Patents Assigned to Nippon Electric Glass Co., Ltd.
  • Patent number: 11377385
    Abstract: A glass tube for sealing a metal includes a glass that contains, in terms of mass %, 50% or more of SiO2+B2O3, 0% to 10% of Al2O3, 3% to 20% of RO (R is an alkaline earth metal), and 11% to 22% of R?2O (R? is an alkali metal), and that has 10 ?l/g or less of an amount of CO2 emitted when heated from a room temperature to 1100° C.
    Type: Grant
    Filed: April 13, 2017
    Date of Patent: July 5, 2022
    Assignee: NIPPON ELECTRIC GLASS CO., LTD.
    Inventors: Tatsuya Goto, Kakumi Shiraishi, Kiyoyuki Okunaga, Koichi Hashimoto
  • Patent number: 11370684
    Abstract: Provided is a manufacturing method for a glass article, including: a pre-heating step (S1) of heating a transfer pipe (7); and a transfer step (S4) of allowing a molten glass to flow inside the transfer pipe (7) after the pre-heating step (S1). The transfer pipe (7) includes: a main body portion (8) having a tubular shape; and a flange portion (9a, 9b) formed at an end portion of the main body portion (8). The main body portion (8) is retained by a refractory (10). The pre-heating step (S1) includes an external force application step of applying an external force (F) to the transfer pipe (7) to extend the transfer pipe (7).
    Type: Grant
    Filed: November 29, 2018
    Date of Patent: June 28, 2022
    Assignee: NIPPON ELECTRIC GLASS CO., LTD.
    Inventors: Shusaku Tamamura, Shusuke Okamoto, Kazuyuki Tenyama
  • Patent number: 11365145
    Abstract: A method of manufacturing a polarizing glass sheet includes subjecting, while heating, a glass preform sheet containing metal halide particles to down-drawing, to thereby provide a glass member having stretched metal halide particles dispersed in an aligned manner in a glass matrix, and subjecting the glass member to reduction treatment to reduce the stretched metal halide particles, to thereby provide a polarizing glass sheet. A shape of the glass preform sheet during the down-drawing satisfies a relationship of the following expression: L1/W1?1.0 where L1 represents a length between a portion in which a width of the glass preform sheet has changed to 0.8 times an original width and a portion in which the width of the glass preform sheet has changed to 0.2 times the original width W0, and W1 represents a length equivalent to 0.5 times the original width W0 of the glass preform sheet.
    Type: Grant
    Filed: December 26, 2018
    Date of Patent: June 21, 2022
    Assignee: NIPPON ELECTRIC GLASS CO., LTD.
    Inventors: Kouichi Yabuuchi, Tomoaki Kawamura, Hirokazu Takeuchi
  • Publication number: 20220185722
    Abstract: A decorative glass article contains: in mol %, 10% to 70% of La2O3, 10% to 90% of Nb2O5, 0% to 40% of B2O3, and 0% to 50% of TiO2, wherein a refractive index is 2.0 or more and an Abbe number is 50 or less.
    Type: Application
    Filed: March 26, 2020
    Publication date: June 16, 2022
    Applicant: NIPPON ELECTRIC GLASS CO., LTD.
    Inventors: Naoki FUJITA, Shinsaku NISHIDA
  • Publication number: 20220169558
    Abstract: A decorative glass article is substantially free of lead oxide, and has a refractive index of 1.9 or more and an Abbe number of 42 or less.
    Type: Application
    Filed: March 18, 2020
    Publication date: June 2, 2022
    Applicant: NIPPON ELECTRIC GLASS CO., LTD.
    Inventors: Naoki FUJITA, Shinsaku NISHIDA, Tomoko ENOMOTO
  • Patent number: 11346652
    Abstract: In cutting a band-shaped glass film along a longitudinal direction thereof and evaluating linearity of an end side formed in association with the cutting to inspect quality of a cut band-shaped glass film, the following steps are performed: an imaging step of dividing the end side into a plurality of segments and imaging each of the plurality of segments; a linear approximation step of calculating an approximate straight line of the end side based on a plurality of points different from each other on the end side in each of a plurality of images obtained in the imaging step; a variation calculation step of calculating a variation value of the plurality of points based on the approximate straight line; and an evaluation step of evaluating the linearity of the end side based on a plurality of variation values respectively corresponding to the plurality of images.
    Type: Grant
    Filed: November 30, 2017
    Date of Patent: May 31, 2022
    Assignee: NIPPON ELECTRIC GLASS CO., LTD.
    Inventors: Kaoru Mitsugi, Kazunari Noguchi
  • Publication number: 20220135465
    Abstract: Devised is a glass which has high heat resistance and a low thermal expansion coefficient, and is excellent in productivity. A glass of the present invention includes as a glass composition, in terms of mol %, 55% to 80% of SiO2, 12% to 30% of Al2O3, 0% to 3% of B2O3, 0% to 1% of Li2O+Na2O+K2O, and 5% to 35% of MgO+CaO+SrO+BaO, and has a thermal expansion coefficient within a temperature range of from 30° C. to 380° C. of less than 40×10?7/° C.
    Type: Application
    Filed: January 14, 2022
    Publication date: May 5, 2022
    Applicant: Nippon Electric Glass Co., Ltd.
    Inventor: Atsuki SAITO
  • Patent number: 11318508
    Abstract: A cleaning apparatus for a glass sheet includes a housing in which a cleaning liquid is stored, a plurality of spindle cases fixed to the housing to face an internal space of the housing, a spindle rotatably held in each of the spindle cases to face an internal space of the each of the spindle cases, and a cleaning member mounted to a distal end portion of the spindle. The cleaning apparatus also includes a first supply path formed in the each of the spindle cases to supply the cleaning liquid in the internal space of the housing to the internal space of the each of the spindle cases, and a second supply path formed in the spindle to supply the cleaning liquid in the internal space of the each of the spindle cases to the cleaning member.
    Type: Grant
    Filed: September 12, 2018
    Date of Patent: May 3, 2022
    Assignee: NIPPON ELECTRIC GLASS CO., LTD.
    Inventor: Kaoru Mitsugi
  • Patent number: 11319237
    Abstract: Provided is a method that can manufacture a glass material having excellent homogeneity by containerless levitation. With a block (12) of glass raw material held levitated above a forming surface (10a) of a forming die (10) by jetting gas through a gas jet hole (10b) opening on the forming surface (10a), the block (12) of glass raw material is heated and melted by irradiation with laser beam, thus obtaining a molten glass, and the molten glass is then cooled to obtain a glass material. Control gas is jetted to the block (12) of glass raw material along a direction different from a direction of jetting of the levitation gas for use in levitating the block (12) of glass raw material or the molten glass.
    Type: Grant
    Filed: March 11, 2019
    Date of Patent: May 3, 2022
    Assignee: NIPPON ELECTRIC GLASS CO., LTD.
    Inventors: Tomoko Yamada, Fumio Sato
  • Patent number: 11322659
    Abstract: Provided are a method for manufacturing wavelength conversion members that enables manufacturing of wavelength conversion members having a high light extraction efficiency and suppression of material loss, a wavelength conversion member obtained by the method, and a light-emitting device.
    Type: Grant
    Filed: September 16, 2020
    Date of Patent: May 3, 2022
    Assignee: NIPPON ELECTRIC GLASS CO., LTD.
    Inventors: Tomomichi Kunimoto, Hideki Asano
  • Patent number: 11320099
    Abstract: Provided is a wavelength conversion member that can be adjusted in chromaticity readily and with high accuracy and a production method for the wavelength conversion member. A wavelength conversion member 1 having a first principal surface 1a and a second principal surface 1b opposed to each other includes a glass matrix 2 and phosphor particles 3 disposed in the glass matrix 2, wherein a concentration of the phosphor particles 3 in the first principal surface 1a is higher than a concentration of the phosphor particles 3 in a portion 20 ?m inward from the first principal surface 1a, a concentration of the phosphor particles 3 in the second principal surface 1b is lower than a concentration of the phosphor particles 3 in a portion 20 ?m inward from the second principal surface 1b, and the concentration of the phosphor particles 3 in the first principal surface 1a is higher than the concentration of the phosphor particles 3 in the second principal surface 1b.
    Type: Grant
    Filed: July 21, 2017
    Date of Patent: May 3, 2022
    Assignee: NIPPON ELECTRIC GLASS CO., LTD.
    Inventors: Hiroyuki Shimizu, Hideki Asano, Takashi Murata
  • Patent number: 11312654
    Abstract: Provided is a composition for a glass fiber which has a high elastic modulus and satisfactory productivity, and can facilitate the production of a fine-count glass fiber. The composition for a glass fiber of the present invention includes, as a glass composition expressed as a mass percent in terms of oxide, 50% to 70% of SiO2, 15% to 25% of Al2O3, 3% to 13% of MgO, 3% to 15% of CaO, and 0.5% to 5% of B2O3.
    Type: Grant
    Filed: November 16, 2017
    Date of Patent: April 26, 2022
    Assignee: NIPPON ELECTRIC GLASS CO., LTD.
    Inventors: Yuki Yokota, Toshikatsu Tanaka
  • Patent number: 11307336
    Abstract: A dielectric multilayer film-incorporated glass plate is disclosed that includes a glass plate and a dielectric multilayer film. The glass plate includes a corner surface located between at least one main surface and a side surface. The dielectric multilayer film includes a main surface covering portion that covers the main surface of the glass plate and a corner surface covering portion that covers the corner surface of the glass plate.
    Type: Grant
    Filed: December 11, 2017
    Date of Patent: April 19, 2022
    Assignee: Nippon Electric Glass Co., Ltd.
    Inventors: Keiichi Sahara, Tsutomu Imamura, Yasutaka Tanabe
  • Publication number: 20220098089
    Abstract: A glass powder contains, as a glass composition, TeO2 of 15 mol % to 65 mol %, MoO3 of 10 mol % to 60 mol %, and P2O5 of 1 mol % to 35 mol %, and is substantially free of PbO.
    Type: Application
    Filed: December 19, 2019
    Publication date: March 31, 2022
    Applicant: NIPPON ELECTRIC GLASS CO., LTD.
    Inventor: Toru SHIRAGAMI
  • Patent number: 11289703
    Abstract: Provided is a novel positive electrode active material for a sodium-ion secondary cell having a good discharge capacity. A positive electrode active material for a sodium-ion secondary cell, the positive electrode active material containing, in terms of % by mole of oxide, 8 to 55% Na2O, 10 to 70% NiO, 0 to 60% CrO+FeO+MnO+CoO, and 15 to 70% P2O5+SiO2+B2O3 and containing an amorphous phase.
    Type: Grant
    Filed: October 20, 2016
    Date of Patent: March 29, 2022
    Assignee: NIPPON ELECTRIC GLASS CO., LTD.
    Inventor: Hideo Yamauchi
  • Patent number: 11286198
    Abstract: An object of the present invention is to provide a less tinted LAS system crystallized glass. In the present invention, a content of each of V and Cr in the LAS system crystallized glass is 0 to 3 ppm and a content of each of Sc, La, Ce, Pr, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, Ac, Th, Pa, and U is 0 to 10 ppm.
    Type: Grant
    Filed: August 31, 2018
    Date of Patent: March 29, 2022
    Assignee: NIPPON ELECTRIC GLASS CO., LTD.
    Inventor: Yuki Yokota
  • Patent number: 11267746
    Abstract: A method of manufacturing a glass includes a conveying step of moving a conveyance sheet material that contacts a lower surface of a glass film, to thereby convey the glass film. The conveyance sheet material includes a first contact portion that contacts the lower surface of the glass film on an upstream side in a manufacture-related process step, a second contact portion that contacts the lower surface of the glass film on a downstream side in the manufacture-related process step, and a non-contact portion that is prevented from contacting the lower surface of the glass film. In this method, the manufacture-related process step includes subjecting the glass film to a predetermined process at a position corresponding to the non-contact portion between the first and second contact portions while simultaneously moving the first, second, and non-contact portions of the conveyance sheet material through the conveying step.
    Type: Grant
    Filed: February 22, 2018
    Date of Patent: March 8, 2022
    Assignee: NIPPON ELECTRIC GLASS CO., LTD.
    Inventors: Hiroki Mori, Yohei Kirihata
  • Patent number: 11261123
    Abstract: Devised is a glass which has high heat resistance and a low thermal expansion coefficient, and is excellent in productivity. A glass of the present invention includes as a glass composition, in terms of mol %, 55% to 80% of SiO2, 12% to 30% of Al2O3, 0% to 3% of B2O3, 0% to 1% of Li2O+Na2O+K2O, and 5% to 35% of MgO+CaO+SrO+BaO, and has a thermal expansion coefficient within a temperature range of from 30° C. to 380° C. of less than 40×10?7/° C.
    Type: Grant
    Filed: January 28, 2020
    Date of Patent: March 1, 2022
    Assignee: NIPPON ELECTRIC GLASS CO., LTD.
    Inventor: Atsuki Saito
  • Patent number: 11254862
    Abstract: Provided is a wavelength conversion member that is less decreased in luminescence intensity with time by irradiation with light of an LED or LD and a light emitting device using the wavelength conversion member. A wavelength conversion member is formed of an inorganic phosphor dispersed in a glass matrix, wherein the glass matrix contains, in % by mole, 30 to 85% SiO2, 4.3 to 20% B2O3, 0 to 25% Al2O3, 0 to 3% Li2O, 0 to 3% Na2O, 0 to 3% K2O, 0 to 3% Li2O+Na2O+K2O, 0 to 35% MgO, 0 to 35% CaO, 0 to 35% SrO, 0 to 35% BaO, 0.1 to 45% MgO+CaO+SrO+BaO, and 0 to 5% ZnO, and the inorganic phosphor is at least one selected from the group consisting of an oxide phosphor, a nitride phosphor, an oxynitride phosphor, a chloride phosphor, an oxychloride phosphor, a halide phosphor, an aluminate phosphor, and a halophosphate phosphor.
    Type: Grant
    Filed: June 8, 2017
    Date of Patent: February 22, 2022
    Assignee: NIPPON ELECTRIC GLASS CO., LTD.
    Inventors: Naoki Fujita, Takashi Murata
  • Patent number: 11247929
    Abstract: Provided is a sleeve for glass tube molding, the sleeve being capable of: preventing the weakening of clamping force between a metal tip and a metal holding fixture even if the distance between the metal tip and the metal holding fixture increases due to the thermal expansion of a sleeve shaft; and ensuring the coaxiality, on the sleeve shaft, of the metal tip, the metal holding fixture and a refractory tube. This sleeve for glass tube molding comprises: a sleeve shaft; a refractory tube into which the sleeve shaft is inserted in a coaxial manner; a metal tip which is at one end of the refractory tube, and is fixed to the tip of the sleeve shaft; and a metal holding fixture which, at the other end of the refractory tube, is slidably inserted in the sleeve shaft, and clamps and holds the sleeve shaft together with the metal tip.
    Type: Grant
    Filed: May 13, 2016
    Date of Patent: February 15, 2022
    Assignee: NIPPON ELECTRIC GLASS CO., LTD.
    Inventors: Masanori Wada, Kenichi Hoshiba