Patents Assigned to NGK Insulators
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Patent number: 10734685Abstract: Provided is a highly reliable nickel-zinc battery including a separator exhibiting hydroxide ion conductivity and water impermeability. The nickel-zinc battery includes a positive electrode containing nickel hydroxide and/or nickel oxyhydroxide; a positive-electrode electrolytic solution in which the positive electrode is immersed, the electrolytic solution containing an alkali metal hydroxide; a negative electrode containing zinc and/or zinc oxide; a negative-electrode electrolytic solution in which the negative electrode is immersed, the electrolytic solution containing an alkali metal hydroxide; a hermetic container accommodating the positive electrode, the positive-electrode electrolytic solution, the negative electrode, and the negative-electrode electrolytic solution; and the separator exhibiting hydroxide ion conductivity and water impermeability and disposed in the hermetic container so as to separate a positive-electrode chamber from a negative-electrode chamber.Type: GrantFiled: February 7, 2019Date of Patent: August 4, 2020Assignee: NGK Insulators, Ltd.Inventors: Hiroshi Hayashi, Naohito Yamada, Kenshin Kitoh
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Patent number: 10730804Abstract: A first circumferential wall disposed in a circumference of partition walls has no interface with the outermost circumference partition wall in a circumferential portion constituted by the partition walls whose wall thickness is larger than that of a central portion constituted by the partition walls in a central region. A maximum thickness of a total of the first circumferential wall and a second circumferential wall disposed to surround an outer side of the first circumferential wall is 1.2-3.0 mm, a difference between the maximum thickness and a minimum thickness of the total is 0.2-1.5 mm, and there is satisfied a relation, 0.5?(TB?TA)×SB/SA×100(%)?9.0 in which TB and TA indicate average thicknesses (?m) of the partition walls in the circumferential and central portion respectively, and SB and SA indicate areas (cm2) of the circumferential portion and the honeycomb structure in the cross section respectively.Type: GrantFiled: March 1, 2018Date of Patent: August 4, 2020Assignee: NGK Insulators, Ltd.Inventor: Kazuya Mori
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Patent number: 10734619Abstract: A battery device may include a battery frame, and a battery module disposed on the battery frame. The battery frame may include a base member, a slide base being disposed on an upper surface of the base member and being formed in a rectangular shape defined by a pair of first sides extending in a first direction and a pair of second sides extending in a second direction in a plan view, a plurality of metal springs being mounted on an upper surface of the slide base at intervals along the first direction of the slide base, and being extensible in a vertical direction, and a support plate being connected to upper sides of the plurality of springs and supporting the battery module on an upper surface of the support plate.Type: GrantFiled: August 21, 2018Date of Patent: August 4, 2020Assignee: NGK Insulators, Ltd.Inventors: Hiroyuki Nakano, Kenta Asano
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Patent number: 10722877Abstract: A honeycomb structure includes a pillar-shaped honeycomb structure body having porous partition walls, wherein the partition walls have projecting portions, the projecting portions include specific projecting portions in which side surfaces have a divergent shape inclined at an inclination angle of 40 to 70°, a relation of 0.04?H/A?0.40 is satisfied, a relation of 0.04?H1/A?0.38 is satisfied, the height H of the specific projecting portion and the height H1 of the hem satisfy a relation of H1<H, and a ratio of a total number of the specific projecting portions is 2.5% or more.Type: GrantFiled: March 15, 2018Date of Patent: July 28, 2020Assignee: NGK Insulators, Ltd.Inventor: Takayuki Ogata
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Publication number: 20200230588Abstract: A honeycomb structure includes a pillar-shaped honeycomb structure body having porous partition walls surrounding a plurality of cells which extend from a first to a second end face and which form flow channels of a fluid, and a circumferential wall enclosing the partition walls, wherein, specific cell of the cells is provided with a pair of projection which projects into the cell from the partition wall, the projection projects, in at least a pair of opposed partition walls among the partition walls constituting the cell, into the cell from a first and a second side, and which is provided continuously in a direction the cell extends, and in the case where the width of a top part of the projection is denoted by W1, and the width of a bottom part of the projection is denoted by W2, W1>W2 holds, and W2/W1 is 0.5 to 0.9.Type: ApplicationFiled: January 10, 2020Publication date: July 23, 2020Applicant: NGK Insulators, Ltd.Inventors: Yuki TAKAMURO, Takashi Kinoshita
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Patent number: 10717679Abstract: There is provided a platy zinc oxide sintered compact containing 0.80 wt % or less at least one first dopant element selected from the group consisting of Al, Ga and In, the balance consisting essentially of ZnO and optionally at least one second dopant element selected from the group consisting of Br, Cl, F, Sn, Y, Pr, Ge, B, Sc, Si, Ti, Zr, Hf, Mn, Ta, W, Cu, Ni, Cr, La, Gd, Bi, Ce, Sr and Ba, the second dopant element being optional component, wherein the (002)-plane orientation in the plate surface is 60% or more. The zinc oxide sintered compact of the present invention has excellent properties such as high orientation in addition to transparency and conductivity.Type: GrantFiled: January 30, 2017Date of Patent: July 21, 2020Assignee: NGK Insulators, Ltd.Inventors: Sota Okochi, Jun Yoshikawa, Koichi Kondo
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Patent number: 10720746Abstract: An optical element includes an optical waveguide layer. The optical waveguide includes a periodic structure of grooves. The optical waveguide layer has a layer-thickness equal to or greater than 1.5 ?m and is made of material selected from a group consisting of Ta2O5, Al2O3, LiNbO3, LiTaO3, AlN, GaN, SiC, and Yttrium aluminum garnet (YAG). (D/0.5?)?2.5 is satisfied where D indicates the depth of groove; and ? indicates the pitch of the arranged grooves in the periodic structure. The unit of ? is identical to the unit of D.Type: GrantFiled: May 31, 2019Date of Patent: July 21, 2020Assignee: NGK Insulators, Ltd.Inventors: Kousuke Niwa, Jungo Kondou, Shoichiro Yamaguchi, Keiichiro Asai
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Patent number: 10710324Abstract: A manufacturing method of a honeycomb structure forming die includes a linear slit forming step of forming, in a kneaded material discharging surface of a die substrate, a plurality of linear slits which are straight from one end to the other end on the kneaded material discharging surface, a slit sealing material disposing step of disposing a slit sealing material in parts of the plurality of linear slits, and a back hole forming step of forming back holes to introduce a kneaded material, in a kneaded material introducing surface of the die substrate which is present on a side opposite to the kneaded material discharging surface.Type: GrantFiled: January 25, 2017Date of Patent: July 14, 2020Assignee: NGK Insulators, Ltd.Inventors: Toshihiro Hirakawa, Toshio Yamada, Yukio Miyairi
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Patent number: 10710062Abstract: A honeycomb structure includes a pillar-shaped honeycomb structure body having porous partition walls, wherein the partition walls have projecting portions, a shape of each cell is polygonal, in the polygonal cell, the projecting portions are disposed on two sides extending from a corner of the cell, respectively, the projecting portions are non-uniformly arranged, a relation of Formula (1) is satisfied, and a ratio of a total number of the corners is 2.5% or more: Formula (1): 1/(N+1)<A/L.Type: GrantFiled: March 15, 2018Date of Patent: July 14, 2020Assignee: NGK Insulators, Ltd.Inventor: Takayuki Ogata
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Publication number: 20200220239Abstract: A heat pipe disclosed herein may include a tubular body sealing a working fluid therein; and a wick disposed on at least a part of inside of the tubular body. The tubular body may include a ceramic portion constituted of a ceramic material. An axial length of the ceramic portion may be equal to or greater than L/2, where L is an axial length of the tubular body.Type: ApplicationFiled: March 19, 2020Publication date: July 9, 2020Applicant: NGK Insulators, Ltd.Inventors: Toshikatsu KASHIWAYA, Mikio TANAKA, Hiroki ABE
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Patent number: 10702822Abstract: A honeycomb filter includes a plugged honeycomb structure body which has cell rows arranged along one direction in a cross section of the honeycomb structure body and including a first cell row constituted of at least one of an inflow cell and an outflow cell, and a through-cell, and a second cell row including no through-cells. A width P1 (mm) of the first cell row, a width P2 (mm) of the second cell and a curvature radius R of a curved shape of corner portions of a polygonal shape of each cell satisfy relations of Equations (1) and (2) below: Equation (1): 2?100?(P1/P2×100)?50, and Equation (2): 0.4?(R/1000)/((P1+P2)/2)×100?20.Type: GrantFiled: April 11, 2018Date of Patent: July 7, 2020Assignee: NGK Insulators, Ltd.Inventors: Yasushi Kato, Takahiro Kondo
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Patent number: 10707373Abstract: There is provided a self-supporting polycrystalline gallium nitride substrate having excellent characteristics such as high luminous efficiency and high conversion efficiency when used for devices, such as light emitting devices and solar cells. The self-supporting polycrystalline gallium nitride substrate is composed of gallium nitride-based single crystal grains having a specific crystal orientation in a direction approximately normal to the substrate, and has a top surface and a bottom surface. The crystal orientations of individual gallium nitride-based single crystal grains as determined from inverse pole figure mapping by electron backscatter diffraction (EBSD) analysis on the top surface are distributed at various tilt angles from the specific crystal orientation, in which the average tilt angle thereof is 0.1° or more and less than 1° and the cross-sectional average diameter DT of the gallium nitride-based single crystal grains at the outermost surface exposed on the top surface is 10 ?m or more.Type: GrantFiled: August 9, 2018Date of Patent: July 7, 2020Assignee: NGK Insulators, Ltd.Inventors: Morimichi Watanabe, Kei Sato, Yoshitaka Kuraoka, Katsuhiro Imai, Tsutomu Nanataki
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Patent number: 10703697Abstract: An organic compound refinement method for refining a specific organic compound which is a target compound from at least two types of organic compounds. The method includes separating the target compound from an organic compound other than the target compound while the at least two types of organic compounds are irradiated with light at an infrared absorption wavelength of a specific functional group that is not contained in the target compound but is contained in the organic compound other than the target compound, or separating the target compound from an organic compound other than the target compound while the at least two types of organic compounds are irradiated with light at an infrared absorption wavelength of a specific functional group that is contained in the target compound but is not contained in the organic compound other than the target compound.Type: GrantFiled: February 14, 2019Date of Patent: July 7, 2020Assignee: NGK Insulators, Ltd.Inventors: Kousuke Niwa, Hiroaki Isobe
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Publication number: 20200214130Abstract: A connection structure for a wiring substrate and a flexible substrate including a wiring substrate and a flexible substrate, in which the wiring substrate includes an insulating member, conductor layer, and ground layer, the flexible substrate includes an insulating sheet and metal film, and the metal film includes a signal line pad joined to the conductor layer via a joining material when viewed from the back surface of the flexible substrate. When viewed from behind the flexible substrate, there is an overlap region where the signal line pad and conductor layer overlap. In a cross-section when the overlap region is cut in a direction perpendicular to a signal transmission direction, in a case where a width of the signal line pad including the overlap region is W, and a width of the conductor layer including the overlap region is W0, the connection structure satisfies W0<W.Type: ApplicationFiled: March 3, 2020Publication date: July 2, 2020Applicants: NGK Electronics Devices, Inc., NGK Insulators, Ltd.Inventors: Takashi KAWAMURA, Masato ISHIZAKI, Naoki GOTOU
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Publication number: 20200212289Abstract: Provided is a chip component manufacturing method which enables a plurality of chip pieces to be handled while being pasted to a sheet, and in which it is possible to apply at least a surface treatment to a plurality of chip pieces while being pasted to a sheet. This chip component manufacturing method comprises: a step for retaining a green sheet or the like on a carrier sheet; a step for cutting, together with a portion of the carrier sheet, the green sheet or the like retained on the carrier sheet; a step for removing, together with a portion of the carrier sheet, at least a dummy portion of the green sheet or the like that has been cut, so as to leave a plurality of chip pieces on the carrier sheet; and a step for applying at least a surface treatment to lateral surface portions of the plurality of chip pieces that have become exposed due to the removing while the plurality of chip pieces are being retained on the carrier sheet.Type: ApplicationFiled: March 9, 2020Publication date: July 2, 2020Applicants: NGK Insulators, Ltd., NGK Ceramic Device Co., Ltd.Inventors: Isamu Oguma, Takatomo Ogata, Shigeru Funabashi, Hidetake Ota
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Publication number: 20200212288Abstract: Provided is a method for producing a piezoelectric element in which a piezoelectric body substrate piece is subjected to polarization treatment and a piezoelectric element is produced. The method includes a first step in which the piezoelectric body substrate piece is held on a flat plate-shaped slightly adhesive sheet and a second step in which voltage is applied to the piezoelectric body substrate piece held on the slightly adhesive sheet and the piezoelectric body substrate piece is subjected to polarization treatment.Type: ApplicationFiled: March 10, 2020Publication date: July 2, 2020Applicant: NGK Insulators, Ltd.Inventors: Hiroki OBATA, Masayuki UETANI, Ryusuke IKEDA
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Publication number: 20200209302Abstract: Provided is a method for inspecting a piezoelectric element in which voltage is applied to a piezoelectric element and evaluation of the electrical characteristics of the piezoelectric element is performed. The method includes a first step in which the piezoelectric element is held on a flat plate-shaped slightly adhesive sheet and a second step in which voltage is applied to the piezoelectric element held on the slightly adhesive sheet and evaluation of the electrical characteristics of the piezoelectric element is performed.Type: ApplicationFiled: March 10, 2020Publication date: July 2, 2020Applicant: NGK Insulators, Ltd.Inventors: Hiroki Obata, Masayuki Uetani, Ryusuke Ikeda
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Patent number: 10700385Abstract: Provided is a battery including a layered double hydroxide. The battery includes a positive electrode, a negative electrode, an electrolytic solution being an aqueous alkali metal hydroxide solution, and a layered double hydroxide having a fundamental composition represented by the formula: M2+1?xM3+x(OH)2An?x/n·mH2O where M2+ represents a divalent cation, M3+ represents a trivalent cation, An? represents an n-valent anion, n is an integer of 1 or more, x is 0.1 to 0.4, and m is any real number, the layered double hydroxide being in contact with the electrolytic solution, wherein a metal compound containing a metal corresponding to M2+ and/or M3+ is dissolved in the electrolytic solution such that erosion of the layered double hydroxide by the electrolytic solution is suppressed. The present invention provides a highly reliable battery such that the degradation of a layered double hydroxide (LDH) contained in the battery can be significantly reduced.Type: GrantFiled: March 28, 2017Date of Patent: June 30, 2020Assignee: NGK Insulators, Ltd.Inventors: Shohei Yokoyama, Sho Yamamoto, Naohito Yamada
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Patent number: 10696010Abstract: A plugged honeycomb structure includes: a plurality of honeycomb segments, a bonding layer, and a plugging portions to plug open ends of cells of each of the honeycomb segments. The honeycomb segment is configured so that the cells having at least two kinds of different shapes are disposed in a cross section orthogonal to an extension direction of the cells, the honeycomb segment has a center region and an circumferential region located in the circumference of the center region, the center region has a cell arrangement pattern such that inflow cells surround one outflow cell, in the inflow end face of the honeycomb segment, the circumferential region has an open frontal area that is smaller than an open frontal area of the center region, the segment circumferential wall of the honeycomb segment and the bonding layer have a special thickness.Type: GrantFiled: August 24, 2016Date of Patent: June 30, 2020Assignee: NGK Insulators, Ltd.Inventors: Kazuya Mori, Toshihiro Hirakawa
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Patent number: 10701762Abstract: A heat radiation device includes a heat source, a meta-material structure layer arranged on a front surface side of the heat source and configured to radiate radiant energy in a specific wavelength range by converting heat energy inputted from the heat source into the radiant energy in the specific wavelength range, and a rear-surface metal layer arranged on a rear surface side of the heat source. An average emissivity of the rear-surface metal layer is smaller than an average emissivity of the meta-material structure layer.Type: GrantFiled: September 20, 2018Date of Patent: June 30, 2020Assignee: NGK Insulators, Ltd.Inventor: Yoshio Kondo