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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：US11945987B2
公开(公告)日：2024-04-02
申请号：US16973367
申请日：2019-07-17
Applicant: NGK SPARK PLUG CO., LTD.
Inventor： Shohei Takaku , Yusuke Katsu , Tsuneyuki Ito , Toshiaki Kurahashi , Hideto Yamada
CPC classification number: C09K11/7774 , C04B35/10 , C09K11/02 , H01L33/502 , C04B2235/3222 , H01L2933/0041
Abstract: In one aspect of the present disclosure, there is provided an optical wavelength conversion member including a polycrystalline ceramic sintered body containing, as main components, Al2O3 crystal grains and crystal grains represented by formula X3Al5O12:Ce. In the optical wavelength conversion member 9, atoms of element X are present also in an Al2O3 crystal grain adjacent to the interface between the Al2O3 crystal grain and an X3Al5O12:Ce crystal grain.
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公开(公告)号：US11560513B2
公开(公告)日：2023-01-24
申请号：US16973322
申请日：2019-07-01
Applicant: NGK SPARK PLUG CO., LTD.
Inventor： Shohei Takaku , Yusuke Katsu , Tsuneyuki Ito , Toshiaki Kurahashi , Hideto Yamada
IPC: C09K11/02 , F21V9/30 , C04B35/117 , C09K11/77 , F21Y115/30
Abstract: One aspect of the disclosure provides an optical wavelength conversion member including a polycrystalline ceramic sintered body containing, as main components, Al2O3 crystal grains and crystal grains represented by formula (Y,A)3B5O12:Ce. In the optical wavelength conversion member, a (Y,A)3B5O12:Ce crystal grain has a region wherein the A concentration of a peripheral portion of the (Y,A)3B5O12:Ce crystal grain is higher than that of an interior portion of the (Y,A)3B5O12:Ce crystal grain. Thus, the optical wavelength conversion member exhibits high fluorescence intensity (i.e., high emission intensity) and high heat resistance (i.e., low likelihood of temperature quenching). The optical wavelength conversion member has a structure wherein the element A concentration of a peripheral portion of a (Y,A)3B5O12:Ce crystal grain differs from that in an interior portion of the crystal grain. This structure can achieve a ceramic fluorescent body exhibiting superior fluorescent characteristics and superior thermal characteristics with varied colors of emitted light.
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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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Patent Agency Ranking
公开(公告)号：US09871187B2
公开(公告)日：2018-01-16
申请号：US14682631
申请日：2015-04-09
Applicant: NGK SPARK PLUG CO., LTD.
Inventor： Masato Yamazaki , Takayuki Matsuoka , Yoshiteru Honda , Kazuaki Kitamura , Hisashi Kozuka , Toshiaki Kurahashi , Yasuyuki Okimura , Hideto Yamada , Kazushige Ohbayashi
IPC: H01L41/187 , H01L41/43 , C04B35/495
CPC classification number: H01L41/1873 , C04B35/495 , C04B2235/3201 , C04B2235/3203 , C04B2235/3206 , C04B2235/3208 , C04B2235/3213 , C04B2235/3215 , C04B2235/3217 , C04B2235/3225 , C04B2235/3232 , C04B2235/3244 , C04B2235/3251 , C04B2235/3258 , C04B2235/3262 , C04B2235/3272 , C04B2235/3275 , C04B2235/3284 , C04B2235/602 , C04B2235/768 , C04B2235/80 , H01L41/43
Abstract: A lead-free piezo-electric porcelain composition which contains a main phase having voids and which is formed of a first crystal phase composed of an alkali niobate/tantalate-based perovskite oxide having piezo-electric characteristics; and a sub-phase containing a second crystal phase composed of an A2B6O13-based compound (where the element A is a monovalent element and the element B is one or more divalent to hexavalent elements). The sub-phase fills voids present in the main phase.
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公开(公告)号：US10348061B2
公开(公告)日：2019-07-09
申请号：US16018949
申请日：2018-06-26
Applicant: NGK SPARK PLUG CO., LTD.
Inventor： Hideto Yamada , Haruki Yoshida , Kuniharu Tanaka , Michitaka Yamada , Yusuke Nomura
IPC: H01T13/38 , H01T13/60 , B82Y30/00 , C04B35/64 , C04B35/111 , C04B35/117 , C04B35/626
Abstract: The spark plug includes an insulator formed of an alumina-based sintered body, and the insulator contains Si, Ba, and a rare earth element. In an analysis of the insulator by using a scanning transmission electron microscope having an electron-probe diameter of 1 nm, Si and a rare earth element are detected at a crystal grain boundary having a thickness of 15 nm or less, a content of an alkaline earth metal is less than a detection limit at the crystal grain boundary, and a diffraction spot is present in an electron diffraction pattern of a portion where Ba is detected.
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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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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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