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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
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.
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2.发明授权公开(公告)号：US10883192B2
公开(公告)日：2021-01-05
申请号：US15152888
申请日：2016-05-12
Applicant: NGK SPARK PLUG CO., LTD.
Inventor： Hisashi Kozuka , Yasuyuki Okimura , Kazushige Ohbayashi
IPC: G01N27/407 , G01N27/30 , C30B29/22 , G01N27/12 , C04B35/632 , C04B35/626 , C04B35/50
Abstract: A sintered electrically conductive oxide for an oxygen sensor electrode includes a crystal phase formed of a perovskite-type electrically conductive oxide containing at least La, Fe and Ni. The oxide has an absolute value of thermoelectromotive force at 770° C. of 21.0 μV/K or less.
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公开(公告)号：US10352893B2
公开(公告)日：2019-07-16
申请号：US15250143
申请日：2016-08-29
Applicant: NGK SPARK PLUG CO., LTD.
Inventor： Keisuke Nakagawa , Shigehiro Ohtsuka , Hisashi Kozuka , Kazuma Ito , Ippei Kato
IPC: G01N27/406 , G01N27/407
Abstract: A gas sensor control apparatus including a gas sensor element, a heater for heating the gas sensor element, and heater energization control means for feedback controlling the supply of electric current to the heater such that the internal resistance of the gas sensor element coincides with a target resistance. The gas sensor element has a solid electrolyte member and an electrode portion including an outside electrode and an inside electrode. At least a portion of the electrode portion is formed of an electrically conductive oxide whose main component is (i) a first perovskite phase which is represented by a composition formula of LaCo1−xNixO3±d (0.300≤x≤0.600, 0≤d≤0.4) and has a perovskite-type crystal structure, or (ii) a second perovskite phase which is represented by a composition formula of LaFe1−yNiyO3±d (0.450≤y≤0.700, 0≤d≤0.4) and has a perovskite-type crystal structure.
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公开(公告)号：US09938197B2
公开(公告)日：2018-04-10
申请号：US14780235
申请日：2014-03-11
Applicant: NGK SPARK PLUG CO., LTD.
Inventor： Masato Yamazaki , Takayuki Matsuoka , Kazuaki Kitamura , Hisashi Kozuka , Hideto Yamada , Toshiaki Kurahashi , Yasuyuki Okimura , Kazushige Ohbayashi , Takashi Kasashima
IPC: H01L41/187 , C04B35/00 , C04B35/495 , G01L23/22 , H01L41/43 , H01L41/113 , H01L41/047 , H01L41/08 , H01L41/09 , H03H9/02
CPC classification number: C04B35/495 , C04B2235/3201 , C04B2235/3203 , C04B2235/3206 , C04B2235/3208 , C04B2235/3215 , C04B2235/3232 , C04B2235/3234 , C04B2235/3236 , C04B2235/3244 , C04B2235/3251 , C04B2235/3262 , C04B2235/3272 , C04B2235/3279 , C04B2235/3281 , C04B2235/3284 , C04B2235/3293 , C04B2235/3294 , C04B2235/3418 , C04B2235/602 , C04B2235/768 , C04B2235/80 , G01L23/222 , H01L41/047 , H01L41/08 , H01L41/09 , H01L41/1132 , H01L41/187 , H01L41/1873 , H01L41/43 , H03H9/02031
Abstract: A lead-free piezoelectric ceramic composition includes a first crystal phase made of an alkali niobate/tantalate type perovskite oxide having piezoelectric properties, and a second crystal phase made of an M-Ti—O spinel compound (where the element M is a monovalent to quadrivalent element).
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公开(公告)号：US10347817B2
公开(公告)日：2019-07-09
申请号：US15129943
申请日：2015-03-05
Applicant: NGK SPARK PLUG CO., LTD.
Inventor： Hisashi Kozuka , Hideto Yamada , Takayuki Matsuoka , Kazuaki Kitamura , Masato Yamazaki , Toshiaki Kurahashi , Takashi Kasashima , Yasuyuki Okimura , Kazushige Ohbayashi
IPC: H01L41/18 , H01L41/187 , H01L41/43 , C04B35/495 , C04B35/64 , H01L41/047
Abstract: A lead-free piezoelectric ceramic composition including an alkali niobate/tantalate perovskite oxide main phase having piezoelectric properties and a different metal oxide. The mole ratio (Na/K) between Na (sodium) and K (potassium) in the main phase is 0.40 direction with the main phase represented as a pseudo-cubic crystal system. Also, the area ratio of a crystal phase reflecting the second spots in the main phase is 33% or less, and the maximum grain size of crystals reflecting the second spots in the main phase is 25 nm or less.
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Patent Agency Ranking
公开(公告)号：US10090646B2
公开(公告)日：2018-10-02
申请号：US15315581
申请日：2015-06-02
Applicant: NGK SPARK PLUG CO., LTD.
Inventor： Katsuya Takaoka , Kazuhiro Kurosawa , Kuniharu Tanaka , Hisashi Kozuka , Toshitaka Honda , Hirokazu Kurono , Haruki Yoshida , Hironori Uegaki
Abstract: Disclosed is a spark plug capable of suppressing high-frequency noise by improving the material of an electrical connection part between a center electrode and a metal terminal within an axial hole of an insulator. A spark plug has an electrical connection part arranged in an axial hole of an insulator to establish electrical connection between a center electrode and a metal terminal. The electrical connection part includes a conductor having a first crystal phase formed of a Fe-containing oxide and a second crystal phase formed of a conductive metal oxide of perovskite crystal structure.
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公开(公告)号：US09136033B2
公开(公告)日：2015-09-15
申请号：US14390786
申请日：2013-04-02
Applicant: NGK SPARK PLUG CO., LTD.
Inventor： Hisashi Kozuka , Tomoko Hishida , Hideto Yamada , Kazushige Ohbayashi
CPC classification number: H01B1/08 , C04B35/01 , C04B35/50 , C04B2235/3224 , C04B2235/3227 , C04B2235/3229 , C04B2235/3275 , C04B2235/3279 , C04B2235/72 , C04B2235/725 , C04B2235/768 , C04B2235/80 , H05K1/0306 , H05K1/09 , H05K2201/0326
Abstract: Provided is a sintered oxide compact that has high electric conductivity and a small B-value (temperature coefficient), and is suitable for use as an electrically conductive material, and a circuit board that uses the sintered oxide compact. The sintered oxide compact is represented by a composition formula: REaCobNicOx (where RE represents a rare earth element, a+b+c=1, and 1.3≦x≦1.7), the sintered oxide compact includes a perovskite phase with a perovskite-type oxide crystal structure, and the a, b, and c satisfy the following relationships: 0.459≦a≦0.535, 0.200≦b≦0.475, and 0.025≦c≦0.300.
Abstract translation: 提供具有高导电性和小B值（温度系数）的烧结氧化物压块，并且适合用作导电材料，以及使用烧结氧化物压块的电路板。 烧结氧化物压块由以下组成式表示：REaCobNicOx（其中RE表示稀土元素，a + b + c = 1，1.3＆nlE; x＆nlE; 1.7），烧结氧化物压块包括钙钛矿相， a，b和c满足以下关系：0.459＆nlE; a＆nlE; 0.535,0.200＆amp; nlE; b＆nlE; 0.475和0.025＆nlE; c＆nlE; 0.300。
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公开(公告)号：US20150099142A1
公开(公告)日：2015-04-09
申请号：US14390786
申请日：2013-04-02
Applicant: NGK SPARK PLUG CO., LTD.
Inventor： Hisashi Kozuka , Tomoko Hishida , Hideto Yamada , Kazushige Ohbayashi
CPC classification number: H01B1/08 , C04B35/01 , C04B35/50 , C04B2235/3224 , C04B2235/3227 , C04B2235/3229 , C04B2235/3275 , C04B2235/3279 , C04B2235/72 , C04B2235/725 , C04B2235/768 , C04B2235/80 , H05K1/0306 , H05K1/09 , H05K2201/0326
Abstract: Provided is a sintered oxide compact that has high electric conductivity and a small B-value (temperature coefficient), and is suitable for use as an electrically conductive material, and a circuit board that uses the sintered oxide compact. The sintered oxide compact is represented by a composition formula: REaCobNicOx (where RE represents a rare earth element, a+b+c=1, and 1.3≦x≦1.7), the sintered oxide compact includes a perovskite phase with a perovskite-type oxide crystal structure, and the a, b, and c satisfy the following relationships: 0.459≦a≦0.535, 0.200≦b≦0.475, and 0.025≦c≦0.300.
Abstract translation: 提供具有高导电性和小B值（温度系数）的烧结氧化物压块，并且适合用作导电材料，以及使用烧结氧化物压块的电路板。 烧结氧化物压块由以下组成式表示：REaCobNicOx（其中RE表示稀土元素，a + b + c = 1，1.3＆nlE; x＆nlE; 1.7），烧结氧化物压块包括钙钛矿相， a，b和c满足以下关系：0.459＆nlE; a＆nlE; 0.535,0.200＆amp; nlE; b＆nlE; 0.475和0.025＆nlE; c＆nlE; 0.300。
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9.发明授权公开(公告)号：US10379076B2
公开(公告)日：2019-08-13
申请号：US15572853
申请日：2016-03-28
Applicant: NGK SPARK PLUG CO., LTD.
Inventor： Hisashi Kozuka , Mina Sato , Yasuyuki Okimura , Kazushige Ohbayashi
Abstract: A gas sensor, characterized by having an electrode formed of a conductive oxide sintered body which contains a primary phase formed of a perovskite oxide containing at least La, Fe, and Ni; and a secondary phase formed of an La4M3O10 phase or an La3M2O7 phase (M=Co, Fe, Ni), wherein the conductive oxide sintered body has a conductivity of 300 S/cm or higher at room temperature.
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公开(公告)号：US10340441B2
公开(公告)日：2019-07-02
申请号：US15129877
申请日：2015-03-05
Applicant: NGK SPARK PLUG CO., LTD.
Inventor： Hisashi Kozuka , Hideto Yamada , Takayuki Matsuoka , Kazuaki Kitamura , Masato Yamazaki , Toshiaki Kurahashi , Takashi Kasashima , Yasuyuki Okimura , Kazushige Ohbayashi
IPC: H01L41/047 , H01L41/187 , H01L41/43 , C04B35/495 , C04B35/64
Abstract: A lead-free piezoelectric ceramic composition including an alkali niobate/tantalate perovskite oxide main phase having piezoelectric properties and a different metal oxide subphase. The mole ratio (Na/K) between Na (sodium) and K (potassium) in the main phase assumes a value in a range represented by 0.40 direction with the main phase represented as a pseudo-cubic crystal system.
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