Patents by Inventor Atsuhiro Yanagisawa

Atsuhiro Yanagisawa 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: 11264168
    Abstract: A multilayer ceramic capacitor includes: a multilayer chip having a parallelepiped shape in which each of a plurality of dielectric layers and each of a plurality of internal electrode layers are alternately stacked and each of the internal electrode layers is alternately exposed to two end faces of the multilayer chip, a main component of the plurality of dielectric layers being a ceramic; and a pair of external electrodes that are formed on the two end faces; wherein: the pair of external electrodes have a structure in which a plated layer is formed on a ground layer; a main component of the ground layer is a metal or an alloy including at least one of Ni and Cu; and at least a part of a surface of the ground layer on a side of the plated layer includes an interposing substance including Mo.
    Type: Grant
    Filed: May 20, 2019
    Date of Patent: March 1, 2022
    Assignee: TAIYO YUDEN CO., LTD.
    Inventors: Haruna Ubukata, Satoko Namiki, Atsuhiro Yanagisawa, Tomonori Yamatoh
  • Patent number: 11011312
    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 the internal electrode layers are alternately exposed to two end faces; and external electrodes formed on the two end faces; wherein: the external electrodes have a structure in which a plated layer is formed on a ground layer including Mo; and “M?0.003185×(Ew×Et)?0.5921 is satisfied when “Et” is a height from a bottom one of the internal electrode layers to a top one of the internal electrode layers, “Ew” is a width of the internal electrode layers in a direction in which side faces of the multilayer chip face with each other, and “M” is a Mo concentration (atm %) with respect to a main component ceramic of a total of the multilayer chip and the pair of external electrodes.
    Type: Grant
    Filed: June 6, 2019
    Date of Patent: May 18, 2021
    Assignee: TAIYO YUDEN CO., LTD.
    Inventors: Daisuke Iwai, Atsuhiro Yanagisawa, Yoshinori Shibata, Masumi Ishii, Takeshi Nosaki, Hiroyuki Moteki
  • Patent number: 11004605
    Abstract: A multilayer ceramic capacitor includes: a ceramic multilayer structure having a structure in which each of ceramic dielectric layers and each of internal electrode layers are alternately stacked and are alternately exposed to two edge faces of the ceramic multilayer structure, a main phase of the plurality of ceramic dielectric layers having a perovskite structure that includes Ca and Zr and is expressed by a general formula ABO3; and a pair of external electrodes that are formed on the two edge faces, wherein 300×TE/TA?12?30 is satisfied when a volume TA is a length CL×a width CW×a thickness CT of the ceramic multilayer structure and a volume TE is a length EL×a width EW×a thickness ET×a stacked number of the plurality of internal electrode layers in a capacity region.
    Type: Grant
    Filed: January 28, 2019
    Date of Patent: May 11, 2021
    Assignee: TAIYO YUDEN CO., LTD.
    Inventors: Michio Oshima, Atsuhiro Yanagisawa, Yoshinori Shibata, Daisuke Iwai, Hiroyuki Moteki
  • Patent number: 10971302
    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 the internal electrode layers are alternately exposed to two end faces; and external electrodes formed on the two end faces; wherein: a relationship “M??0.00002×EM+0.0012” is satisfied, when a length of end margins in a direction in which the two end faces face with each other is EM [?m] and a ratio of Mo [atm %] to a B site element [atm %] of a main component ceramic in the end margins is M, wherein the end margin is a region, in which internal electrode layers connected to one of the external electrodes without sandwiching internal electrode layers connected to the other of the external electrode, face with each other, in the multilayer chip.
    Type: Grant
    Filed: June 11, 2019
    Date of Patent: April 6, 2021
    Assignee: TAIYO YUDEN CO., LTD.
    Inventors: Atsuhiro Yanagisawa, Yoshinori Shibata, Mikio Tahara
  • Publication number: 20190385794
    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 the internal electrode layers are alternately exposed to two end faces; and external electrodes formed on the two end faces; wherein: a relationship “M??0.00002×EM+0.0012” is satisfied, when a length of end margins in a direction in which the two end faces face with each other is EM [?m] and a concentration of Mo with respect to a B site element of a main component ceramic of the end margins is M [atm %], wherein the end margin is a region, in which internal electrode layers connected to one of the external electrodes without sandwiching internal electrode layers connected to the other of the external electrode, face with each other, in the multilayer chip.
    Type: Application
    Filed: June 11, 2019
    Publication date: December 19, 2019
    Inventors: Atsuhiro YANAGISAWA, Yoshinori SHIBATA, Mikio TAHARA
  • Publication number: 20190378655
    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 the internal electrode layers are alternately exposed to two end faces; and external electrodes formed on the two end faces; wherein: the external electrodes have a structure in which a plated layer is formed on a ground layer including Mo; and “M?0.003185×(Ew×Et)?0.5921 is satisfied when “Et” is a height from a bottom one of the internal electrode layers to a top one of the internal electrode layers, “Ew” is a width of the internal electrode layers in a direction in which side faces of the multilayer chip face with each other, and “M” is a Mo concentration (atm %) with respect to a main component ceramic of a total of the multilayer chip and the pair of external electrodes.
    Type: Application
    Filed: June 6, 2019
    Publication date: December 12, 2019
    Inventors: Daisuke IWAI, Atsuhiro YANAGISAWA, Yoshinori SHIBATA, Masumi ISHII, Takeshi NOSAKI, Hiroyuki MOTEKI
  • Publication number: 20190371526
    Abstract: A multilayer ceramic capacitor includes: a multilayer chip having a parallelepiped shape in which each of a plurality of dielectric layers and each of a plurality of internal electrode layers are alternately stacked and each of the internal electrode layers is alternately exposed to two end faces of the multilayer chip, a main component of the plurality of dielectric layers being a ceramic; and a pair of external electrodes that are formed on the two end faces; wherein: the pair of external electrodes have a structure in which a plated layer is formed on a ground layer; a main component of the ground layer is a metal or an alloy including at least one of Ni and Cu; and at least a part of a surface of the ground layer on a side of the plated layer includes an interposing substance including Mo.
    Type: Application
    Filed: May 20, 2019
    Publication date: December 5, 2019
    Inventors: Haruna UBUKATA, Satoko NAMIKI, Atsuhiro YANAGISAWA, Tomonori YAMATOH
  • Publication number: 20190244758
    Abstract: A multilayer ceramic capacitor includes: a ceramic multilayer structure having a structure in which each of ceramic dielectric layers and each of internal electrode layers are alternately stacked and are alternately exposed to two edge faces of the ceramic multilayer structure, a main phase of the plurality of ceramic dielectric layers having a perovskite structure that includes Ca and Zr and is expressed by a general formula ABO3; and a pair of external electrodes that are formed on the two edge faces, wherein 300×TE/TA?12?30 is satisfied when a volume TA is a length CL×a width CW×a thickness CT of the ceramic multilayer structure and a volume TE is a length EL×a width EW×a thickness ET×a stacked number of the plurality of internal electrode layers in a capacity region.
    Type: Application
    Filed: January 28, 2019
    Publication date: August 8, 2019
    Inventors: Michio OSHIMA, Atsuhiro YANAGISAWA, Yoshinori SHIBATA, Daisuke IWAI, Hiroyuki MOTEKI
  • Patent number: 10290424
    Abstract: A multilayer ceramic capacitor includes: a multilayer chip having a parallelepiped shape in which each of a plurality of dielectric layers and each of a plurality of internal electrode layers are alternately stacked and are alternately exposed to two edge faces of the multilayer chip, a main component of the plurality of dielectric layers being a ceramic; and a pair of external electrodes that are formed on the two edge faces; wherein: the pair of external electrode have a structure in which a plated layer is formed on a ground layer; a main component of the ground layer is a metal or an alloy including at least one of Ni and Cu; and the ground layer includes Mo.
    Type: Grant
    Filed: December 8, 2017
    Date of Patent: May 14, 2019
    Assignee: TAIYO YUDEN CO., LTD.
    Inventors: Atsuhiro Yanagisawa, Yoshinori Shibata, Mikio Tahara
  • Publication number: 20180174752
    Abstract: A multilayer ceramic capacitor includes: a multilayer chip having a parallelepiped shape in which each of a plurality of dielectric layers and each of a plurality of internal electrode layers are alternately stacked and are alternately exposed to two edge faces of the multilayer chip, a main component of the plurality of dielectric layers being a ceramic; and a pair of external electrodes that are formed on the two edge faces; wherein: the pair of external electrode have a structure in which a plated layer is formed on a ground layer; a main component of the ground layer is a metal or an alloy including at least one of Ni and Cu; and the ground layer includes Mo.
    Type: Application
    Filed: December 8, 2017
    Publication date: June 21, 2018
    Inventors: Atsuhiro YANAGISAWA, Yoshinori SHIBATA, Mikio TAHARA
  • Publication number: 20180151295
    Abstract: A multi-layer ceramic capacitor includes: a body including first and second end surfaces facing each other in a uniaxial direction, a first internal electrode drawn to the first end surface, a second internal electrode drawn to the second end surface, a capacitance forming unit including the first and second internal electrodes, and first and second end margins; a first external electrode; and a second external electrode, the multi-layer ceramic capacitor having a dimension of 0.4 mm or less in the uniaxial direction, the multi-layer ceramic capacitor satisfying the following condition: R??4.4*ln(S)+2.3, where R (%) represents a proportion of a total dimension of the first and second end margins in the uniaxial direction to a dimension of the body in the uniaxial direction, and S (mm2) represents an area of a cross section of the capacitance forming unit, the cross section being orthogonal to the uniaxial direction.
    Type: Application
    Filed: November 28, 2017
    Publication date: May 31, 2018
    Inventors: Daisuke Iwai, Shoji Kusumoto, Yoshinori Shibata, Michio Oshima, Atsuhiro Yanagisawa, Yasushi Inoue