公开(公告)号：US11986901B2

公开(公告)日：2024-05-21

申请号：US17291557

申请日：2020-03-06

Applicant: NGK SPARK PLUG CO., LTD. ,  OSAKA UNIVERSITY

Inventor： Hidetoshi Fujii ,  Yoshiaki Morisada ,  Yusuke Katsu ,  Hiroki Takeuchi

IPC: B23K20/00 ,  B23K20/12 ,  B23K103/04

CPC classification number: B23K20/1255 ,  B23K2103/04

Abstract: A friction stir welding tool (1) has a shoulder portion (2) and a probe portion (6) provided on a bottom surface of the shoulder portion (2). The probe portion (6) has a length of 5.5 mm or more. In the friction stir welding tool (1), a ceramic material whose main phase is silicon nitride or sialon is used as a base material.

公开(公告)号：US12110577B2

公开(公告)日：2024-10-08

申请号：US17421201

申请日：2020-03-11

Applicant: NGK SPARK PLUG CO., LTD.

Inventor： Hiroshi Watanabe ,  Satoshi Mori ,  Manami Fujii ,  Katsuya Takaoka ,  Hiroki Takeuchi ,  Hisashi Kozuka

IPC: B22F1/00 ,  B22F1/05 ,  B22F1/052 ,  B22F1/105 ,  B22F1/16 ,  C22C38/02 ,  H01F1/20

CPC classification number: C22C38/02 ,  B22F1/00 ,  B22F1/05 ,  B22F1/052 ,  B22F1/105 ,  B22F1/16 ,  H01F1/20 ,  B22F2301/35 ,  B22F2302/253 ,  B22F2304/10 ,  B22F2998/10 ,  B22F1/142 ,  B22F1/16 ,  B22F3/02 ,  B22F2003/248

Abstract: The iron loss of a dust core is reduced. A dust core (1) includes soft magnetic metal particles (3) having an average particle size of 5 μm or more and 30 μm or less, and a particle boundary phase (6). The particle boundary phase (6) includes a polycrystalline compound containing Al (aluminum). When a sectional structure of the dust core (1) is observed, an area percentage of α-Al2O3 in the particle boundary phase (6) is 75% or less. An average thickness Ta of the particle boundary phase (6) is 10 nm or more and 300 nm or less. According to the present invention, the iron loss is reduced.

公开(公告)号：US11994284B2

公开(公告)日：2024-05-28

申请号：US18245275

申请日：2021-12-13

Applicant: NGK SPARK PLUG CO., LTD.

Inventor： Yosuke Yatsuya ,  Toshiyuki Sakurai ,  Shohei Takaku ,  Hiroki Yamauchi ,  Tomoo Tanaka ,  Hiroki Takeuchi ,  Shinji Ban

IPC: F21V7/30 ,  F21K9/64 ,  F21V9/30

CPC classification number: F21V7/30 ,  F21K9/64 ,  F21V9/30

Abstract: There is provided a wavelength conversion member including: a fluorescent body and a reflective film. The fluorescent body is configured to emit fluorescence by an excitation light and has an incident surface into which the excitation light comes and a rear surface which faces the incident surface. The reflective film is arranged on a side of the rear surface of the fluorescent body and includes a metal layer and ceramic particles dispersed in the metal layer. The ceramic particles are crystalline, and a melting point of the ceramic particles is higher than a melting point of a metal constructing the metal layer.

公开(公告)号：US10557451B2

公开(公告)日：2020-02-11

申请号：US15252391

申请日：2016-08-31

Applicant: NGK Spark Plug Co., LTD.

Inventor： Hiroki Takeuchi ,  Yoshihito Ikai

IPC: F02P19/02 ,  F23Q7/00

Abstract: A ceramic heater includes a substrate containing a ceramic, and a resistor containing another ceramic and embedded in the substrate. The resistor includes two lead portions, a joint portion that connects the two lead portions, an electrode portion formed integrally with at least one lead portion, having one end portion connected to the one lead portion, extending in a direction crossing an axis of the one lead portion, and having the other end portion exposed at the surface of the substrate. In a cross section of the electrode portion taken along an imaginary plane passing through the axis of the one lead portion and parallel to an extending direction of the electrode portion, 0.1≤A/B≤0.8 is satisfied, where A is the length of the other end portion parallel to the axis, and B is the length of the one end portion parallel to the axis.

公开(公告)号：US20150207300A1

公开(公告)日：2015-07-23

申请号：US14420819

申请日：2013-08-23

Applicant: NGK SPARK PLUG CO., LTD.

Inventor： Hiroki Takeuchi ,  Yutaka Yokoyama ,  Kuniharu Tanaka ,  Takeshi Mitsuoka ,  Toshitaka Honda ,  Hirokazu Kurono ,  Katsuya Takaoka ,  Hironori Uegaki

IPC: H01T13/38 ,  C04B35/10

CPC classification number: H01T13/38 ,  C04B35/10 ,  C04B35/111 ,  C04B2235/3201 ,  C04B2235/3206 ,  C04B2235/3208 ,  C04B2235/3213 ,  C04B2235/3215 ,  C04B2235/3222 ,  C04B2235/3224 ,  C04B2235/3225 ,  C04B2235/3227 ,  C04B2235/3232 ,  C04B2235/3418 ,  C04B2235/3481 ,  C04B2235/80 ,  C04B2235/85 ,  G01R31/12 ,  G01R31/14 ,  H01T13/60

Abstract: A spark plug including an insulator containing an Al component, in terms of oxides, 89 mass % or more and a Ti component, in terms of oxides, more than 0 mass % and 0.2 mass % or less, characterized in that the insulator is formed of an alumina-based sintered material which contains, in a grain boundary phase present between alumina crystal grains, a first crystal phase containing at least one species selected from among an La component, an Nd component, a Pr component, a Y component, an Er component, a Yb component, and an Lu component, and a second crystal phase containing at least one species of Group 2 element components, an Al component and an Si component.

Abstract translation: 一种火花塞，其包括以氧化物计，89质量％以上的Al成分和Ti成分以氧化物计，大于等于0质量％和0.2质量％以下的绝缘体，其特征在于，形成所述绝缘体 的氧化铝系烧结体，其在存在于氧化铝晶粒之间的晶界相中含有含有选自La成分，Nd成分，Pr成分，Y成分， 铒组分，Yb组分和Lu组分，以及含有至少一种2族元素组分，Al组分和Si组分的第二晶相。

公开(公告)号：US11796156B2

公开(公告)日：2023-10-24

申请号：US18000864

申请日：2021-06-03

Applicant: NGK SPARK PLUG CO., LTD.

Inventor： Shohei Takaku ,  Hiroki Yamauchi ,  Shinji Ban ,  Hiroki Takeuchi

IPC: F21V9/40 ,  F21V29/502 ,  F21V29/70 ,  F21V7/26

CPC classification number: F21V9/40 ,  F21V7/26 ,  F21V29/502 ,  F21V29/70

Abstract: A fluorescent plate includes a fluorescent phase which emits fluorescence by excitation light, a light-transmitting phase which allows passage of the excitation light, and a plurality of voids surrounded by the fluorescent phase and the light-transmitting phase, wherein, in a cross section of the fluorescent plate including cross sections of the voids, an average ratio of a portion of the circumference of a void, which portion is in contact with the fluorescent phase to the entire circumference of the void, is higher than an area ratio of the area of the fluorescent phase present in the fluorescent plate to the total area of the fluorescent phase and the light-transmitting phase present in the fluorescent plate.

公开(公告)号：US09385511B2

公开(公告)日：2016-07-05

申请号：US14420819

申请日：2013-08-23

Applicant: NGK SPARK PLUG CO., LTD.

Inventor： Hiroki Takeuchi ,  Yutaka Yokoyama ,  Kuniharu Tanaka ,  Takeshi Mitsuoka ,  Toshitaka Honda ,  Hirokazu Kurono ,  Katsuya Takaoka ,  Hironori Uegaki

IPC: C04B35/10 ,  H01T13/38 ,  C04B35/111 ,  H01T13/60 ,  G01R31/12 ,  G01R31/14

CPC classification number: H01T13/38 ,  C04B35/10 ,  C04B35/111 ,  C04B2235/3201 ,  C04B2235/3206 ,  C04B2235/3208 ,  C04B2235/3213 ,  C04B2235/3215 ,  C04B2235/3222 ,  C04B2235/3224 ,  C04B2235/3225 ,  C04B2235/3227 ,  C04B2235/3232 ,  C04B2235/3418 ,  C04B2235/3481 ,  C04B2235/80 ,  C04B2235/85 ,  G01R31/12 ,  G01R31/14 ,  H01T13/60

Abstract: A spark plug including an insulator containing an Al component, in terms of oxides, 89 mass % or more and a Ti component, in terms of oxides, more than 0 mass % and 0.2 mass % or less, characterized in that the insulator is formed of an alumina-based sintered material which contains, in a grain boundary phase present between alumina crystal grains, a first crystal phase containing at least one species selected from among an La component, an Nd component, a Pr component, a Y component, an Er component, a Yb component, and an Lu component, and a second crystal phase containing at least one species of Group 2 element components, an Al component and an Si component.

Abstract translation: 一种火花塞，其包括以氧化物计，89质量％以上的Al成分和Ti成分以氧化物计，大于等于0质量％和0.2质量％以下的绝缘体，其特征在于，形成所述绝缘体 的氧化铝系烧结体，其在存在于氧化铝晶粒之间的晶界相中含有含有选自La成分，Nd成分，Pr成分，Y成分， 铒组分，Yb组分和Lu组分，以及含有至少一种2族元素组分，Al组分和Si组分的第二晶相。

公开(公告)号：US11754259B2

公开(公告)日：2023-09-12

申请号：US18000953

申请日：2021-06-03

Applicant: NGK SPARK PLUG CO., LTD.

Inventor： Shohei Takaku ,  Hiroki Yamauchi ,  Shinji Ban ,  Hiroki Takeuchi

IPC: F21V13/00 ,  F21V13/08 ,  F21V9/40 ,  F21V29/83 ,  F21V7/05 ,  F21V3/08 ,  F21Y115/10 ,  F21Y115/30

CPC classification number: F21V13/08 ,  F21V3/08 ,  F21V7/05 ,  F21V9/40 ,  F21V29/83 ,  F21Y2115/10 ,  F21Y2115/30

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.

公开(公告)号：US10041674B2

公开(公告)日：2018-08-07

申请号：US15252467

申请日：2016-08-31

Applicant: NGK Spark Plug Co., LTD.

Inventor： Hiroki Takeuchi ,  Yoshihito Ikai

IPC: F23Q7/00 ,  H05B3/48

Abstract: A ceramic heater includes a substrate containing a ceramic, and a resistor containing another ceramic and embedded in the substrate. The resistor includes two lead portions, a joint portion connecting the two lead portions, and an electrode portion formed integrally with at least one lead portion and extending in a direction crossing an axial line of the one lead portion. The electrode portion has a base end portion connected to the one lead portion, a distal end portion exposed at an outer surface of the substrate, and a connection portion disposed between the base end portion and the distal end portion and connecting the base end portion and the distal end portion together. A cross section of either the base end portion, the distal end portion, and the connection portion has an imaginary plane perpendicular to an extension direction of the electrode portion and has a streamline shape.

公开(公告)号：US09160145B2

公开(公告)日：2015-10-13

申请号：US14273026

申请日：2014-05-08

Applicant: NGK SPARK PLUG CO., LTD.

Inventor： Katsuya Takaoka ,  Yutaka Yokoyama ,  Kengo Fujimura ,  Hironori Uegaki ,  Hiroki Takeuchi ,  Hirokazu Kurono ,  Toshitaka Honda ,  Kuniharu Tanaka ,  Takeshi Mitsuoka

IPC: H01T13/38 ,  C04B35/50 ,  C04B35/505 ,  C04B35/111

CPC classification number: H01T13/38 ,  C04B35/111 ,  C04B2235/3206 ,  C04B2235/3208 ,  C04B2235/3213 ,  C04B2235/3215 ,  C04B2235/3224 ,  C04B2235/3225 ,  C04B2235/3227 ,  C04B2235/3229 ,  C04B2235/3232 ,  C04B2235/3241 ,  C04B2235/3244 ,  C04B2235/3251 ,  C04B2235/3262 ,  C04B2235/3272 ,  C04B2235/3418 ,  C04B2235/786 ,  C04B2235/85

Abstract: An insulator for spark plug with a main constituent of alumina and containing silicon includes a grain boundary phase positioned between alumina particles. The grain boundary phase contains: a group 2A element; a rare earth element; and at least one kind of zirconium, titanium, chrome, niobium, manganese, and iron (a first element). Assuming that a total amount of the rare earth element is X (mass %), a total amount of the group 2A element is Y (mass %), and a total amount of the first element is Z (mass %), the following are met: 0.40≦Y/X≦2.00 0.10≦Z/X≦0.40.

Abstract translation: 具有主要成分为氧化铝和含硅的火花塞的绝缘体包括位于氧化铝颗粒之间的晶界相。 晶界相包含：2A族元素; 稀土元素; 和至少一种锆，钛，铬，铌，锰和铁（第一元素）。 假设稀土元素的总量为X（质量％），则2A族元素的总量为Y（质量％），第一元素的总量为Z（质量％），以下为 满足：0.40＆nlE; Y / X＆nlE; 2.00 0.10＆nlE; Z / X＆lt;