Patents by Inventor Hiroyuki Demizu

Hiroyuki Demizu 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: 10903017
    Abstract: A solid electrolytic capacitor that includes a plurality of capacitor elements each including an anode portion, a dielectric layer, and a cathode portion having a solid electrolyte layer and a current collector layer; a leading conductor layer; an insulating resin body; a first external electrode; and a second external electrode. The plurality of capacitor elements are stacked in layers, with mutually adjacent capacitor elements having their respective current collector layers connected to each other. The current collector layer of only the capacitor element adjacent to the leading conductor layer is connected to the leading conductor layer. The first external electrode is connected to the leading conductor layer at the first end surface.
    Type: Grant
    Filed: June 14, 2017
    Date of Patent: January 26, 2021
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventors: Hiroyuki Demizu, Kenichi Oshiumi, Tomohiro Suzuki, Shinya Yoshida, Tadahisa Sano, Koji Fujimoto, Tsuyoshi Yamamoto, Yoshinori Ueda, Shinji Otani
  • Patent number: 10418184
    Abstract: The solid electrolytic capacitor according to the present invention is a solid electrolytic capacitor including a valve metal, an oxide film layer formed on a surface of the valve metal, and a solid electrolyte layer formed on the oxide film layer, wherein the solid electrolyte layer contains a conductive polymer and a gel of an organic solvent solidified with a chemical gelling agent.
    Type: Grant
    Filed: March 30, 2016
    Date of Patent: September 17, 2019
    Assignee: Tokin Corporation
    Inventors: Yasuhisa Sugawara, Yuji Murayama, Hiroyuki Demizu, Hiroki Satoh
  • Patent number: 10340092
    Abstract: A solid electrolytic capacitor that includes a capacitor element including an anode portion having a metal layer, a dielectric layer, and a cathode portion having a solid electrolyte layer and a current collector layer; a leading conductor layer; an insulating resin body covering the capacitor element and the leading conductor layer, the insulating resin body having a first end surface and a second end surface opposite to each other; a first external electrode; and a second external electrode. The first external electrode has at least one plating layer on the first end surface, and is connected to the leading conductor layer at the first end surface. The second external electrode has at least one plating layer on the second end surface, and is connected to the metal layer at the second end surface.
    Type: Grant
    Filed: June 14, 2017
    Date of Patent: July 2, 2019
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventors: Hiroyuki Demizu, Kenichi Oshiumi, Tomohiro Suzuki, Shinya Yoshida, Koji Fujimoto, Tadahisa Sano, Tsuyoshi Yamamoto, Yoshinori Ueda, Shinji Otani
  • Publication number: 20170365419
    Abstract: A solid electrolytic capacitor that includes a plurality of capacitor elements each including an anode portion, a dielectric layer, and a cathode portion having a solid electrolyte layer and a current collector layer; a leading conductor layer; an insulating resin body; a first external electrode; and a second external electrode. The plurality of capacitor elements are stacked in layers, with mutually adjacent capacitor elements having their respective current collector layers connected to each other. The current collector layer of only the capacitor element adjacent to the leading conductor layer is connected to the leading conductor layer. The first external electrode is connected to the leading conductor layer at the first end surface.
    Type: Application
    Filed: June 14, 2017
    Publication date: December 21, 2017
    Inventors: Hiroyuki Demizu, Kenichi Oshiumi, Tomohiro Suzuki, Shinya Yoshida, Tadahisa Sano, Koji Fujimoto, Tsuyoshi Yamamoto, Yoshinori Ueda, Shinji Otani
  • Publication number: 20170365415
    Abstract: A solid electrolytic capacitor that includes a capacitor element including an anode portion having a metal layer, a dielectric layer, and a cathode portion having a solid electrolyte layer and a current collector layer; a leading conductor layer; an insulating resin body covering the capacitor element and the leading conductor layer, the insulating resin body having a first end surface and a second end surface opposite to each other; a first external electrode; and a second external electrode. The first external electrode has at least one plating layer on the first end surface, and is connected to the leading conductor layer at the first end surface. The second external electrode has at least one plating layer on the second end surface, and is connected to the metal layer at the second end surface.
    Type: Application
    Filed: June 14, 2017
    Publication date: December 21, 2017
    Inventors: HIROYUKI DEMIZU, Kenichi Oshiumi, Tomohiro Suzuki, Shinya Yoshida, Koji Fujimoto, Tadahisa Sano, Tsuyoshi Yamamoto, Yoshinori Ueda, Shinji Otani
  • Publication number: 20160293337
    Abstract: The solid electrolytic capacitor according to the present invention is a solid electrolytic capacitor including a valve metal, an oxide film layer formed on a surface of the valve metal, and a solid electrolyte layer formed on the oxide film layer, wherein the solid electrolyte layer contains a conductive polymer and a gel of an organic solvent solidified with a chemical gelling agent.
    Type: Application
    Filed: March 30, 2016
    Publication date: October 6, 2016
    Inventors: Yasuhisa Sugawara, Yuji Murayama, Hiroyuki Demizu, Hiroki Satoh
  • Patent number: 9076590
    Abstract: The present invention provides an electroconductive polymer suspension solution and an electroconductive polymer material which has a high electroconductivity and in which the time-related deterioration of the electroconductivity is suppressed. Also, the present invention provides an electrolytic capacitor with a low ESR using the electroconductive polymer material as a solid electrolyte and a method for producing the same. In the present invention, electroconductive polymer particles 1 in the electroconductive polymer material are bonded via organic dispersant 2 and cross-linker 3 to obtain a strong bond between electroconductive polymer particles 1.
    Type: Grant
    Filed: February 22, 2013
    Date of Patent: July 7, 2015
    Assignee: NEC Tokin Corporation
    Inventors: Yasuhisa Sugawara, Tomoki Nobuta, Satoshi Suzuki, Yasuhiro Tomioka, Hiroyuki Demizu, Hiroki Satoh
  • Publication number: 20140185192
    Abstract: Provided is a solid electrolytic capacitor having a low initial ESR in which the ESR increase with time can be suppressed. It is a solid electrolytic capacitor, including an electroconductive polymer layer, a graphite layer on the electroconductive polymer layer, and a silver layer on the graphite layer, wherein the electroconductive polymer layer and the graphite layer, and/or, the graphite layer and the silver layer are bonded by a chemical bond.
    Type: Application
    Filed: December 17, 2013
    Publication date: July 3, 2014
    Applicant: NEC TOKIN Corporation
    Inventors: Yasuhisa SUGAWARA, Koji Sakata, Yasuhiro Tomioka, Hiroyuki Demizu, Hiroki Satoh
  • Publication number: 20140168858
    Abstract: Provided is an electroconductive polymer solution containing an electroconductive polymer having high chemical resistance and a high electroconductivity. It is an electroconductive polymer solution, containing an electroconductive polymer having thiophene, aniline, pyrrole, or a derivative thereof as a repeating unit, wherein a dopant or a salt thereof having an amide bond and an anion group is doped into the electroconductive polymer.
    Type: Application
    Filed: December 16, 2013
    Publication date: June 19, 2014
    Applicant: NEC TOKIN Corporation
    Inventors: Hiroki SATOH, Yasuhisa Sugawara, Hiroyuki Demizu, Yasuhiro Tomioka, Koji Sakata
  • Patent number: 7980607
    Abstract: An impact absorbing member comprises a first main body and a second main body. The first main body comprises a first partial tube wall and first flange members. The second main body comprises a second partial tube wall and second flange members. The first flange members are joined with the respective second flange members in a discontinuous manner along the axial direction of the tube. In at least one segment where the first flange members and the second flange members are not joined in the axial direction of the tube, spaces are formed between ends part of a first partial tube wall side of the first flange members and end parts of a second partial tube wall side of the second flange members.
    Type: Grant
    Filed: July 23, 2008
    Date of Patent: July 19, 2011
    Assignees: Toyotomi Kiko Co., Ltd., Aisin Seiki Kabushiki Kaisha
    Inventors: Takakuni Kanaya, Hiroyuki Demizu, Kohei Hodoya
  • Publication number: 20110012389
    Abstract: An impact absorbing member comprises a first main body and a second main body. The first main body comprises a first partial tube wall and first flange members. The second main body comprises a second partial tube wall and second flange members. The first flange members are joined with the respective second flange members in a discontinuous manner along the axial direction of the tube. In at least one segment where the first flange members and the second flange members are not joined in the axial direction of the tube, spaces are formed between ends part of a first partial tube wall side of the first flange members and end parts of a second partial tube wall side of the second flange members.
    Type: Application
    Filed: July 23, 2008
    Publication date: January 20, 2011
    Applicants: TOYOTOMI KIKO CO., LTD., AISIN SEIKI KABUSHIKI KAISHA
    Inventors: Takakuni Kanaya, Hiroyuki Demizu, Kohei Hodoya