Patents by Inventor Takeshi NOSAKI

Takeshi NOSAKI 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: 11367575
    Abstract: A multi-layer ceramic capacitor includes: a ceramic body including ceramic layers laminated along one axial direction, first and second internal electrodes alternately disposed between the ceramic layers, first and second end surfaces to which the first and second internal electrodes are respectively drawn, a first end margin that forms an interval between the first end surface and the second internal electrodes, and a second end margin that forms an interval between the second end surface and the first internal electrodes; and first and second external electrodes that respectively cover the first and second end surfaces and are respectively connected to the first and second internal electrodes, the multi-layer ceramic capacitor satisfying the following relationship: SE?S/400+300, where S (?m) represents an area of the ceramic body and SE (?m) represents a total area of the first and second internal electrodes in cross sections of the first and second end margins.
    Type: Grant
    Filed: December 9, 2020
    Date of Patent: June 21, 2022
    Assignee: Taiyo Yuden Co., Ltd.
    Inventors: Jyouji Ariga, Katsuo Sakatsume, Masumi Ishii, Takeshi Nosaki, Norihiro Arai, Yasushi Inoue
  • Patent number: 11227718
    Abstract: A method of manufacturing a multilayer ceramic capacitor includes: forming a multilayer body by alternately stacking a green sheet and a conductive paste for forming an internal electrode layer, the green sheet being mainly composed of a ceramic material having a perovskite structure that includes Ca and Zr and is expressed by a general expression ABO3 and containing an alkali metal, the conductive paste being mainly composed of Cu, containing a ceramic co-material and no alkali metal; and baking the multilayer body to obtain a ceramic multilayer body.
    Type: Grant
    Filed: February 27, 2019
    Date of Patent: January 18, 2022
    Assignee: TAIYO YUDEN CO., LTD.
    Inventors: Jyouji Ariga, Takeshi Nosaki, Masumi Ishii, Norihiro Arai, Hiroyuki Moteki, Manabu Ozawa
  • 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: 10984956
    Abstract: A ceramic electronic device includes: a multilayer chip having a first and a second internal electrode layers; a first and a second external electrodes covering a first a second regions of a surface of the multilayer chip, wherein: a mark is shifted on a side of one of two end faces on an upper face; the first internal electrode layer is exposed to the first region and connected to the first external electrode; the second internal electrode layer is exposed to the second region and connected to the second external electrode; the second internal electrode is shifted further on a side of the lower face than on a side of the upper face; the second internal electrode layer is shifted further on a side of the lower face than the upper face; the second region is a region of a half of the surface on the lower face side.
    Type: Grant
    Filed: September 4, 2019
    Date of Patent: April 20, 2021
    Assignee: TAIYO YUDEN CO., LTD.
    Inventors: Norihiro Arai, Takeshi Nosaki, Jyouji Ariga, Kazuya Maekawa, Manabu Ozawa, Hiroyuki Moteki
  • Publication number: 20210090813
    Abstract: A multi-layer ceramic capacitor includes: a ceramic body including ceramic layers laminated along one axial direction, first and second internal electrodes alternately disposed between the ceramic layers, first and second end surfaces to which the first and second internal electrodes are respectively drawn, a first end margin that forms an interval between the first end surface and the second internal electrodes, and a second end margin that forms an interval between the second end surface and the first internal electrodes; and first and second external electrodes that respectively cover the first and second end surfaces and are respectively connected to the first and second internal electrodes, the multi-layer ceramic capacitor satisfying the following relationship: SE?S/400+300, where S (?m) represents an area of the ceramic body and SE (?m) represents a total area of the first and second internal electrodes in cross sections of the first and second end margins.
    Type: Application
    Filed: December 9, 2020
    Publication date: March 25, 2021
    Inventors: Jyouji ARIGA, Katsuo SAKATSUME, Masumi ISHII, Takeshi NOSAKI, Norihiro ARAI, Yasushi INOUE
  • Patent number: 10930436
    Abstract: A multilayer ceramic capacitor includes: a ceramic multilayer structure designated to have ceramic dielectric layers and internal electrode layers alternately stacked, the internal electrode layers being mainly composed of a transition metal other than an iron group, end edges of the internal electrode layers being alternately exposed to a first end face and a second end face; and a pair of external electrodes provided on the first end face and the second end face, wherein: the external electrodes have a base conductive layer and a first plated layer; the base conductive layer directly contacts the ceramic multilayer structure; a main component of the base conductive layer is a noble metal or a transition metal other than an iron group; and a total concentration of Si and B in a second-phase not contacting the ceramic multilayer structure is 0.3 wt % or less, in the base conductive layer.
    Type: Grant
    Filed: November 1, 2018
    Date of Patent: February 23, 2021
    Assignee: TAIYO YUDEN CO., LTD.
    Inventors: Norihiro Arai, Takeshi Nosaki, Masumi Ishii, Jyouji Ariga, Hiroyuki Moteki, Manabu Ozawa
  • Patent number: 10892102
    Abstract: A multi-layer ceramic capacitor includes: a ceramic body including ceramic layers laminated along one axial direction, first and second internal electrodes alternately disposed between the ceramic layers, first and second end surfaces to which the first and second internal electrodes are respectively drawn, a first end margin that forms an interval between the first end surface and the second internal electrodes, and a second end margin that forms an interval between the second end surface and the first internal electrodes; and first and second external electrodes that respectively cover the first and second end surfaces and are respectively connected to the first and second internal electrodes, the multi-layer ceramic capacitor satisfying the following relationship: SE?S/400+300, where S (?m) represents an area of the ceramic body and SE (?m) represents a total area of the first and second internal electrodes in cross sections of the first and second end margins.
    Type: Grant
    Filed: November 30, 2018
    Date of Patent: January 12, 2021
    Assignee: Taiyo Yuden Co., Ltd.
    Inventors: Jyouji Ariga, Katsuo Sakatsume, Masumi Ishii, Takeshi Nosaki, Norihiro Arai, Yasushi Inoue
  • Patent number: 10593475
    Abstract: A multi-layer ceramic capacitor includes: a ceramic body that includes a plurality of ceramic layers laminated in one axial direction and includes polycrystal having a Perovskite structure as a main phase, the Perovskite structure containing calcium and zirconium and being expressed by a general expression ABO3, the polycrystal containing silicon, boron, and lithium; first and second internal electrodes alternately disposed between the ceramic layers; a first external electrode provided on an outer surface of the ceramic body and connected to the first internal electrodes; and a second external electrode provided on the outer surface of the ceramic body and connected to the second internal electrodes, the multi-layer ceramic capacitor satisfying 0.2858V+0.4371?CLi?0.1306V+3.0391, where V (mm3) represents a volume of the ceramic body, and CLi (atm %) represents a concentration of the lithium when a concentration of a B-site element of the main phase of the polycrystal is 100 atm %.
    Type: Grant
    Filed: September 10, 2018
    Date of Patent: March 17, 2020
    Assignee: TAIYO YUDEN CO., LTD.
    Inventors: Norihiro Arai, Katsuo Sakatsume, Takeshi Nosaki, Masumi Ishii, Joji Ariga
  • Publication number: 20200082988
    Abstract: A ceramic electronic device includes: a multilayer chip having a first and a second internal electrode layers; a first and a second external electrodes covering a first a second regions of a surface of the multilayer chip, wherein: a mark is shifted on a side of one of two end faces on an upper face; the first internal electrode layer is exposed to the first region and connected to the first external electrode; the second internal electrode layer is exposed to the second region and connected to the second external electrode; the second internal electrode is shifted further on a side of the lower face than on a side of the upper face; the second internal electrode layer is shifted further on a side of the lower face than the upper face; the second region is a region of a half of the surface on the lower face side.
    Type: Application
    Filed: September 4, 2019
    Publication date: March 12, 2020
    Inventors: Norihiro ARAI, Takeshi NOSAKI, Jyouji ARIGA, Kazuya MAEKAWA, Manabu OZAWA, Hiroyuki MOTEKI
  • Patent number: 10522291
    Abstract: A multilayer ceramic capacitor includes: a ceramic multilayer structure having ceramic dielectric layers and internal electrode layers alternately stacked, the internal electrode layers being mainly composed of a transition metal other than an iron group, end edges of the internal electrode layers being alternately exposed to a first end face and a second end face; and a pair of external electrodes provided on the first end face and the second end face, wherein the external electrode includes a base conductive layer that includes glass of less than 7 weight % and is mainly composed of a transition metal other than an iron group or a noble metal, and a first plated film that covers the base conductive layer, has a thickness that is half of a thickness of the base conductive layer or more and is mainly composed of a transition metal other than an iron group.
    Type: Grant
    Filed: March 13, 2017
    Date of Patent: December 31, 2019
    Assignee: TAIYO YUDEN CO., LTD.
    Inventors: Katsuo Sakatsume, Masumi Ishii, Takeshi Nosaki, Norihiro Arai, Jyouji Ariga, Yasushi Inoue
  • 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: 20190272954
    Abstract: A method of manufacturing a multilayer ceramic capacitor includes: forming a multilayer body by alternately stacking a green sheet and a conductive paste for forming an internal electrode layer, the green sheet being mainly composed of a ceramic material having a perovskite structure that includes Ca and Zr and is expressed by a general expression ABO3 and containing an alkali metal, the conductive paste being mainly composed of Cu, containing a ceramic co-material and no alkali metal; and baking the multilayer body to obtain a ceramic multilayer body.
    Type: Application
    Filed: February 27, 2019
    Publication date: September 5, 2019
    Inventors: Jyouji ARIGA, Takeshi NOSAKI, Masumi ISHII, Norihiro ARAI, Hiroyuki MOTEKI, Manabu OZAWA
  • Patent number: 10381160
    Abstract: A multi-layer ceramic electronic component includes a multi-layer unit and an external electrode. The multi-layer unit includes an end surface oriented in a first direction, a side surface oriented in a second direction orthogonal to the first direction, a ridge connecting the end surface and the side surface, ceramic layers, and internal electrodes. The multi-layer ceramic electronic component satisfies the following relationships: A/L?0.0142*ln(L)+0.0256, A/T?0.0274*ln(T)+0.0719, B/L?0.0103*ln(L)+0.0281, and B/T?0.0189*ln(T)+0.0707, where A represents a thickness of the external electrode in the second direction at a position adjacent to the ridge on the side surface, B represents a thickness of the external electrode in the first direction at a position adjacent to the ridge on the end surface, L represents a dimension of the multi-layer ceramic electronic component in the first direction, and T represents a dimension of the multi-layer ceramic electronic component in the second direction.
    Type: Grant
    Filed: August 15, 2017
    Date of Patent: August 13, 2019
    Assignee: TAIYO YUDEN CO., LTD.
    Inventors: Katsuo Sakatsume, Masumi Ishii, Takeshi Nosaki, Norihiro Arai, Jyouji Ariga, Yasushi Inoue
  • Publication number: 20190180940
    Abstract: A multi-layer ceramic capacitor includes: a ceramic body including ceramic layers laminated along one axial direction, first and second internal electrodes alternately disposed between the ceramic layers, first and second end surfaces to which the first and second internal electrodes are respectively drawn, a first end margin that forms an interval between the first end surface and the second internal electrodes, and a second end margin that forms an interval between the second end surface and the first internal electrodes; and first and second external electrodes that respectively cover the first and second end surfaces and are respectively connected to the first and second internal electrodes, the multi-layer ceramic capacitor satisfying the following relationship: SE?S/400+300, where S (?m) represents an area of the ceramic body and SE (?m) represents a total area of the first and second internal electrodes in cross sections of the first and second end margins.
    Type: Application
    Filed: November 30, 2018
    Publication date: June 13, 2019
    Inventors: JYOUJI ARIGA, KATSUO SAKATSUME, MASUMI ISHII, TAKESHI NOSAKI, NORIHIRO ARAI, YASUSHI INOUE
  • Publication number: 20190139704
    Abstract: A multilayer ceramic capacitor includes: a ceramic multilayer structure designated to have ceramic dielectric layers and internal electrode layers alternately stacked, the internal electrode layers being mainly composed of a transition metal other than an iron group, end edges of the internal electrode layers being alternately exposed to a first end face and a second end face; and a pair of external electrodes provided on the first end face and the second end face, wherein: the external electrodes have a base conductive layer and a first plated layer; the base conductive layer directly contacts the ceramic multilayer structure; a main component of the base conductive layer is a noble metal or a transition metal other than an iron group; and a total concentration of Si and B in a second-phase not contacting the ceramic multilayer structure is 0.3 wt % or less, in the base conductive layer.
    Type: Application
    Filed: November 1, 2018
    Publication date: May 9, 2019
    Inventors: Norihiro ARAI, Takeshi NOSAKI, Masumi ISHII, Jyouji ARIGA, Hiroyuki MOTEKI, Manabu OZAWA
  • Publication number: 20190096578
    Abstract: A multi-layer ceramic capacitor includes: a ceramic body that includes a plurality of ceramic layers laminated in one axial direction and includes polycrystal having a Perovskite structure as a main phase, the Perovskite structure containing calcium and zirconium and being expressed by a general expression ABO3, the polycrystal containing silicon, boron, and lithium; first and second internal electrodes alternately disposed between the ceramic layers; a first external electrode provided on an outer surface of the ceramic body and connected to the first internal electrodes; and a second external electrode provided on the outer surface of the ceramic body and connected to the second internal electrodes, the multi-layer ceramic capacitor satisfying 0.2858V+0.4371?CLi?0.1306V+3.0391, where V (mm3) represents a volume of the ceramic body, and CLi (atm %) represents a concentration of the lithium when a concentration of a B-site element of the main phase of the polycrystal is 100 atm %.
    Type: Application
    Filed: September 10, 2018
    Publication date: March 28, 2019
    Inventors: NORIHIRO ARAI, KATSUO SAKATSUME, TAKESHI NOSAKI, MASUMI ISHII, JOJI ARIGA
  • Publication number: 20180053601
    Abstract: A multi-layer ceramic electronic component includes a multi-layer unit and an external electrode. The multi-layer unit includes an end surface oriented in a first direction, a side surface oriented in a second direction orthogonal to the first direction, a ridge connecting the end surface and the side surface, ceramic layers, and internal electrodes. The multi-layer ceramic electronic component satisfies the following relationships: A/L?0.0142*ln(L)+0.0256, A/T?0.0274*ln(T)+0.0719, B/L?0.0103*ln(L)+0.0281, and B/T?0.0189*ln(T)+0.0707, where A represents a thickness of the external electrode in the second direction at a position adjacent to the ridge on the side surface, B represents a thickness of the external electrode in the first direction at a position adjacent to the ridge on the end surface, L represents a dimension of the multi-layer ceramic electronic component in the first direction, and T represents a dimension of the multi-layer ceramic electronic component in the second direction.
    Type: Application
    Filed: August 15, 2017
    Publication date: February 22, 2018
    Inventors: Katsuo Sakatsume, Masumi Ishii, Takeshi Nosaki, Norihiro Arai, Jyouji Ariga, Yasushi Inoue
  • Publication number: 20170345570
    Abstract: A multilayer ceramic capacitor includes: a ceramic multilayer structure having ceramic dielectric layers and internal electrode layers alternately stacked, the internal electrode layers being mainly composed of a transition metal other than an iron group, end edges of the internal electrode layers being alternately exposed to a first end face and a second end face; and a pair of external electrodes provided on the first end face and the second end face, wherein the external electrode includes a base conductive layer that includes glass of less than 7 weight % and is mainly composed of a transition metal other than an iron group or a noble metal, and a first plated film that covers the base conductive layer, has a thickness that is half of a thickness of the base conductive layer or more and is mainly composed of a transition metal other than an iron group.
    Type: Application
    Filed: March 13, 2017
    Publication date: November 30, 2017
    Inventors: Katsuo SAKATSUME, Masumi ISHII, Takeshi NOSAKI, Norihiro ARAI, Jyouji ARIGA, Yasushi INOUE
  • Publication number: 20170345568
    Abstract: A multilayer ceramic capacitor includes: a ceramic multilayer structure having ceramic dielectric layers and internal electrode layers alternately stacked, the internal electrode layers being mainly composed of a transition metal other than an iron group, end edges of the internal electrode layers being alternately exposed to a first end face and a second end face; and at least a pair of external electrodes that are provided on the first face and the second face of the ceramic multilayer structure, wherein the external electrode includes a base conductive layer including ceramic of 5 weight % or less and being mainly composed of a transition metal other than an iron group or a noble metal and a first plated film having a thickness that is half of a thickness of the base conductive layer or more and being mainly composed of a transition metal other than an iron group.
    Type: Application
    Filed: March 13, 2017
    Publication date: November 30, 2017
    Inventors: Katsuo SAKATSUME, Masumi ISHII, Takeshi NOSAKI, Norihiro ARAI, Jyouji ARIGA, Yasushi INOUE
  • Publication number: 20170345569
    Abstract: A multilayer ceramic capacitor includes: a ceramic multilayer structure in which a ceramic dielectric layer and an internal electrode layer mainly composed of transition metal other than iron-group transition metal are alternately stacked, and a plurality of the internal electrode layers stacked are alternately exposed to a pair of end surfaces of the ceramic multilayer structure; a pair of external electrodes that are coupled to the internal electrode layer in the pair of end surfaces and are mainly composed of transition metal other than iron-group transition metal; and a conductor that is fixed to the ceramic multilayer structure, is located in a region other than a region in which the plurality of the internal electrode layers face each other, and is mainly composed of iron-group transition metal.
    Type: Application
    Filed: March 13, 2017
    Publication date: November 30, 2017
    Inventors: Katsuo SAKATSUME, Masumi ISHII, Takeshi NOSAKI, Norihiro ARAI, Jyouji ARIGA