Patents by Inventor Kota ZENZAI

Kota ZENZAI 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: 20170294268
    Abstract: In a multilayer ceramic capacitor, outer electrodes include base electrode layers including a conductive metal and a glass component on a ceramic multilayer body, conductive resin layers including a thermosetting resin and a metal component on the base electrode layers such that exposed portions of the base electrode layers are exposed at least at one corner on one end surface side of the ceramic multilayer body and at least at one corner on the other end surface side thereof, and plating layers on the conductive resin layers and the exposed portions of the base electrode layers. The exposed portions of the base electrode layers are in direct contact with the plating layers at least at one corner on the one end surface side of the ceramic multilayer body and at least at one corner on the other end surface side thereof.
    Type: Application
    Filed: April 11, 2017
    Publication date: October 12, 2017
    Inventors: Seiji KATSUTA, Yosuke TERASHITA, Takayoshi YAMAMOTO, Atsushi ISHIDA, Kota ZENZAI
  • Patent number: 9779876
    Abstract: A ceramic body is prepared that includes an inner electrode disposed inside the ceramic body and in which an end portion of the inner electrode is led to a surface of the ceramic body. An electrode layer is formed on the surface of the ceramic body so as to cover the end portion of the inner electrode, the electrode layer containing a resin, a first metal filler that contains a first metal component, and a second metal filler that contains a second metal component having a higher melting point than the first metal component. A heating step of heating the electrode layer is performed to form an electrode including a metal layer that is located on the surface of the ceramic body and that contains the first and second metal components and a metal contained in the inner electrode.
    Type: Grant
    Filed: October 26, 2015
    Date of Patent: October 3, 2017
    Assignee: Murata Manufactruing Co., Ltd.
    Inventors: Kota Zenzai, Hisayoshi Omori, Takashi Kanayama, Kiyoyasu Sakurada, Naoki Shimizu, Seiji Katsuta, Shinji Otani
  • Patent number: 9672963
    Abstract: A ceramic electronic component includes a rectangular or substantially rectangular parallelepiped shaped laminate in which a ceramic layer and an internal electrode are alternately laminated and an external electrode provided on a portion of a surface of the laminate and electrically connected to the internal electrode. The external electrode includes an inner external electrode covering a portion of the surface of the laminate and including a mixture of a resin component and a metal component and an outer external electrode covering the inner external electrode and including a metal component.
    Type: Grant
    Filed: June 16, 2014
    Date of Patent: June 6, 2017
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventors: Kenichi Hamanaka, Kota Zenzai, Taku Dekura, Kiyotaka Maegawa
  • Publication number: 20170140874
    Abstract: A ceramic electronic component includes a rectangular or substantially rectangular parallelepiped-shaped stack in which a ceramic layer and an internal electrode are alternately stacked and an external electrode provided on a portion of a surface of the stack and electrically connected to the internal electrode. The external electrode includes an inner external electrode covering a portion of the surface of the stack and including a mixture of a resin component and a metal component and an outer external electrode covering the inner external electrode and including a metal component. A volume occupied by the resin component in the inner external electrode is within a prescribed range.
    Type: Application
    Filed: January 30, 2017
    Publication date: May 18, 2017
    Inventors: Kenichi HAMANAKA, Kota ZENZAI, Taku DEKURA, Kiyotaka MAEGAWA
  • Publication number: 20170103853
    Abstract: An electronic component body includes an internal electrode that is partially extended to a surface of the electronic component body and is connected to an external electrode including a conductive material-containing resin layer including a conductive material and a resin layer and a plated layer covering the conductive material-containing resin layer. The conductive material-containing resin layer includes metal particles as the conductive material, and the plated layer extends from the surface of the conductive material-containing resin layer into the conductive material-containing resin layer such that the plated layer coats at least some of the metal particles.
    Type: Application
    Filed: October 5, 2016
    Publication date: April 13, 2017
    Inventor: Kota ZENZAI
  • Patent number: 9595375
    Abstract: A ceramic electronic component includes a rectangular or substantially rectangular parallelepiped-shaped stack in which a ceramic layer and an internal electrode are alternately stacked and an external electrode provided on a portion of a surface of the stack and electrically connected to the internal electrode. The external electrode includes an inner external electrode covering a portion of the surface of the stack and including a mixture of a resin component and a metal component and an outer external electrode covering the inner external electrode and including a metal component. A volume occupied by the resin component in the inner external electrode is within a prescribed range.
    Type: Grant
    Filed: June 16, 2014
    Date of Patent: March 14, 2017
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventors: Kenichi Hamanaka, Kota Zenzai, Taku Dekura, Kiyotaka Maegawa
  • Publication number: 20170053743
    Abstract: A multilayer ceramic electronic component includes a ceramic element body including internal electrodes and external electrodes electrically connected to respective internal electrodes. Each of the external electrodes includes a sintered metal layer including glass and metal and a conductive resin layer including resin and metal particles. In a cross section of the multilayer ceramic capacitor, at an interface between the sintered metal layer and the conductive resin layer, recesses having a shape in which a dimension of an inner portion is larger than a dimension of an inlet are present, and L1/L2 is about 0.2 or more and about 1.5 or less, where L1 is a length along the interface at which the glass of the sintered metal layer is exposed at the interface, and L2 is a length along the interface at which the metal of the sintered metal layer is exposed at the interface.
    Type: Application
    Filed: November 8, 2016
    Publication date: February 23, 2017
    Inventors: Jun IKEDA, Kota ZENZAI
  • Publication number: 20170011853
    Abstract: A ceramic electronic component includes a ceramic body, an inner electrode, an outer electrode, and a connecting portion. The inner electrode is disposed inside the ceramic body. The end portion of the inner electrode extends to a surface of the ceramic body. The outer electrode is disposed on the surface of the ceramic body so as to cover the end portion of the inner electrode. The outer electrode includes a resin and a metal. The connecting portion is disposed so as to extend from an inside of the outer electrode to an inside of the ceramic body. In a portion of the surface of the ceramic body on which the outer electrode is disposed, the length of the connecting portion that extends in a direction in which the inner electrode is extends about 2.4 ?m or more.
    Type: Application
    Filed: September 22, 2016
    Publication date: January 12, 2017
    Inventors: Kota ZENZAI, Hisayoshi OMORI, Takashi KANAYAMA, Kiyoyasu SAKURADA, Naoki SHIMIZU, Seiji KATSUTA, Shinji OTANI
  • Patent number: 9520236
    Abstract: A multilayer ceramic electronic component includes a ceramic element body including internal electrodes and external electrodes electrically connected to respective internal electrodes. Each of the external electrodes includes a sintered metal layer including glass and metal and a conductive resin layer including resin and metal particles. In a cross section of the multilayer ceramic capacitor, at an interface between the sintered metal layer and the conductive resin layer, recesses having a shape in which a dimension of an inner portion is larger than a dimension of an inlet are present, and L1/L2 is about 0.2 or more and about 1.5 or less, where L1 is a length along the interface at which the glass of the sintered metal layer is exposed at the interface, and L2 is a length along the interface at which the metal of the sintered metal layer is exposed at the interface.
    Type: Grant
    Filed: April 2, 2015
    Date of Patent: December 13, 2016
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Jun Ikeda, Kota Zenzai
  • Patent number: 9490055
    Abstract: A ceramic electronic component includes a ceramic body, an inner electrode, an outer electrode, and a connecting portion. The inner electrode is disposed inside the ceramic body. The end portion of the inner electrode extends to a surface of the ceramic body. The outer electrode is disposed on the surface of the ceramic body so as to cover the end portion of the inner electrode. The outer electrode includes a resin and a metal. The connecting portion is disposed so as to extend from an inside of the outer electrode to an inside of the ceramic body. In a portion of the surface of the ceramic body on which the outer electrode is disposed, the length of the connecting portion that extends in a direction in which the inner electrode is extends about 2.4 ?m or more.
    Type: Grant
    Filed: November 2, 2011
    Date of Patent: November 8, 2016
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Kota Zenzai, Hisayoshi Omori, Takashi Kanayama, Kiyoyasu Sakurada, Naoki Shimizu, Seiji Katsuta, Shinji Otani
  • Patent number: 9412503
    Abstract: In an electronic component, when L0 is a dimension of an electronic component body in a first direction, L1 is a distance between a first outer electrode and a second outer electrode on a first surface in the first direction, and L2 is a dimension of each of the first and second outer electrodes on the first surface in the first direction, 0%<L1/L0<10% and 30%<L2/L0 <50% are satisfied.
    Type: Grant
    Filed: February 6, 2014
    Date of Patent: August 9, 2016
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventors: Yutaka Ota, Masato Kimura, Kota Zenzai
  • Publication number: 20160172108
    Abstract: A multilayer ceramic electronic component includes a ceramic element body including internal electrodes and external electrodes electrically connected to respective internal electrodes. Each of the external electrodes includes a sintered metal layer including glass and metal and a conductive resin layer including resin and metal particles. In a cross section of the multilayer ceramic capacitor, at an interface between the sintered metal layer and the conductive resin layer, recesses having a shape in which a dimension of an inner portion is larger than a dimension of an inlet are present, and L1/L2 is about 0.2 or more and about 1.5 or less, where L1 is a length along the interface at which the glass of the sintered metal layer is exposed at the interface, and L2 is a length along the interface at which the metal of the sintered metal layer is exposed at the interface.
    Type: Application
    Filed: April 2, 2015
    Publication date: June 16, 2016
    Inventors: Jun IKEDA, Kota ZENZAI
  • Publication number: 20160141103
    Abstract: A multilayer ceramic capacitor includes a ceramic element body including internal electrodes therein. External electrodes are provided on end surfaces of the ceramic element body and electrically connected to exposed portions of respective ones of the internal electrodes. Each of the external electrodes includes a sintered metal layer, a conductive resin layer, and a plating layer.
    Type: Application
    Filed: March 26, 2015
    Publication date: May 19, 2016
    Inventors: Kenichi HAMANAKA, Hidetaka SUGIYAMA, Kota ZENZAI
  • Publication number: 20160042871
    Abstract: A ceramic body is prepared that includes an inner electrode disposed inside the ceramic body and in which an end portion of the inner electrode is led to a surface of the ceramic body. An electrode layer is formed on the surface of the ceramic body so as to cover the end portion of the inner electrode, the electrode layer containing a resin, a first metal filler that contains a first metal component, and a second metal filler that contains a second metal component having a higher melting point than the first metal component. A heating step of heating the electrode layer is performed to form an electrode including a metal layer that is located on the surface of the ceramic body and that contains the first and second metal components and a metal contained in the inner electrode.
    Type: Application
    Filed: October 26, 2015
    Publication date: February 11, 2016
    Inventors: Kota ZENZAI, Hisayoshi OMORI, Takashi KANAYAMA, Kiyoyasu SAKURADA, Naoki SHIMIZU, Seiji KATSUTA, Shinji OTANI
  • Publication number: 20150364256
    Abstract: A conductive resin paste that includes a conductive component and a resin component, where the conductive component includes at least Ag and Cu, and the proportion of the Ag to the total amount of the Ag and Cu included in the conductive component falls within the range of 11.6 mass % to 28.8 mass %. As the conductive component, an Ag-coated Cu powder is used which has a Cu powder with a surface at least partially coated with Ag.
    Type: Application
    Filed: June 10, 2015
    Publication date: December 17, 2015
    Inventors: Kota Zenzai, Yosuke Terashita
  • Patent number: 9202640
    Abstract: A ceramic body includes an inner electrode disposed inside the ceramic body and in which an end portion of the inner electrode extends to a surface of the ceramic body. An electrode layer is formed on the surface of the ceramic body so as to cover the end portion of the inner electrode, the electrode layer including a resin, a first metal filler that contains a first metal component, and a second metal filler that contains a second metal component having a higher melting point than the first metal component. A step of heating the electrode layer is performed to form an electrode including a metal layer that is located on the surface of the ceramic body and that includes the first and second metal components and a metal contained in the inner electrode.
    Type: Grant
    Filed: November 2, 2011
    Date of Patent: December 1, 2015
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventors: Kota Zenzai, Hisayoshi Omori, Takashi Kanayama, Kiyoyasu Sakurada, Naoki Shimizu, Seiji Katsuta, Shinji Otani
  • Patent number: 8988854
    Abstract: A multilayer ceramic capacitor includes a ceramic element body including internal electrodes therein. External electrodes are provided on end surfaces of the ceramic element body and electrically connected to exposed portions of respective ones of the internal electrodes. Each of the external electrodes includes a sintered metal layer, a conductive resin layer, and a plating layer. In a cross section of the multilayer ceramic capacitor, at an interface between the sintered metal layer and the conductive resin layer, recesses having a shape in which a dimension of an inner portion is larger than a dimension of an inlet are present, and a number of recesses in which a material of the conductive resin layer is present is 2 or more within a length range of about 70 ?m along the interface.
    Type: Grant
    Filed: November 14, 2014
    Date of Patent: March 24, 2015
    Assignee: Murata Manufacturing Co., Ltd.
    Inventor: Kota Zenzai
  • Patent number: 8988855
    Abstract: A ceramic electronic component includes a ceramic body and an outer electrode. The outer electrode is disposed on the ceramic body. The outer electrode includes a first conductive layer and a second conductive layer. The first conductive layer includes a resin, a first metal component, and a second metal component having a higher melting point than the first metal component. The second conductive layer is disposed on the first conductive layer. The second conductive layer is includes a plating film. An alloy particle containing the first metal component and the second metal component protrudes to the second conductive layer side from a surface of the first conductive layer.
    Type: Grant
    Filed: November 2, 2011
    Date of Patent: March 24, 2015
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Kiyoyasu Sakurada, Kota Zenzai, Hisayoshi Omori, Takashi Kanayama, Shinji Otani, Naoki Shimizu, Seiji Katsuta
  • Publication number: 20140373324
    Abstract: A ceramic electronic component includes a rectangular or substantially rectangular parallelepiped-shaped stack in which a ceramic layer and an internal electrode are alternately stacked and an external electrode provided on a portion of a surface of the stack and electrically connected to the internal electrode. The external electrode includes an inner external electrode covering a portion of the surface of the stack and including a mixture of a resin component and a metal component and an outer external electrode covering the inner external electrode and including a metal component. The inner external electrode includes a plurality of holes. An average opening diameter of the plurality of holes is not greater than about 2.5 ?m. Some or all of the plurality of holes are embedded with the metal component of the outer external electrode.
    Type: Application
    Filed: June 16, 2014
    Publication date: December 25, 2014
    Inventors: Kenichi HAMANAKA, Kota ZENZAI, Taku DEKURA, Kiyotaka MAEKAWA
  • Publication number: 20140375173
    Abstract: A ceramic electronic component includes a rectangular or substantially rectangular parallelepiped shaped laminate in which a ceramic layer and an internal electrode are alternately laminated and an external electrode provided on a portion of a surface of the laminate and electrically connected to the internal electrode. The external electrode includes an inner external electrode covering a portion of the surface of the laminate and including a mixture of a resin component and a metal component and an outer external electrode covering the inner external electrode and including a metal component.
    Type: Application
    Filed: June 16, 2014
    Publication date: December 25, 2014
    Inventors: Kenichi HAMANAKA, Kota ZENZAI, Taku DEKURA, Kiyotaka MAEKAWA