Patents Assigned to NGK Spark Plug Co., Ltd.
  • Publication number: 20240026501
    Abstract: A sintered body and cutting tool, the sintered body (2) including: a first hard particle (10) containing TiCN; a second hard particle (20) containing (Ti, M) (C, N); a third hard particle (30) including a core portion (31) containing TiCN, and a peripheral portion (32) enclosing the core portion (31) and containing (Ti, M) (C, N) each as main components; a particle (40) containing at least one of Al, Zr, and Si; and a binding phase (50) containing at least one of Co and Ni and at least one of Re and Ru, and has a thickness of not greater than 5 nm. The third hard particle (30) has, in the core portion (31), a particle (33) containing at least one selected from Co, Ni, Re, and Ru, and has a dislocation (34) in each of the core portion (31) and the peripheral portion (32).
    Type: Application
    Filed: September 13, 2021
    Publication date: January 25, 2024
    Applicant: NGK SPARK PLUG CO., LTD.
    Inventors: Yoshito KOJIMA, Kentaro YAMAMOTO, Ryoji TOYODA
  • Patent number: 11862943
    Abstract: Spark plug has center electrode having leg portion extending in an axis direction, brim portion located at rear end side with respect to the leg portion and protruding outwards in a radial direction with respect to the leg portion and connecting portion connecting the leg portion and the brim portion; insulator having penetration hole and supporting the center electrode; and seal member filling the penetration hole and fixing the brim portion and the insulator. The center electrode satisfies “(D1-D2)/D1?0.06”, where a maximum value of a radius of the brim portion is D1, and a minimum value of the radius of the brim portion is D2, also satisfies “L2/L1?0.30”, where a size of the center electrode along the axis direction is L1, and a size along the axis direction from boundary between the connecting portion and the leg portion to a center of gravity of the center electrode is L2.
    Type: Grant
    Filed: September 10, 2020
    Date of Patent: January 2, 2024
    Assignee: NGK SPARK PLUG CO., LTD.
    Inventors: Eiichi Nakai, Masahiro Nishida, Shingo Kozuka
  • Patent number: 11851344
    Abstract: A complex oxide ceramic according to an embodiment is a complex oxide ceramic including a rare earth element and at least one element selected from among molybdenum, tungsten, and vanadium. An example of the rare earth element is at least one species selected from among La, Ce, and Gd.
    Type: Grant
    Filed: July 16, 2019
    Date of Patent: December 26, 2023
    Assignees: TOKYO INSTITUTE OF TECHNOLOGY, KANAGAWA INSTITUTE OF INDUSTRIAL SCIENCE AND TECHNOLOGY, NGK SPARK PLUG CO., LTD.
    Inventors: Akira Nakajima, Takumi Matsumoto, Sachiko Matsushita, Toshihiro Isobe, Kayano Sunada
  • Publication number: 20230375489
    Abstract: A gas sensor 1 according to the present invention includes: a gas sensor element 22; a box-like casing 3 having a wall portion 3B1 provided with a gas introduction port 3B2; a circuit board 4 having a mounting surface 4a on which the gas sensor element 22 is mounted, and disposed inside the casing 3 such that the mounting surface 4a is away from the wall portion 3B1 and the gas sensor element 22 overlaps with the gas introduction port 3B2; and an annular elastic seal body 5 formed on the mounting surface 4a so as to surround the gas sensor element 22, and disposed between the mounting surface 4a and the wall portion 3B1. The elastic seal body 5 is made of sulfur-free condensation silicone resin.
    Type: Application
    Filed: September 15, 2021
    Publication date: November 23, 2023
    Applicant: NGK SPARK PLUG CO., LTD
    Inventors: Masahiro YAMASHITA, Shoji KITANOYA, Yusuke MATSUKURA
  • Patent number: 11824325
    Abstract: A multilayer wiring substrate includes a first wiring substrate including a plurality of stacked layers made of a thermo setting resin and having a wiring layer formed between each adjacent layer of the layers in a state in contact with the adjacent layers, a second wiring substrate made of a ceramic, and a joining layer disposed between a back surface of the first wiring substrate and a front surface of the second wiring substrate and configured to join the first wiring substrate and the second wiring substrate to each other, wherein at least a surface of the joining layer adjacent to the second wiring substrate is made of a thermo plastic resin.
    Type: Grant
    Filed: September 1, 2021
    Date of Patent: November 21, 2023
    Assignee: NGK SPARK PLUG CO., LTD.
    Inventor: Shingo Totani
  • Patent number: 11768168
    Abstract: A sensor (1) comprising: a sensor element (10); metal terminals; and a front side separator (90) and a rear side separator (95) to hold the metal terminals, the metal terminals each include a front side metal terminal (30) and a rear side metal terminal (40) respectively held by the front side separator and the rear side separator, a first connection portion (33) is provided on a rear side of the front side metal terminal, a second connection portion (43) is provided on a front side of the rear side metal terminal, and an axis P2 of one of the first and the second connection portion, in all of the plurality of metal terminals, is displaced toward a radially outer side of the sensor element relative to an axis P1 of a counterpart thereof, and the first connection portion and the second connection portion are in contact with each other.
    Type: Grant
    Filed: August 6, 2020
    Date of Patent: September 26, 2023
    Assignee: NGK SPARK PLUG CO., LTD.
    Inventors: Sunchao Liu, Takehiro Oba
  • Patent number: 11761924
    Abstract: A sensor element (100) including a measurement chamber (89); a pump cell (83) including a solid electrolyte body (69), an inner electrode (101), and an outer electrode (99); and a reference cell (85). At least one electrode contains a noble metal and a component of the solid electrolyte body. In a cross section, the at least one electrode has a noble metal region (205), a solid electrolyte body region (203), and a coexistence region (207) in which the noble metal and the component of the solid electrolyte body coexist. Further, in the cross section, an area ratio SR of the coexistence region is not less than 15.5% and is less than 30%.
    Type: Grant
    Filed: September 16, 2020
    Date of Patent: September 19, 2023
    Assignee: NGK SPARK PLUG CO., LTD.
    Inventors: Yosuke Suzuki, Takumi Yamada, Hitoshi Furuta, Kentaro Kamada
  • Patent number: 11754259
    Abstract: A fluorescent plate including a fluorescent phase which emits fluorescence by excitation light, and a plurality of voids, wherein, in a cross section of the fluorescent plate including cross sections of the voids, voids having an equivalent circle diameter of 0.4 micrometers or greater and 50 micrometers or smaller have a standard deviation in equivalent circle diameter of 1.5 or less.
    Type: Grant
    Filed: June 3, 2021
    Date of Patent: September 12, 2023
    Assignee: NGK SPARK PLUG CO., LTD.
    Inventors: Shohei Takaku, Hiroki Yamauchi, Shinji Ban, Hiroki Takeuchi
  • Patent number: 11749971
    Abstract: A metallic shell for a spark plug which metallic shell achieves suppressed elution of hexavalent chromium, and a spark plug including the metallic shell. The spark plug has a metallic shell. The metallic shell includes a tubular metallic shell body; a metal plating layer provided on a surface of the metallic shell body; and a chromium-containing chemical conversion coating layer provided to cover the metal plating layer. The chemical conversion coating layer has a zirconium component content of 0.1 mass % or more.
    Type: Grant
    Filed: February 15, 2023
    Date of Patent: September 5, 2023
    Assignee: NGK SPARK PLUG CO., LTD.
    Inventors: Takahiro Sanda, Keita Sugihara, Noriyasu Hasegawa, Yohei Kozakai
  • Publication number: 20230273149
    Abstract: A gas sensor 1 comprising: a sensor element 21; a metallic shell 11; and a single-wall tubular protector 51, wherein the protector has a gas introduction hole 56 and a gas discharge hole 53 disposed on a forward end side in relation to the gas introduction hole; the metallic shell has a fixing portion 13 whose outer surface is fixed to a pipe 100, and a larger-diameter tool engagement portion 14 located on a rear end side of the fixing portion and used to attach the gas sensor; a distance L1 in the axial O direction between the gas introduction hole and the gas discharge hole is greater than a distance L2 in the axial direction between the tool engagement portion and the gas introduction hole; and a forward end 21a of the sensor element is located on the forward end side in relation to the gas introduction hole.
    Type: Application
    Filed: April 22, 2021
    Publication date: August 31, 2023
    Applicant: NGK SPARK PLUG CO., LTD.
    Inventors: Kunihiko YONEZU, Yuji SHIMAZAKI, Masayuki YOSHIDA
  • Publication number: 20230268722
    Abstract: A metallic shell for a spark plug which metallic shell achieves suppressed elution of hexavalent chromium, and a spark plug including the metallic shell. The spark plug has a metallic shell. The metallic shell includes a tubular metallic shell body; a metal plating layer provided on a surface of the metallic shell body; and a chromium-containing chemical conversion coating layer provided to cover the metal plating layer. The chemical conversion coating layer has a zirconium component content of 0.1 mass % or more.
    Type: Application
    Filed: February 15, 2023
    Publication date: August 24, 2023
    Applicant: NGK SPARK PLUG CO., LTD.
    Inventors: Takahiro SANDA, Keita SUGIHARA, Noriyasu HASEGAWA, Yohei KOZAKAI
  • Publication number: 20230255533
    Abstract: A monitoring device includes an emitting part that emits an ultrasonic wave, a reception part that receives a reflected wave, and a detection part. When the emitting part emits the ultrasonic wave to a bottom of bladder of a subject, the reception part receives a reflected wave from the bottom of bladder, the reflected wave being based on the ultrasonic wave from the emitting part. The detection part detects, based on a result of reception by the reception part, a predetermined movement of the bottom of bladder or an index indicating a moving state of the bottom of bladder.
    Type: Application
    Filed: March 4, 2022
    Publication date: August 17, 2023
    Applicant: NGK SPARK PLUG CO., LTD.
    Inventors: Hiroko HASEGAWA, Yutaka TAKAGI, Yoshiki TSUBOI, Norihiko NADANAMI
  • Patent number: 11724415
    Abstract: The present invention is a sintering method of a ceramic for sintering characterized by forming a layer containing a carbon powder on a surface of an article consisting of a ceramic for sintering, and then irradiating with laser a surface of the carbon powder-containing layer of a lamination obtained.
    Type: Grant
    Filed: March 19, 2021
    Date of Patent: August 15, 2023
    Assignees: Japan Fine Ceramics Center, NORITAKE CO., LIMITED, TOTO LTD., NGK INSULATORS, LTD., NGK SPARK PLUG CO., LTD.
    Inventors: Teiichi Kimura, Satoshi Suehiro
  • Patent number: 11715933
    Abstract: A spark plug includes a center electrode, a tubular metallic shell which holds the center electrode therein in an insulated state, and a ground electrode which faces a forward end portion of the center electrode. The metallic shell has a penetration hole which penetrates the metallic shell in a direction intersecting an axial direction. The ground electrode has a press-fitted portion inserted into the penetration hole and fixed to the metallic shell, a projecting portion projecting toward an inner side of the metallic shell, and an insertion portion disposed between the press-fitted portion and the projecting portion, inserted into the penetration hole, and forming a space between the insertion portion and an inner surface of the penetration hole. An angle ? formed between the inner surface of the penetration hole and an outer surface of the insertion portion falls within a range of 0°<?<90°.
    Type: Grant
    Filed: November 19, 2020
    Date of Patent: August 1, 2023
    Assignee: NGK SPARK PLUG CO., LTD.
    Inventors: Kenji Ban, Tatsuya Gozawa
  • Patent number: 11695258
    Abstract: This spark plug includes a cap portion covering a center electrode and an end of a ground electrode from a front side. In a cross section including an axial line, where a pitch of an external thread of a metal shell is X (mm), an axial-line-direction distance between a crest of a rear-end ridge of a full thread portion of an external thread and a rear end of a contact portion of an insulator with which the metal shell contacts directly or via another member is A (mm), an axial-line-direction distance between the rear end of the contact portion and a front end of the insulator is B (mm), and an axial-line-direction distance between the rear end of the contact portion and a seating surface of the metal shell is C (mm), 0<A<4X, B?15, and C?3.6 are satisfied.
    Type: Grant
    Filed: August 27, 2020
    Date of Patent: July 4, 2023
    Assignee: NGK SPARK PLUG CO., LTD.
    Inventors: Tatsuya Gozawa, Ritsuka Nakagawa
  • Patent number: 11692699
    Abstract: A wavelength conversion member includes a ceramic fluorescent body for converting a wavelength of incident light, a heat radiation member for radiating heat of the ceramic fluorescent body to an outside atmosphere, and a solder layer for joining together the ceramic fluorescent body and the heat radiation member. The solder layer includes a joining portion disposed between the ceramic fluorescent body and the heat radiation member and a protruding portion protruding outward from an outer circumferential portion of the ceramic fluorescent body. The protruding portion is spaced apart from a side surface formed on the outer circumferential portion of the ceramic fluorescent body. In the solder layer, the maximum value of thickness of the protruding portion is greater than the average value of thickness of the joining portion.
    Type: Grant
    Filed: July 9, 2020
    Date of Patent: July 4, 2023
    Assignee: NGK SPARK PLUG CO., LTD.
    Inventors: Yosuke Yatsuya, Ryuichi Arakawa, Toshiyuki Sakurai, Tomoo Tanaka
  • Patent number: 11695257
    Abstract: A spark plug has an insulator having a through hole formed along an axial direction, a center electrode which is partially inserted into a portion of the through hole on a forward end side in the axial direction, and a glass seal portion which is in contact with the insulator and the center electrode within the through hole, in which the glass seal portion contains glass and an electrically conductive substance. The glass contains an Si component and a B component in a total amount of 50 mass % or more, as reduced to SiO2 and B2O3, a Zn component in an amount of 20 mass % to 35 mass % as reduced to ZnO, and an alkali metal component. The glass contains, as the alkali metal component, an Na component in an amount less than 1 mass % as reduced to Na2O.
    Type: Grant
    Filed: November 4, 2021
    Date of Patent: July 4, 2023
    Assignee: NGK SPARK PLUG CO., LTD.
    Inventors: Seiji Nakano, Takehito Kuno, Kota Yamauchi
  • Publication number: 20230204535
    Abstract: A gas sensor element (10) which includes an element body portion (100); a pump cell (110) which is configured to adjust a concentration of oxygen in a gas to be measured which is introduced into the element body portion (100); a detection chamber (160) which is formed inside the element body portion (100) and into which the gas to be measured in which the concentration of oxygen has been adjusted is introduced; and a layer-shaped cathode electrode (133) which is housed in the detection chamber (160) and configured to decompose NO. A relationship between a volume V1 of the detection chamber (160) and a volume V2 of the cathode electrode (133) in the gas sensor element (10) satisfies either one of conditions (A) and (B) as defined herein.
    Type: Application
    Filed: December 20, 2022
    Publication date: June 29, 2023
    Applicant: NGK SPARK PLUG CO., LTD.
    Inventors: Hitoshi FURUTA, Akinori KOJIMA, Kentaro KAMADA, Yosuke SUZUKI
  • Publication number: 20230178968
    Abstract: A spark plug includes a tubular metallic shell, a tubular insulator held in the metallic shell and having an axial hole, a center electrode held at one end of the axial hole, a metallic terminal member held at the other end of the axial hole, and a resistor element disposed between the center electrode and the metallic terminal member in the axial hole and containing glass and an electrically conductive material. The resistor element has a first resistor layer disposed on the center electrode side and closest to the center electrode and containing titanium oxide, and a second resistor layer disposed on the metallic terminal member side in relation to the first resistor layer and whose titanium oxide content is lower than that of the first resistor layer. The titanium oxide content decreases from the center electrode side toward the metallic terminal member side.
    Type: Application
    Filed: September 14, 2021
    Publication date: June 8, 2023
    Applicant: NGK Spark Plug Co., LTD.
    Inventors: Kengo FUJIMURA, Syoma TSUMAGARI, Soh TOHARA, Yuichi YAMADA
  • Patent number: 11659767
    Abstract: A thermoelectric element-containing package according to one aspect of the present disclosure includes a thermoelectric conversion module including: a first substrate having first and second main surfaces; a second substrate having third and fourth main surfaces; and a plurality of thermoelectric elements that are sandwiched between the first and second substrates and arranged along the second main surface and the third main surface. The thermoelectric element-containing package further includes: a frame joined to the first and second substrates so as to form a hermetically sealed space surrounding the plurality of thermoelectric elements and disposed between the first substrate and the second substrate; and a placement member that is disposed on the first main surface of the first substrate or the fourth main surface of the second substrate and to which an additional device is to be connected.
    Type: Grant
    Filed: February 14, 2018
    Date of Patent: May 23, 2023
    Assignees: NGK SPARK PLUG CO., LTD., FERROTEC MATERIAL TECHNOLOGIES CORPORATION
    Inventors: Masahiro Ogawa, Tetsuya Kato, Takayuki Hachida