Patents Assigned to NGK Spark Plug Co., Ltd.
  • Publication number: 20200200636
    Abstract: A pressure sensor including: a cylindrical casing extending in an axial direction; a diaphragm joined to the distal end side of the casing, extending in a direction intersecting the axis of the casing and deforming in accordance with pressure received on the distal end side; and a sensor section disposed inside the casing and outputting an electric signal corresponding to the deformation of the diaphragm. The diaphragm is provided with a plate-shaped base part and three or more protruding parts protruding from the distal end side surface of the base part toward the distal end side and set apart from each other. The relationships 0.05?H?2.5T and 0.05?(S2/S1)?0.8 are satisfied, where T (thickness), H (length), S1 (area of base distal end surface) and S2 (total area of protruding distal end surfaces) are as defined herein.
    Type: Application
    Filed: December 8, 2016
    Publication date: June 25, 2020
    Applicant: NGK SPARK PLUG CO., LTD.
    Inventors: Yusuke FUJI, Tatsunori YAMADA, Daiki GOTO, Junki IWABUCHI
  • Patent number: 10690716
    Abstract: Provided is a multilayer wiring board for inspection of electronic components which has excellent reliability by improving the adhesiveness between a resin wiring portion and a ceramic wiring substrate. A multilayer wiring board 10 according to the present invention includes: a ceramic wiring substrate 20 having a substrate main surface 21 and a substrate rear surface 22; substrate-side conductive layers 32, 33 formed on the substrate main surface 21; and a resin wiring portion 40 stacked on the substrate main surface 21 so as to cover the substrate-side conductive layers 32, 33. Inspection pads 50, 51 for inspection of electronic components are formed on a front surface 49 of the resin wiring portion 40. End surfaces of the substrate-side conductive layers 33 are exposed from side surfaces 13 of the multilayer wiring board 10.
    Type: Grant
    Filed: May 8, 2017
    Date of Patent: June 23, 2020
    Assignee: NGK SPARK PLUG CO., LTD.
    Inventors: Junichirou Kanematsu, Kenji Suzuki
  • Patent number: 10690571
    Abstract: A particulate detection system (10, 1010) includes a sensor section (100) and a sensor drive section (300). A flow EIF of a measurement target gas EI passes through the sensor section, and an amount M of particulates S is detected. The sensor section (100) includes an ion applying section (100e) which generates ions CP, discharges ion-adhering electrified particulates SC, and collects unadhered ions CPF. The sensor drive section includes a sensor current value obtainment section (530) for obtaining a sensor current value Ss corresponding to the amount QH of flowed out charge, a flow velocity obtainment section (510) for obtaining, the flow velocity Vg of the external gas flow, and a particulate amount obtainment section (550, 1550) for obtaining the amount M of particulates S. The influence of flow velocity Vg is mitigated using the sensor current value Ss and the flow velocity Vg.
    Type: Grant
    Filed: November 16, 2017
    Date of Patent: June 23, 2020
    Assignee: NGK SPARK PLUG CO., LTD.
    Inventors: Hirokazu Murase, Takeshi Sugiyama
  • Patent number: 10684248
    Abstract: An NOx sensor includes a gas sensor element, a body member made of metal, and a protector made of metal. The body member is formed into a tubular shape extending in an axial direction and accommodates a gas sensor element internally of the same. The NOx sensor is formed into a tubular shape extending in the axial direction and includes an attachment member disposed such that a space extending in the axial direction is formed between the attachment member and the body member. The gas sensor element includes an oxygen concentration detection cell having an oxygen ion-conductive solid electrolyte layer and a detection electrode and a reference electrode formed on the solid electrolyte layer and forming a pair, and a heater for heating the oxygen concentration detection cell to a predetermined temperature. The oxygen concentration detection cell is disposed in the space.
    Type: Grant
    Filed: December 15, 2017
    Date of Patent: June 16, 2020
    Assignee: NGK Spark Plug Co., LTD.
    Inventors: Hitoshi Furuta, Masaki Nakagawa
  • Patent number: 10679873
    Abstract: The ceramic heater includes: a ceramic base body made of ceramic and having an upper surface on which an object to be heated is to be placed; a heating resistor included in the ceramic base body; and a cylindrical shaft made of ceramic and connected to a center part of a lower surface of the ceramic base body. The heating resistor includes six heating resistor element groups each including one or more connected heating resistor elements. Among these, three heating resistor element groups each have both ends each connected to the corresponding end of another one of the heating resistor element groups. Power feed terminals which respectively supply powers to a total of three ends composed of these both ends are connected to the total of three ends.
    Type: Grant
    Filed: September 28, 2017
    Date of Patent: June 9, 2020
    Assignee: NGK SPARK PLUG CO., LTD.
    Inventors: Tetsuo Kitabayashi, Toshiyuki Endo
  • Patent number: 10680416
    Abstract: A tip is welded appropriately using an energy beam. The tip is welded to a base portion by irradiating the interface between the base portion and the tip with the energy beam. The welding the tip to the base portion includes: applying the energy beam continuously, while moving the irradiation position of the energy beam, in a first period of time; and applying the energy beam a plurality of times according to a pulsed output pattern, while moving the irradiation position of the energy beam, in a second period of time subsequent to the first period of time.
    Type: Grant
    Filed: December 11, 2017
    Date of Patent: June 9, 2020
    Assignee: NGK SPARK PLUG CO., LTD.
    Inventors: Yusuke Tenkumo, Susumu Imai
  • Patent number: 10671103
    Abstract: A voltage supply apparatus for supplying a voltage to a detection circuit, including a power supply filter (4) and a control section (5) which supply a sensor drive voltage Vbg to a sensor device (2) having a ratiometric characteristic. The power supply filter (4) has supply paths PL1 and PL2. The control section (5) determines whether or not a switching determination time has elapsed after startup. In the case where the switching determination time has not yet elapsed, the power supply filter (4) supplies the sensor drive voltage Vbg through supply path PL1. In the case where the switching determination time has elapsed, the power supply filter (4) supplies the sensor drive voltage Vbg through supply path PL2. The response of the sensor drive voltage Vbg to a variation in power supply voltage Vcc is slower when supplied through the supply path PL2 than through the supply path PL1.
    Type: Grant
    Filed: March 7, 2018
    Date of Patent: June 2, 2020
    Assignee: NGK SPARK PLUG CO., LTD.
    Inventor: Yuzo Higuchi
  • Patent number: 10669963
    Abstract: An anomaly determination apparatus determines an anomaly of a current control apparatus which supplies a control current to a control target and includes a current anomaly determination section. The current anomaly determination section is configured to compare a normal numerical range within which a state quantity changing with the control current falls in a particular state with a particular state quantity which is the state quantity corresponding to the control current generated by the control current generation section in the particular state, and determine that at least one of the reference resistor, the reference current generation section, and the control current generation section is in an anomalous state in the case where the particular state quantity has deviated from the normal numerical range. By using the current anomaly determination section, the anomaly determination apparatus can determine an anomaly of the current control apparatus.
    Type: Grant
    Filed: April 18, 2018
    Date of Patent: June 2, 2020
    Assignee: NGK Spark Plug Co., LTD.
    Inventors: Junichiro Mitsuno, Satoru Abe, Chihiro Tomimatsu, Hidetoshi Makino
  • Patent number: 10674614
    Abstract: A wiring substrate for electronic component inspection apparatus includes a first laminate which is formed by stacking a plurality of ceramic layers and which has a front surface and a back surface, and a plurality of studs joined to the back surface of the first laminate Each of the studs is composed of a flange portion which is circular in bottom view, and a bolt portion which perpendicularly extends from a center portion of an outside surface of the flange portion. The flange portion has a truncated conical shape and the outside surface from which the bolt portion protrudes, such that the outside surface slopes from the proximal end side of the bolt portion toward the peripheral edge of the flange portion and gradually approaches the inside surface of the flange portion.
    Type: Grant
    Filed: September 27, 2018
    Date of Patent: June 2, 2020
    Assignee: NGK SPARK PLUG CO., LTD.
    Inventors: Takakuni Nasu, Masaomi Hattori
  • Patent number: 10665761
    Abstract: An optical wavelength conversion member including a polycrystalline ceramic sintered body containing, as main components, Al2O3 crystal grains and crystal grains of a component represented by formula A3B5O12:Ce, wherein A is at least one element selected from Sc, Y and lanthanoids (except for Ce), and B is at least one element selected from Al and Ga. Further, the following relations are satisfied: 0%?X?25%, 9%?Y?45%, and 48%?Z?90%, wherein X represents a proportion corresponding to the ratio a/N, Y represents a proportion corresponding to the ratio b/N, and Z represents a proportion corresponding to the ratio c/N and a, b, c and N are as defined herein. Also disclosed is a light-emitting device including the optical wavelength conversion member.
    Type: Grant
    Filed: October 18, 2017
    Date of Patent: May 26, 2020
    Assignee: NGK SPARK PLUG CO., LTD.
    Inventors: Jun Moteki, Shohei Takaku, Yusuke Katsu, Takeshi Mitsuoka, Tsuneyuki Ito
  • Patent number: 10665872
    Abstract: A fuel cell stack including a plurality of electricity generation units fastened by means of a plurality of fastening members. Each electricity generation unit includes a single cell, and a sealing member sandwiched between two other members thereby sealing one of the anode chamber and the cathode chamber. The surface of the sealing member included in at least one electricity generation units, the surface facing either of the two other members, has a surface roughness Ra of 3.0 ?m or less.
    Type: Grant
    Filed: June 7, 2016
    Date of Patent: May 26, 2020
    Assignee: NGK SPARK PLUG CO., LTD.
    Inventors: Nobuyuki Hotta, Hideki Ishikawa, Shunta Ohashi, Yasuki Izutsu
  • Patent number: 10666023
    Abstract: A spark plug includes: a center electrode; an insulating member; a metal shell; a ground electrode; and a cap covers an opening of the metal shell on the front end side to define an auxiliary combustion space in which the gap is disposed, a first angle being formed by a second line and a first tangent line, a second angle being formed by the second line and a second tangent line, the second angle being greater than the first angle, and at least a portion of the opening of the specific through hole on the auxiliary combustion space side being positioned on a range of the second angle.
    Type: Grant
    Filed: June 28, 2019
    Date of Patent: May 26, 2020
    Assignee: NGK SPARK PLUG CO., LTD.
    Inventor: Tatsuya Gozawa
  • Patent number: 10660990
    Abstract: A method of producing an article with a foamed surface which includes: a step 1 of forming small pores in a surface of a base made of a plastic to produce a base with small pores; a step 2 of immersing the base with small pores, obtained in step 1, in a solution including a foaming agent to prepare a foaming agent-including base; a step 3 of immersing the foaming agent-including base, obtained in step 2, in a foaming solution that makes the plastic swell and the foaming agent foam to prepare a foamed base; and a step 4 of immersing the foamed base, obtained in step 3, in a coagulating solution that coagulates the swollen plastic.
    Type: Grant
    Filed: January 12, 2018
    Date of Patent: May 26, 2020
    Assignee: NGK SPARK PLUG CO., LTD.
    Inventors: Shinjiro Kasahara, Takenori Sawamura
  • Patent number: 10663426
    Abstract: A sensor controller includes a signal reception determination section and a use suspension section. The signal reception determination section determines whether or not the sensor controller has received a specific state signal that indicates a specific state in which exhaust gas may contain a specific gas that differs from ammonia and reacts with an ammonia sensor. When the signal reception determination section determines that the sensor controller has received the specific state signal, the use suspension section suspends at least temporarily use of a detection result detected by the ammonia sensor after the determination. Specifically, upon reception of the specific state signal, the sensor controller suspends at least temporarily the use of the detection result detected by the ammonia sensor after the reception of the specific state signal.
    Type: Grant
    Filed: November 1, 2017
    Date of Patent: May 26, 2020
    Assignee: NGK Spark Plug Co., LTD.
    Inventor: Yoshihiro Nakano
  • Patent number: 10661378
    Abstract: Disclosed is a method for manufacturing a spark plug of the type in which a tip is joined to a ground electrode. In a positioning step, the ground electrode is positioned with respect to a first electrode by means of a pressing member. In a tip pressing step, the tip is pressed against a tip weld site of the ground electrode by means of a second electrode. In a welding step, the tip is resistance welded to the tip weld site of the ground electrode by the passage of electric current between the first and second electrodes.
    Type: Grant
    Filed: September 26, 2017
    Date of Patent: May 26, 2020
    Assignee: NGK SPARK PLUG CO., LTD.
    Inventor: Shunsuke Maki
  • Publication number: 20200153207
    Abstract: A spark plug that prevents a decrease in strength of a member to which a mark is attached while ensuring a readability of the mark, and a method of manufacturing the spark plug. The spark plug is configured to ignite an air-fuel mixture in an internal combustion engine. The spark plug includes: a mark formed of an oxide film generated on a surface of a metallic member or is formed of the metallic member and the oxide film; and a coating material covering the whole mark and allowing transmission of light.
    Type: Application
    Filed: October 30, 2019
    Publication date: May 14, 2020
    Applicant: NGK SPARK PLUG CO., LTD.
    Inventor: Naoki SADAKA
  • Publication number: 20200153019
    Abstract: An electrochemical cell including a solid electrolyte layer containing ZrO2 containing a first rare earth element; a cathode disposed on one side of the solid electrolyte layer; and an anode disposed on the other side of the solid electrolyte layer. The anode contains CeO2 containing a second rare earth element and Ni or an Ni-containing alloy. The electrochemical cell further includes an intermediate layer disposed between the solid electrolyte layer and the anode. The intermediate layer contains a solid solution containing Zr, Ce, the first rare earth element, and the second rare earth element. Also disclosed is an electrochemical stack including a plurality of the electrochemical cells, where the electrochemical stack is a solid oxide fuel cell stack or a solid oxide electrolysis cell stack.
    Type: Application
    Filed: May 17, 2018
    Publication date: May 14, 2020
    Applicant: NGK SPARK PLUG CO., LTD.
    Inventors: Keisuke YAMADA, Yoshihiro FUNAHASHI, Katsuya YAMAGIWA
  • Patent number: 10651632
    Abstract: A spark plug includes a tip extending in a first direction and an electrode base metal having an extending portion extending in the first direction and connected to the tip through a fusion zone. In a section taken along the first direction and containing a center axis of the tip, in a case where two ends of the interface between the extending portion and the fusion zone are located at the same position with respect to the first direction, the linear distance between the ends is denoted by A, or, in a case where one end is located forward of the other end, the distance from the one end to an intersection between a straight line passing the one end and extending perpendicularly to the center axis and the outline of the fusion zone is denoted by A. The interface length B satisfies a relational expression B/A?1.2.
    Type: Grant
    Filed: July 8, 2019
    Date of Patent: May 12, 2020
    Assignee: NGK SPARK PLUG CO., LTD.
    Inventor: Junji Kimura
  • Patent number: 10651630
    Abstract: A spark plug electrode wearing rate estimating method for a spark plug in which spark discharge occurs between two electrodes by application of voltage generated by an ignition coil, includes the step of estimating a wearing rate of a first electrode in one spark discharge based on a temperature of the first electrode, and a spark discharge voltage and supply energy from the ignition coil. The first electrode contains any one of Ir, Ru, W, and Ni as a main component.
    Type: Grant
    Filed: May 23, 2019
    Date of Patent: May 12, 2020
    Assignee: NGK Spark Plug Co., LTD.
    Inventor: Takahiro Karumi
  • Patent number: 10644483
    Abstract: A plurality of assemblies are prepared, and a predetermined voltage is applied to a center electrode of each of the plurality of assemblies. The voltage applied to each of the plurality of center electrodes is detected by respective voltage sensors, and a differentiated value is calculated by differentiating the applied voltage, detected by each voltage sensor, with respect to time. A judgment is made as to whether or not a differentiated value change state in which an absolute value of the differentiated value becomes equal to or greater than a predetermined threshold value occurs. A judgment is made as to whether or not the occurrence of the differentiated value change state is caused by the noise, according to the voltage applied, for a specific time from the occurrence of the differentiated value change state, to the center electrode where the differentiated value change state has occurred.
    Type: Grant
    Filed: July 24, 2019
    Date of Patent: May 5, 2020
    Assignee: NGK SPARK PLUG CO., LTD.
    Inventor: Masafumi Okuda