Patents by Inventor Yasuyuki TAGAWA

Yasuyuki TAGAWA 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).

  • Method for producing conductive polymer-containing dispersion
    Patent number: 10563071
    Abstract: The present invention provides a method for producing a conductive polymer-containing dispersion, including: a polymerization step of polymerizing a monomer for obtaining a conjugated conductive polymer in a dispersion medium including the monomer and seed particles converted into a colloid protected by a polyanion.
    Type: Grant
    Filed: March 11, 2014
    Date of Patent: February 18, 2020
    Assignee: SHOWA DENKO K.K.
    Inventors: Yasuyuki Tagawa, Naoki Murata, Motoaki Araki, Takashi Ohkubo
  • Method for manufacturing solid electrolytic capacitor
    Patent number: 9640325
    Abstract: A method for manufacturing a solid electrolytic capacitor, which includes the steps of: in a dispersion medium containing a monomer for obtaining a conjugated conductive polymer and a seed particle with protective colloid formed of a polyanion, polymerizing the monomer to obtain a conjugated conductive polymer-containing dispersion liquid; attaching the conjugated conductive polymer-containing dispersion liquid to the surface of a porous anode body at least having an anode body made of a valve metal and a dielectric film formed on the surface of the anode body; and removing a part or all of the dispersion medium from the conjugated conductive polymer-containing dispersion liquid attached to the porous anode body to form a solid electrolyte layer. Also disclosed is a solid electrolytic capacitor obtained by the method.
    Type: Grant
    Filed: April 4, 2014
    Date of Patent: May 2, 2017
    Assignee: SHOWA DENKO K.K.
    Inventors: Yasuyuki Tagawa, Naoki Murata, Motoaki Araki, Takashi Ohkubo
  • METHOD FOR MANUFACTURING SOLID ELECTROLYTIC CAPACITOR
    Publication number: 20160055981
    Abstract: A method for manufacturing a solid electrolytic capacitor, which includes the steps of: in a dispersion medium containing a monomer for obtaining a conjugated conductive polymer and a seed particle with protective colloid formed of a polyanion, polymerizing the monomer to obtain a conjugated conductive polymer-containing dispersion liquid; attaching the conjugated conductive polymer-containing dispersion liquid to the surface of a porous anode body at least having an anode body made of a valve metal and a dielectric film formed on the surface of the anode body; and removing a part or all of the dispersion medium from the conjugated conductive polymer-containing dispersion liquid attached to the porous anode body to form a solid electrolyte layer. Also disclosed is a solid electrolytic capacitor obtained by the method.
    Type: Application
    Filed: April 4, 2014
    Publication date: February 25, 2016
    Applicant: SHOWA DENKO K.K.
    Inventors: Yasuyuki TAGAWA, Naoki MURATA, Motoaki ARAKI, Takashi OHKUBO
  • METHOD FOR PRODUCING CONDUCTIVE POLYMER-CONTAINING DISPERSION
    Publication number: 20160024315
    Abstract: The present invention provides a method for producing a conductive polymer-containing dispersion, including: a polymerization step of polymerizing a monomer for obtaining a conjugated conductive polymer in a dispersion medium including the monomer and seed particles converted into a protective colloid by a polyanion.
    Type: Application
    Filed: March 11, 2014
    Publication date: January 28, 2016
    Applicant: SHOWA DENKO K.K.
    Inventors: Yasuyuki TAGAWA, Naoki MURATA, Motoaki ARAKI, Takashi OHKUBO