Patents by Inventor Miyo FUJITA

Miyo FUJITA 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).

  • Process for producing dispersion containing electroconductive polymer
    Patent number: 10563020
    Abstract: A method for producing a conductive polymer-containing dispersion, the method including a polymerization step of subjecting a monomer that is to be a constitutional unit of a conjugated conductive polymer to a polymerization reaction in a mixed solution containing the monomer, a polyanion, and a dispersion medium to produce a polymerized product; and a dispersion treatment step of performing a dispersion treatment on a reaction solution obtained in the polymerization step to prepare a dispersion of the polymerized product, wherein a dispersion medium is added one or more times at any point in time from after the polymerization step to during the dispersion treatment step to make a mass concentration (B) of the polymerized product in the dispersion after the dispersion treatment step lower than a mass concentration (A) of the polymerized product in the reaction solution.
    Type: Grant
    Filed: December 1, 2016
    Date of Patent: February 18, 2020
    Assignee: SHOWA DENKO K.K.
    Inventors: Miyo Fujita, Motoaki Araki, Takashi Ohkubo
  • PROCESS FOR PRODUCING DISPERSION CONTAINING ELECTROCONDUCTIVE POLYMER
    Publication number: 20180371177
    Abstract: A method for producing a conductive polymer-containing dispersion, the method including a polymerization step of subjecting a monomer that is to be a constitutional unit of a conjugated conductive polymer to a polymerization reaction in a mixed solution containing the monomer, a polyanion, and a dispersion medium to produce a polymerized product; and a dispersion treatment step of performing a dispersion treatment on a reaction solution obtained in the polymerization step to prepare a dispersion of the polymerized product, wherein a dispersion medium is added one or more times at any point in time from after the polymerization step to during the dispersion treatment step to make a mass concentration (B) of the polymerized product in the dispersion after the dispersion treatment step lower than a mass concentration (A) of the polymerized product in the reaction solution.
    Type: Application
    Filed: December 1, 2016
    Publication date: December 27, 2018
    Applicant: SHOWA DENKO K.K.
    Inventors: Miyo FUJITA, Motoaki ARAKI, Takashi OHKUBO