date of Patent: October 13, 2015
    Inventors: Tsuneyuki Okabe, Hitoshi Katoh, Junya Hiraka, Hiroyuki Kikuchi
  • Patent number: 9145327
    Abstract: A method for forming a lubricant layer on the surface of a glass and a method for manufacturing a glass using the same prevents scratches from occurring at the surface of a glass and decreases corrosion of glass manufacturing equipment. The method for manufacturing a glass includes forming a glass, supplying SO2 gas and a SO2 gas oxidation catalyst to the glass under an oxidation environment to form a lubricant layer at the lower surface of the glass, and annealing the glass.
    Type: Grant
    Filed: May 21, 2013
    Date of Patent: September 29, 2015
    Assignee: LG CHEM, LTD.
    Inventors: Han-Kook Kim, Jung-Sik Bang, Duk-Sik Ha, Kyoung-Hoon Min, Du-Sun Hwang
  • Patent number: 9133571
    Abstract: A method of forming a needled fiberglass glass insulation product is provided. The formation of the needled insulation product may be conducted in a process in which the fibers are formed, a binder is sprayed onto the fibers, the fibers are collected and formed into a fiberglass pack, the fiberglass pack is passed through the oven, and at least partially cured insulation blanket is passed through a needling apparatus. The reduction in thickness and increased density caused by the needling process permits the production of lower thickness and high density insulation products.
    Type: Grant
    Filed: December 19, 2013
    Date of Patent: September 15, 2015
    Assignee: Owens Corning Intellectual Capital, LLC
    Inventors: Jacob Chacko, Robert P. Collier, Edward A. Martine
  • Patent number: 9115018
    Abstract: In a known drawing method for producing a cylindrical component from quartz glass, a quartz glass strand (2) is continuously drawn off from a softened quartz glass composition (13) vertically downwards in the drawing direction (3), a piece (15) with a weight G is detached from the free end of the strand at a time t1 and the cylindrical component is produced from the piece (15). When the piece (15) is detached, there may be a sudden reduction in weight, which leads to fluctuations in the thawing-off control. To counteract this, it is proposed according to the invention that a weight compensating force which acts counter to the drawing direction (3), increases over time and completely or partially compensates for the weight G of the piece (15), is applied to the piece to be detached at a time t0 before t1.
    Type: Grant
    Filed: June 29, 2011
    Date of Patent: August 25, 2015
    Assignee: Heraeus Quarzglas GmbH & Co. KG
    Inventors: Christian Neumann, Boris Gromann, Lothar Huefner, Heinz Bauscher
  • Patent number: 9102561
    Abstract: An amorphous alloy contains 54 at % or more and 79 at % or less Re, 8 at % or more and 28 at % or less Ir, and 11 at % or more and 18 at % or less Nb. A molding die includes a release film composed of the amorphous alloy. A method for producing an optical element, the method including press-molding a glass preform with the molding die.
    Type: Grant
    Filed: August 21, 2013
    Date of Patent: August 11, 2015
    Assignee: Canon Kabushiki Kaisha
    Inventors: Hirotaka Fukushima, Satoko Midorikawa
  • Patent number: 9096454
    Abstract: A method of manufacturing a sheet glass includes: a re-draw process forming a sheet glass by, heating and softening a glass preform manufactured by float method, and extending the glass preform to a desirable plate thickness. An extension direction in which the glass preform is extended by the re-draw process is 90 degrees with respect to a direction in which molten glass is fed in the float method.
    Type: Grant
    Filed: March 14, 2014
    Date of Patent: August 4, 2015
    Inventors: Kousuke Nakao, Toshiyuki Asai