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.

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.

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).

公开(公告)号：US09595814B2

公开(公告)日：2017-03-14

申请号：US15108115

申请日：2014-12-25

Applicant: NGK SPARK PLUG CO., LTD.

Inventor： Takashi Kasashima ,  Katsuya Takaoka ,  Kazuhiro Kurosawa ,  Kuniharu Tanaka ,  Toshitaka Honda ,  Hirokazu Kurono ,  Haruki Yoshida ,  Hironori Uegaki

IPC: H01T13/05 ,  H01T13/41 ,  F02P11/00

CPC classification number: H01T13/05 ,  F02P11/00 ,  H01T13/41

Abstract: A connection portion connecting a center electrode and a terminal metal fixture together in a through hole of the insulator includes a resistor and a magnetic substance structure including a magnetic substance and a conductor and being disposed on a leading end side or a rear end side of the resistor while being positioned away from the resistor. The connection portion further includes a first conductive sealing portion, a second conductive sealing portion and a third conductive sealing portion. The first conductive sealing portion is disposed on a leading end side of a first member and is in contact therewith. The second conductive sealing portion is disposed between the first member and a second member and is in contact with the first and second members. The third conductive sealing portion is disposed on a rear end side of the second member and is in contact therewith.

Abstract translation: 在绝缘体的通孔中连接中心电极和端子金属固定器的连接部分包括电阻器和包括磁性物质和导体的磁性物质结构，并且设置在所述绝缘体的前端侧或后端侧 电阻器，同时远离电阻器定位。 连接部分还包括第一导电密封部分，第二导电密封部分和第三导电密封部分。 第一导电密封部分设置在第一构件的前端侧并与其接触。 第二导电密封部分设置在第一构件和第二构件之间并且与第一构件和第二构件接触。 第三导电密封部分设置在第二构件的后端侧并与其接触。