Patents by Inventor Yukihiro Konishi

Yukihiro Konishi 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).

  • Patent number: 11145800
    Abstract: A multilayer pyroelectric element includes: a laminate body constituted by multiple pyroelectric body layers laminated in their thickness direction; internal electrode layers which are provided between the pyroelectric body layers, and one ends of which extend to the outer peripheries of the adjoining pyroelectric body layers; and external electrodes that connect the alternate internal electrode layers together at the one ends, wherein “x1>x3 AND x2>x3” are satisfied wherein x1 is a distance between a pair of first faces crossing at right angles with the laminating direction of the pyroelectric body layers, x2 is a distance between a pair of second faces crossing at right angles with the first faces and running parallel with the laminating direction of the pyroelectric body layers, and x3 a is a distance between a pair of third faces crossing at right angles with the first faces and also with the second faces.
    Type: Grant
    Filed: July 24, 2018
    Date of Patent: October 12, 2021
    Assignee: TAIYO YUDEN., CO. LTD.
    Inventors: Yuuhei Ueyama, Hiroyuki Shimizu, Yukihiro Konishi
  • Publication number: 20210233711
    Abstract: A multilayer ceramic capacitor includes an element body of roughly rectangular solid shape which is constituted by dielectric layers alternately stacked with internal electrode layers having different polarities, with a pair of cover layers formed on it to cover the top and bottom faces in the direction of lamination of the foregoing, and which has a pair of principal faces, a pair of end faces, and a pair of side faces, wherein external electrodes are formed on the pair of end faces and at least one of the pair of principal faces of the element body, and Tt representing the thickness of the external electrode and Tc representing the thickness of the cover layer satisfy the relationship of 1/30?Tt/Tc?4/5, and the thickness of the cover layers, or Tc, is 10 ?m or more but 30 ?m or less.
    Type: Application
    Filed: April 9, 2021
    Publication date: July 29, 2021
    Inventors: Shohei KITAMURA, Yukihiro KONISHI, Kotaro MIZUNO, Yoichi KATO, Yusuke KOWASE, Toru MAKINO, Yoshinori TANAKA
  • Patent number: 11017949
    Abstract: A multi-layer ceramic capacitor according to an embodiment of the present invention includes a multi-layer, side margins and offset sections. The multi-layer includes internal electrodes and dielectric layers alternately laminated. The side margins are configured of a dielectric and disposed to cover side faces of the multi-layer. The offset sections are made with amorphous areas or gap areas. The offset sections are formed between the internal electrodes and the side margins such that ends at side faces of the internal electrodes are offset from the side faces to an inward direction of the multi-layer.
    Type: Grant
    Filed: May 27, 2016
    Date of Patent: May 25, 2021
    Assignee: Taiyo Yuden Co., Ltd.
    Inventors: Yoichi Kato, Kotaro Mizuno, Yukihiro Konishi, Yasunari Kato, Yosuke Sato, Hidenori Wakayanagi, Joji Kobayashi, Toshimitsu Kogure
  • Patent number: 11004607
    Abstract: A method for manufacturing a multilayer ceramic capacitor includes: producing a plurality of dielectric green sheets; producing therefrom a plurality of internal electrode-printed green sheets; producing therefrom a plurality of individually cut unsintered laminates by stacking some of the plurality of dielectric green sheets, as cover layers, and the plurality of internal electrode-printed green sheets together; producing therefrom element body precursors by applying a ceramic paste to side faces of the unsintered laminates for forming side margins thereon, wherein an application thickness of the ceramic paste is adjusted in a manner such that a thickness of the side margins is greater than a thickness of the cover layers in the final product; producing therefrom element bodies by sintering; and forming external electrodes on at least one of principal faces and on both end faces of the element bodies.
    Type: Grant
    Filed: February 23, 2018
    Date of Patent: May 11, 2021
    Assignee: TAIYO YUDEN CO., LTD.
    Inventors: Shohei Kitamura, Yukihiro Konishi, Kotaro Mizuno, Yoichi Kato, Yusuke Kowase, Toru Makino, Yoshinori Tanaka
  • Publication number: 20200287124
    Abstract: A piezoelectric ceramic, which does not contain lead as a constituent element, is characterized in that: its primary component is a perovskite compound expressed by the composition formula (Bi0.5?x/2Na0.5?x/2Bax)(Ti1?yMny)O3 (where 0.01?x?0.25, 0.001?y?0.020); and the coefficient of variation (CV) in grain size among the grains contained therein is 35 percent or lower. The piezoelectric ceramic presents an improved dielectric loss tangent tan ?.
    Type: Application
    Filed: February 25, 2020
    Publication date: September 10, 2020
    Inventors: Yuuhei UEYAMA, Tomohiro HARADA, Hiroyuki SHIMIZU, Sumiaki KISHIMOTO, Yukihiro KONISHI
  • Publication number: 20200227616
    Abstract: A multilayer pyroelectric element includes: a laminate body constituted by multiple pyroelectric body layers laminated in their thickness direction; internal electrode layers which are provided between the pyroelectric body layers, and one ends of which extend to the outer peripheries of the adjoining pyroelectric body layers; and external electrodes that connect the alternate internal electrode layers together at the one ends, wherein “x1>x3 AND x2>x3” are satisfied wherein x1 is a distance between a pair of first faces crossing at right angles with the laminating direction of the pyroelectric body layers, x2 is a distance between a pair of second faces crossing at right angles with the first faces and running parallel with the laminating direction of the pyroelectric body layers, and x3a is a distance between a pair of third faces crossing at right angles with the first faces and also with the second faces.
    Type: Application
    Filed: July 24, 2018
    Publication date: July 16, 2020
    Inventors: Yuuhei UEYAMA, Hiroyuki SHIMIZU, Yukihiro KONISHI
  • Publication number: 20200144645
    Abstract: A fuel cell includes: a solid oxide electrolyte layer having oxygen ion conductivity; a first electrode layer that is provided on a first face of the solid oxide electrolyte layer; and a second electrode layer that is provided on a second face of the solid oxide electrolyte layer, wherein a main component of a material having oxygen ion conductivity and a main component of a material having electron conductivity are common with each other between the first electrode layer and the second electrode layer.
    Type: Application
    Filed: October 18, 2019
    Publication date: May 7, 2020
    Inventors: Xinyu LI, Chie KAWAMURA, Yukihiro KONISHI
  • Patent number: 10515764
    Abstract: A multilayer ceramic capacitor includes an element body of roughly rectangular solid shape which is constituted by dielectric layers alternately stacked with internal electrode layers having different polarities and which has a pair of principle faces, a pair of end faces, and a pair of side faces, wherein the multilayer ceramic capacitor is such that: external electrodes are formed on the pair of end faces and one principle face of the element body; and on a cross section taken in parallel with one end face of the multilayer ceramic capacitor near the end face, the ratio of area A constituted by the internal electrode layers connected to the external electrode on this end face side and the dielectric layers present between the internal electrode layers, and area B covering the part of the section excluding the external electrodes, A/B, is 0.92 or more.
    Type: Grant
    Filed: November 8, 2018
    Date of Patent: December 24, 2019
    Assignee: TAIYO YUDEN CO., LTD.
    Inventors: Kotaro Mizuno, Yukihiro Konishi, Shohei Kitamura, Yoichi Kato, Yusuke Kowase, Toru Makino, Yoshinori Tanaka
  • Patent number: 10490352
    Abstract: A multi-layer ceramic capacitor includes a multi-layer unit, side margins, and bonding units. The multi-layer unit includes ceramic layers laminated in a first direction and internal electrodes disposed between the ceramic layers. The side margins cover the multi-layer unit from a second direction orthogonal to the first direction. The bonding units are each disposed between the multi-layer unit and each of the side margins and have higher silicon content than the ceramic layers and the side margins.
    Type: Grant
    Filed: August 21, 2018
    Date of Patent: November 26, 2019
    Assignee: TAIYO YUDEN CO., LTD.
    Inventors: Yoichi Kato, Kotaro Mizuno, Yukihiro Konishi
  • Publication number: 20190237656
    Abstract: A multi-layer piezoelectric ceramic component includes: a piezoelectric ceramic body having a cuboid shape having upper and lower surfaces facing in a thickness direction, first and second end surfaces facing in a length direction, and a pair of side surfaces facing in a width direction; first internal electrodes formed in the piezoelectric ceramic body and drawn to the first end surface; second internal electrodes formed in the piezoelectric ceramic body and drawn to the second end surface; a first terminal electrode formed on the first end surface; and a second terminal electrode formed on the second end surface, the first and second internal electrodes each having a width equal to a distance between the pair of side surfaces, at least one of the pair of side surfaces including a groove extending in non-parallel with the length direction.
    Type: Application
    Filed: January 25, 2019
    Publication date: August 1, 2019
    Inventors: Takayuki GOTO, Hiroyuki SHIMIZU, Sumiaki KISHIMOTO, Yukihiro KONISHI
  • Publication number: 20190237653
    Abstract: A multi-layer piezoelectric ceramic component includes: a piezoelectric ceramic body having a cuboid shape, having upper and lower surfaces facing in a thickness direction, first and second end surfaces facing in a length direction, and a pair of side surfaces facing in a width direction, and including first and second regions; first internal electrodes in the first region; second internal electrodes in the second region; third internal electrodes in the first and second regions; a first terminal electrode formed on the first end surface and electrically connected to the first internal electrodes; a second terminal electrode formed on the first end surface and electrically connected to the second internal electrodes; and a third terminal electrode formed on the second end surface and electrically connected to the third internal electrodes, the first, second, and third internal electrodes each having a width equal to a distance between the pair of side surfaces.
    Type: Application
    Filed: January 25, 2019
    Publication date: August 1, 2019
    Inventors: Sumiaki KISHIMOTO, Hiroyuki SHIMIZU, Tomohiro HARADA, Takayuki GOTO, Yukihiro KONISHI
  • Publication number: 20190237657
    Abstract: A method of producing a multi-layer piezoelectric ceramic component includes: laminating ceramic green sheets to form a laminate, each of the ceramic green sheets being made of a piezoelectric ceramic material and including an electrically conductive pattern, the electrically conductive pattern including a base metal, being to be an internal electrode, and being formed on an inner side of an outer edge of the ceramic green sheet; sintering the laminate; and cutting the sintered laminate and causing the internal electrodes to be exposed.
    Type: Application
    Filed: January 25, 2019
    Publication date: August 1, 2019
    Inventors: Tomohiro HARADA, Hiroyuki SHIMIZU, Takayuki GOTO, Sumiaki KISHIMOTO, Yukihiro KONISHI
  • Patent number: 10366831
    Abstract: A multilayer capacitor has dielectric layers and multiple internal electrode layers. The laminate includes a stack of multiple dielectric layers made of dielectric material and has a first principal face and a second principal face on the opposite side of the first principal face. In an embodiment, the multiple internal electrode layers have Ni as a primary component, contain at least one metal element selected from Pt, Ru, Rh, Re, Ir, Os, and Pd, and are arranged in parallel with the first principal face and second principal face inside the laminate in such a way that they alternate from the opposing sides with the dielectric layers placed in between, wherein each of the internal electrode layer closest to the first principal face and the internal electrode layer closest to the second principal face has a distance of 30 ?m or less from the corresponding principal face.
    Type: Grant
    Filed: January 22, 2016
    Date of Patent: July 30, 2019
    Assignee: TAIYO YUDEN CO., LTD.
    Inventors: Kotaro Mizuno, Yoichi Kato, Yukihiro Konishi
  • Publication number: 20190164698
    Abstract: A method of producing a multi-layer ceramic electronic component includes: preparing a multi-layer sheet including laminated ceramic sheets, and internal electrodes disposed between the ceramic sheets; cutting the multi-layer sheet to produce multi-layer chips each having side surfaces from which the internal electrodes are exposed; smoothing the side surfaces of the multi-layer chips; and providing side margins to the smoothed side surfaces of the multi-layer chips.
    Type: Application
    Filed: January 31, 2019
    Publication date: May 30, 2019
    Inventors: Yoichi Kato, Kotaro Mizuno, Yukihiro Konishi
  • Publication number: 20190080848
    Abstract: A multilayer ceramic capacitor includes an element body of roughly rectangular solid shape which is constituted by dielectric layers alternately stacked with internal electrode layers having different polarities and which has a pair of principle faces, a pair of end faces, and a pair of side faces, wherein the multilayer ceramic capacitor is such that: external electrodes are formed on the pair of end faces and one principle face of the element body; and on a cross section taken in parallel with one end face of the multilayer ceramic capacitor near the end face, the ratio of area A constituted by the internal electrode layers connected to the external electrode on this end face side and the dielectric layers present between the internal electrode layers, and area B covering the part of the section excluding the external electrodes, A/B, is 0.92 or more.
    Type: Application
    Filed: November 8, 2018
    Publication date: March 14, 2019
    Inventors: Kotaro MIZUNO, Yukihiro KONISHI, Shohei KITAMURA, Yoichi KATO, Yusuke KOWASE, Toru MAKINO, Yoshinori TANAKA
  • Patent number: 10224148
    Abstract: A multi-layer ceramic capacitor includes a multi-layer unit, a side margin, and a bonding unit. The multi-layer unit includes ceramic layers and internal electrodes. The ceramic layers are made of first ceramics and laminated in a first direction, the first ceramics having a first average crystal grain diameter. The internal electrodes are disposed between the ceramic layers. The side margin is made of second ceramics and covers the multi-layer unit from a second direction orthogonal to the first direction, the second ceramics having a second average crystal grain diameter. The bonding unit is made of third ceramics and disposed between the multi-layer unit and the side margin, the third ceramics having a third average crystal grain diameter that is larger than the first average crystal grain diameter and the second average crystal grain diameter.
    Type: Grant
    Filed: June 14, 2018
    Date of Patent: March 5, 2019
    Assignee: Taiyo Yuden Co., Ltd.
    Inventors: Kotaro Mizuno, Yukihiro Konishi, Yoichi Kato
  • Publication number: 20190044053
    Abstract: A multilayer piezoelectric element includes a ceramic body formed by a piezoelectric ceramic, and having first and second end face facing a longitudinal direction, first and second principal faces facing a thickness direction perpendicular to the longitudinal direction. A pair of external electrodes cover the first and second end faces, extend from the first and second end faces onto the first principal face via ridge parts connecting the end faces with the principal faces, and project in the thickness direction on the first principal face. Multiple internal electrodes are stacked inside the ceramic body and are connected alternately to the pair of external electrodes along the thickness direction. A surface electrode is provided on at least one of the first and second principal faces, and connected to the external electrode different from the one to which the internal electrode adjacent in the thickness direction is connected.
    Type: Application
    Filed: July 30, 2018
    Publication date: February 7, 2019
    Inventors: Hiroshi HAMADA, Hiroyuki SHIMIZU, Sumiaki KISHIMOTO, Yukihiro MATSUI, Shigeo ISHII, Tomohiro HARADA, Yukihiro KONISHI
  • Publication number: 20190027677
    Abstract: A multilayer piezoelectric element includes a ceramic base body, a pair of external electrodes, multiple internal electrodes, and surface electrodes. The ceramic base body is formed by a piezoelectric ceramic. The pair of external electrodes cover a pair of end faces. The multiple internal electrodes are stacked inside the ceramic base body along a thickness direction crossing at right angles with a longitudinal direction, and connected alternately to the pair of external electrodes in the thickness direction. The surface electrodes are provided on a pair of principal faces, respectively, and are each connected to the external electrode different from the one to which the internal electrode adjacent in the thickness direction is connected. The pair of external electrodes have a higher porosity than the surface electrodes.
    Type: Application
    Filed: July 18, 2018
    Publication date: January 24, 2019
    Inventors: Sumiaki KISHIMOTO, Hiroyuki SHIMIZU, Tomohiro HARADA, Yukihiro KONISHI
  • Publication number: 20190027678
    Abstract: A multilayer piezoelectric element includes a ceramic base body, a pair of external electrodes, multiple internal electrodes, and surface electrodes. The pair of external electrodes cover a pair of end faces and extend from the pair of end faces along a pair of principal faces and a pair of side faces. The multiple internal electrodes are stacked inside the ceramic base body along the thickness direction, and are connected alternately to one or the other of the pair of external electrodes along the thickness direction. The surface electrodes extend from the pair of external electrodes along the pair of principal faces, and are each divided in the longitudinal direction at a position near, of the pair of external electrodes, the external electrode to which the internal electrode adjacent to the principal face is connected.
    Type: Application
    Filed: July 12, 2018
    Publication date: January 24, 2019
    Inventors: Sumiaki KISHIMOTO, Hiroshi HAMADA, Hiroyuki SHIMIZU, Yukihiro MATSUI, Tomohiro HARADA, Yukihiro KONISHI
  • Publication number: 20190006105
    Abstract: A multi-layer ceramic capacitor includes a multi-layer unit, side margins, and bonding units. The multi-layer unit includes ceramic layers laminated in a first direction and internal electrodes disposed between the ceramic layers. The side margins cover the multi-layer unit from a second direction orthogonal to the first direction. The bonding units are each disposed between the multi-layer unit and each of the side margins and have higher silicon content than the ceramic layers and the side margins.
    Type: Application
    Filed: August 21, 2018
    Publication date: January 3, 2019
    Inventors: YOICHI KATO, KOTARO MIZUNO, YUKIHIRO KONISHI