Patents by Inventor Yasuyuki Inomata

Yasuyuki Inomata has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20230352245
    Abstract: A multilayer ceramic electronic device includes a multilayer chip having a plurality of dielectric layers and a plurality of internal electrode layers, one end of each of the plurality of internal electrode layers being exposed from the multilayer chip, an external electrode that is provided on an end face of the multilayer chip and is electrically connected to the one end of at least some of the plurality of internal electrode layers and includes a glass component, the end face being an end of the multilayer chip in a direction in which the plurality of internal electrode layers extend. The external electrode includes a crystal contacting or extending into the glass component at an interface between the external electrode and the end face of the multilayer chip. The crystal includes an element that is the same as at least one of elements included in the plurality of dielectric layers.
    Type: Application
    Filed: April 12, 2023
    Publication date: November 2, 2023
    Applicant: TAIYO YUDEN CO., LTD.
    Inventors: Yasuyuki INOMATA, Tetsuo SHIMURA, Masaki MOCHIGI
  • Publication number: 20230298821
    Abstract: A ceramic electronic device includes a dielectric layer and an internal electrode layer that are alternately stacked. The dielectric layer contains ceria zirconia solid solution and (Cax1Bax2Sr1-x1-x2)(TiyZr1-y)O3 (0.6?x1?0.9, 0?x2?0.1, 0?y?0.1) as a main component. In the dielectric layer, a concentration of the ceria zirconia solid solution is 0.5 mol % or more and 5.0 mol % or less when (Cax1Bax2Sr1-x1-x2)(TiyZr1-y)O3 is 100 mol %.
    Type: Application
    Filed: March 2, 2023
    Publication date: September 21, 2023
    Inventor: Yasuyuki INOMATA
  • Publication number: 20230081197
    Abstract: A ceramic electronic device includes a multilayer structure in which a plurality of dielectric layers and a plurality of internal electrode layers are alternately stacked. Each of the plurality of dielectric layers includes ceramic grains of a main component thereof expressed by (Ba1?x?yCaxSry)(Ti1?zZrz)O3 (0<x?0.2, 0?y?0.1, 0?z?0.1). D3<D1<D2 is satisfied when an average grain diameter of the ceramic grains of the main component of the plurality of dielectric layers in a section in which each two internal electrode layers is D1, an average grain diameter of the ceramic grains of the main component of first dielectric layers which are located at different height positions from the internal electrode layers is D2, an average grain diameter of the ceramic grains of the main component of second dielectric layers which are located at same height positions of the internal electrode layers is D3.
    Type: Application
    Filed: August 8, 2022
    Publication date: March 16, 2023
    Applicant: TAIYO YUDEN CO., LTD.
    Inventors: Yasuyuki INOMATA, Kazumichi HIROI
  • Publication number: 20230046855
    Abstract: A ceramic electronic device includes a dielectric layer and an internal electrode layer that are alternately stacked, wherein the dielectric layer contains yttria-stabilized zirconia and (Cax1Bax2Sr1-x1-x2)(TiyZr1-y)O3 (0.6?x1?0.9, 0?x2?0.1, 0?y?0.1) as a main component, and wherein, in the dielectric layer, a concentration of the yttria-stabilized zirconia when a total amount of Ti and Zr is 100 mol % is 0.5 mol % or more and 5.0 mol % or less.
    Type: Application
    Filed: July 13, 2022
    Publication date: February 16, 2023
    Inventor: Yasuyuki INOMATA
  • Patent number: 11581143
    Abstract: A multilayer ceramic capacitor (10) has a laminate body (20) constituted by dielectric layers (17) and internal electrode layers (18) stacked alternately. The dielectric layers (17) contain (Ba(1-x-y)CaxSry)m(Ti(1-z)Zrz)O3, where 0.03?x?0.16, 0?y?0.02, 0<z?0.02, 0.99?m?1.02, as a primary component, and an R oxide (R is a rare earth element) by 1.0 to 4.0 mol in equivalent element, an Mg compound by 0.2 to 2.5 mol in equivalent element, an Mn compound by 0.1 to 1.0 mol in equivalent element, a Zr compound by 0.1 to 2.0 mol in equivalent element, a V compound by 0.05 to 0.3 mol in equivalent element, and an Si compound by 0.2 to 5.0 mol in equivalent element, per 100 mol of the primary component. The multilayer ceramic capacitor can offer excellent DC bias properties and ensure high reliability.
    Type: Grant
    Filed: June 29, 2020
    Date of Patent: February 14, 2023
    Assignee: TAIYO YUDEN CO., LTD.
    Inventors: Yasuyuki Inomata, Tomoya Hagiwara, Kazumi Kaneda
  • Patent number: 11488783
    Abstract: A multilayer ceramic capacitor includes a laminated body in which dielectric layers and internal electrodes are laminated alternately. The dielectric layer includes a first phase that contains calcium strontium zirconate titanate as a main component thereof and a second phase that contains barium zirconate as a main component thereof. At a cross section of the dielectric layer, a line parallel to the direction in which the dielectric layers and the internal electrodes are laminated contacts the boundaries between the first phase and the second phase once or more on average, thereby the statistically averaged contact number N of such a line with the boundaries determined by a prescribed procedure being 1.0 or greater.
    Type: Grant
    Filed: June 25, 2020
    Date of Patent: November 1, 2022
    Assignee: TAIYO YUDEN CO., LTD.
    Inventors: Tetsuo Shimura, Yasuyuki Inomata
  • Patent number: 11282641
    Abstract: A ceramic electronic device includes a multilayer structure in which each of dielectric layers and each of internal electrode layers are alternately stacked, wherein a main component of the dielectric layers is (Ba, Sr, Ca)(Zr, Ti)O3, wherein a Ba concentration and a Ca concentration have variation in at least one of crystal grains in the dielectric layers.
    Type: Grant
    Filed: September 29, 2020
    Date of Patent: March 22, 2022
    Assignee: TAIYO YUDEN CO., LTD.
    Inventors: Tetsuo Shimura, Tomoya Hagiwara, Yasuyuki Inomata
  • Publication number: 20210118615
    Abstract: A ceramic electronic device includes a multilayer structure in which each of dielectric layers and each of internal electrode layers are alternately stacked, wherein a main component of the dielectric layers is (Ba, Sr, Ca)(Zr, Ti)O3, wherein a Ba concentration and a Ca concentration have variation in at least one of crystal grains in the dielectric layers.
    Type: Application
    Filed: September 29, 2020
    Publication date: April 22, 2021
    Applicant: TAIYO YUDEN CO., LTD.
    Inventors: Tetsuo SHIMURA, Tomoya HAGIWARA, Yasuyuki INOMATA
  • Patent number: 10903012
    Abstract: A ceramic capacitor includes a multilayer structure, wherein a main component of dielectric layers is ceramic expressed by a general formula AmBO3 (0.995?m?1.010), wherein the dielectric layers include a rare earth element Re as a first sub-component by 2.0 mol to 5.0 mol when converted into Re2O3/2, include Mg as a second sub-component by 1.0 mol to 3.0 mol when converted into MgO, include V as a third sub-component by 0.05 mol to 0.25 mol when converted into V2O5/2, include Si as a fourth sub-component by 0.5 mol to 5.0 mol when converted into SiO2, include an alkali earth metal element M as a fifth sub-component by 0.1 mol to 5.0 mol when converted into MCO3, on a presumption that an amount of the ceramic is 100 mol, wherein a ratio Si/V is 30 or less.
    Type: Grant
    Filed: January 17, 2019
    Date of Patent: January 26, 2021
    Assignee: TAIYO YUDEN CO., LTD.
    Inventors: Yasuyuki Inomata, Yousuke Nakada, Tetsuo Shimura
  • Publication number: 20210020364
    Abstract: A multilayer ceramic capacitor (10) has a laminate body (20) constituted by dielectric layers (17) and internal electrode layers (18) stacked alternately. The dielectric layers (17) contain (Ba(1-x-y)CaxSry)m(Ti(1-z)Zrz)O3, where 0.03?x?0.16, 0?y?0.02, 0<z?0.02, 0.99?m?1.02, as a primary component, and an R oxide (R is a rare earth element) by 1.0 to 4.0 mol in equivalent element, an Mg compound by 0.2 to 2.5 mol in equivalent element, an Mn compound by 0.1 to 1.0 mol in equivalent element, a Zr compound by 0.1 to 2.0 mol in equivalent element, a V compound by 0.05 to 0.3 mol in equivalent element, and an Si compound by 0.2 to 5.0 mol in equivalent element, per 100 mol of the primary component. The multilayer ceramic capacitor can offer excellent DC bias properties and ensure high reliability.
    Type: Application
    Filed: June 29, 2020
    Publication date: January 21, 2021
    Inventors: Yasuyuki INOMATA, Tomoya HAGIWARA, Kazumi KANEDA
  • Publication number: 20200411249
    Abstract: A multilayer ceramic capacitor includes a laminated body in which dielectric layers and internal electrodes are laminated alternately. The dielectric layer includes a first phase that contains calcium strontium zirconate titanate as a main component thereof and a second phase that contains barium zirconate as a main component thereof. At a cross section of the dielectric layer, a line parallel to the direction in which the dielectric layers and the internal electrodes are laminated contacts the boundaries between the first phase and the second phase once or more on average, thereby the statistically averaged contact number N of such a line with the boundaries determined by a prescribed procedure being 1.0 or greater.
    Type: Application
    Filed: June 25, 2020
    Publication date: December 31, 2020
    Applicant: TAIYO YUDEN CO., LTD.
    Inventors: Tetsuo Shimura, Yasuyuki Inomata
  • Patent number: 10879002
    Abstract: A ceramic capacitor includes: a dielectric layer of which a main component is a ceramic grain, wherein one or more pores are formed inside of the ceramic grains; and wherein an area ratio of the one or more pores with respect to a cross section of the ceramic grain is 0.03% to 0.20%, in a cross section of the dielectric layer.
    Type: Grant
    Filed: November 21, 2018
    Date of Patent: December 29, 2020
    Assignee: TAIYO YUDEN CO., LTD.
    Inventor: Yasuyuki Inomata
  • Patent number: 10854390
    Abstract: The present technology provides an electronic component with an interposer, including an electronic component and an interposer. An adhesive section is disposed in an opposing space between a main body of the electronic component and a substrate. When a direction in which first and second external electrodes of the electronic component face each other is a first direction, a direction orthogonal to the first direction is a second direction, and a direction in which the electronic component and the interposer face each other is a third direction, the adhesive section includes a plurality of unitary adhesive sections separated from each other, and the unitary adhesive sections are disposed in a two-dimensional array such that the number of unitary adhesive sections arrayed along the second direction is smaller on opposing sides in the first direction than at a center.
    Type: Grant
    Filed: March 18, 2019
    Date of Patent: December 1, 2020
    Assignee: Taiyo Yuden Co., Ltd.
    Inventors: Tetsuo Shimura, Yosuke Nakada, Yasuyuki Inomata
  • Patent number: 10672559
    Abstract: A multilayer ceramic capacitor includes: a multilayer structure in which each of a plurality of ceramic dielectric layers and each of a plurality of internal electrode layers are alternately stacked, the plurality of internal electrode layers being alternately exposed to a first edge face and a second edge face of the multilayer structure, wherein 1.5?Db/Da?10.0 is satisfied in a side margin region that covers edge portions to which the plurality of internal electrode layers extend toward two side faces other than the first edge face and the second edge face, when Da is an average grain diameter of a main component ceramic within 20 ?m from an edge of the plurality of internal electrode layers in the side margin region and Db is an average grain diameter of a main component ceramic within 20 ?m from a surface layer of the side margin region.
    Type: Grant
    Filed: July 25, 2018
    Date of Patent: June 2, 2020
    Assignee: TAIYO YUDEN CO., LTD.
    Inventors: Yasuyuki Inomata, Yasuhisa Kono, Mina Amano
  • Patent number: 10593478
    Abstract: A multilayer ceramic capacitor includes a multilayer structure wherein [t12×L1]/N?10, when a distance between a first edge that is an outermost edge of internal electrodes that is not connected to a first or second external electrode and a second edge that is an innermost edge of the internal electrodes that is not connected to the first or second external electrode is L1, each thickness of dielectric layers is t1, and a stack number of dielectric layers is N, wherein [t12×W1]/N?10, when a distance between a first edge that is positioned at outermost of the internal electrodes and a second edge that is positioned at innermost of the internal electrodes is W1, and wherein R is larger than W1, when a curvature radius of a corner of an edge of the internal electrodes is R.
    Type: Grant
    Filed: June 13, 2018
    Date of Patent: March 17, 2020
    Assignee: TAIYO YUDEN CO., LTD.
    Inventors: Yasuyuki Inomata, Masaki Mochigi
  • Patent number: 10475581
    Abstract: A multilayer ceramic capacitor includes: a multilayer chip in which each of dielectric layers and each of internal electrode layers are alternately stacked and are alternately exposed to two edge faces thereof; and external electrodes formed on the two edge faces; wherein: the external electrodes have a structure in which a plated layer is formed on a ground layer whose main component is a metal or an alloy, a thermal expansion coefficient of the metal being larger than that of a main ceramic component of the dielectric layer, the ground layer including a ceramic additive; outermost layers of the multilayer chip are cover layers whose main component is a main component of the dielectric layer; and thermal expansion coefficients satisfy a relationship of, the main component of the ground layer>the main component of the cover layers>the ceramic additive.
    Type: Grant
    Filed: December 8, 2017
    Date of Patent: November 12, 2019
    Assignee: TAIYO YUDEN CO., LTD.
    Inventors: Kazumi Kaneda, Yasuyuki Inomata, Mikio Tahara
  • Publication number: 20190287723
    Abstract: The present technology provides an electronic component with an interposer, including an electronic component and an interposer. An adhesive section is disposed in an opposing space between a main body of the electronic component and a substrate. When a direction in which first and second external electrodes of the electronic component face each other is a first direction, a direction orthogonal to the first direction is a second direction, and a direction in which the electronic component and the interposer face each other is a third direction, the adhesive section includes a plurality of unitary adhesive sections separated from each other, and the unitary adhesive sections are disposed in a two-dimensional array such that the number of unitary adhesive sections arrayed along the second direction is smaller on opposing sides in the first direction than at a center.
    Type: Application
    Filed: March 18, 2019
    Publication date: September 19, 2019
    Inventors: TETSUO SHIMURA, YOSUKE NAKADA, YASUYUKI INOMATA
  • Publication number: 20190228911
    Abstract: A ceramic capacitor includes a multilayer structure, wherein a main component of dielectric layers is ceramic expressed by a general formula AmBO3 (0.995?m?1.010), wherein the dielectric layers include a rare earth element Re as a first sub-component by 2.0 mol to 5.0 mol when converted into Re2O3/2, include Mg as a second sub-component by 1.0 mol to 3.0 mol when converted into MgO, include V as a third sub-component by 0.05 mol to 0.25 mol when converted into V2O5/2, include Si as a fourth sub-component by 0.5 mol to 5.0 mol when converted into SiO2, include an alkali earth metal element M as a fifth sub-component by 0.1 mol to 5.0 mol when converted into MCO3, on a presumption that an amount of the ceramic is 100 mol, wherein a ratio Si/V is 30 or less.
    Type: Application
    Filed: January 17, 2019
    Publication date: July 25, 2019
    Inventors: Yasuyuki INOMATA, Yousuke NAKADA, Tetsuo SHIMURA
  • Publication number: 20190172640
    Abstract: A ceramic capacitor includes: a dielectric layer of which a main component is a ceramic grain, wherein one or more pores are formed inside of the ceramic grains; and wherein an area ratio of the one or more pores with respect to a cross section of the ceramic grain is 0.03% to 0.20%, in a cross section of the dielectric layer.
    Type: Application
    Filed: November 21, 2018
    Publication date: June 6, 2019
    Inventor: Yasuyuki INOMATA
  • Publication number: 20190035554
    Abstract: A multilayer ceramic capacitor includes: a multilayer structure in which each of a plurality of ceramic dielectric layers and each of a plurality of internal electrode layers are alternately stacked, the plurality of internal electrode layers being alternately exposed to a first edge face and a second edge face of the multilayer structure, wherein 1.5?Db/Da?10.0 is satisfied in a side margin region that covers edge portions to which the plurality of internal electrode layers extend toward two side faces other than the first edge face and the second edge face, when Da is an average grain diameter of a main component ceramic within 20 ?m from an edge of the plurality of internal electrode layers in the side margin region and Db is an average grain diameter of a main component ceramic within 20 ?m from a surface layer of the side margin region.
    Type: Application
    Filed: July 25, 2018
    Publication date: January 31, 2019
    Inventors: Yasuyuki INOMATA, Yasuhisa KONO, Mina AMANO