Patents by Inventor Haruna UBUKATA

Haruna UBUKATA 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: 11784008
    Abstract: A ceramic electronic device includes, a multilayer chip in which each of a plurality of dielectric layers and each of a plurality of internal electrode layers are alternately stacked, external electrodes provided on the first end face and the second end face, and a water repellent agent formed on a surface of the external electrodes. A thickness A (>0) of the water repellent agent on at least one of four faces of the external electrodes that cover an upper face in a stacking direction, a lower face in the stacking direction, and two side faces of the multilayer chip is larger than a thickness B (>0) of the water repellent agent on faces of the external electrodes that cover the first end face and the second end face.
    Type: Grant
    Filed: November 8, 2022
    Date of Patent: October 10, 2023
    Assignee: TAIYO YUDEN CO., LTD.
    Inventors: Kiyoshiro Yatagawa, Haruna Ubukata
  • Publication number: 20230085334
    Abstract: A ceramic electronic device includes, a multilayer chip in which each of a plurality of dielectric layers and each of a plurality of internal electrode layers are alternately stacked, external electrodes provided on the first end face and the second end face, and a water repellent agent formed on a surface of the external electrodes. A thickness A (>0) of the water repellent agent on at least one of four faces of the external electrodes that cover an upper face in a stacking direction, a lower face in the stacking direction, and two side faces of the multilayer chip is larger than a thickness B (>0) of the water repellent agent on faces of the external electrodes that cover the first end face and the second end face.
    Type: Application
    Filed: November 8, 2022
    Publication date: March 16, 2023
    Applicant: TAIYO YUDEN CO., LTD.
    Inventors: Kiyoshiro YATAGAWA, Haruna UBUKATA
  • Patent number: 11605506
    Abstract: A ceramic electronic device includes, a multilayer chip in which each of a plurality of dielectric layers and each of a plurality of internal electrode layers are alternately stacked, external electrodes provided on the first end face and the second end face, and a water repellent agent formed on a surface of the external electrodes. A thickness A (>0) of the water repellent agent on at least one of four faces of the external electrodes that cover an upper face in a stacking direction, a lower face in the stacking direction, and two side faces of the multilayer chip is larger than a thickness B (>0) of the water repellent agent on faces of the external electrodes that cover the first end face and the second end face.
    Type: Grant
    Filed: November 6, 2020
    Date of Patent: March 14, 2023
    Assignee: TAIYO YUDEN CO., LTD.
    Inventors: Kiyoshiro Yatagawa, Haruna Ubukata
  • 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
  • Publication number: 20210151256
    Abstract: A ceramic electronic device includes, a multilayer chip in which each of a plurality of dielectric layers and each of a plurality of internal electrode layers are alternately stacked, external electrodes provided on the first end face and the second end face, and a water repellent agent formed on a surface of the external electrodes. A thickness A (>0) of the water repellent agent on at least one of four faces of the external electrodes that cover an upper face in a stacking direction, a lower face in the stacking direction, and two side faces of the multilayer chip is larger than a thickness B (>0) of the water repellent agent on faces of the external electrodes that cover the first end face and the second end face.
    Type: Application
    Filed: November 6, 2020
    Publication date: May 20, 2021
    Applicant: TAIYO YUDEN CO., LTD.
    Inventors: Kiyoshiro YATAGAWA, Haruna UBUKATA
  • 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