Patents by Inventor Yuko Yabuuchi

Yuko Yabuuchi 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).

  • Ion-conducting membrane production method and production device
    Patent number: 10774190
    Abstract: A method of producing an ion-conducting membrane containing a polymer having an ionic group, involves multiple liquid treatment steps in which a precursor membrane is brought into contact with an acid treatment solution or an alkali treatment solution, the precursor membrane containing a polymer in a state in which the aforementioned ionic group forms a salt with an impurity ion, wherein the liquid treatment time in the second and subsequent liquid treatment steps of the multiple liquid treatment steps is shorter than the liquid treatment time in the initial liquid treatment step.
    Type: Grant
    Filed: February 1, 2017
    Date of Patent: September 15, 2020
    Assignee: Toray Industries, Inc.
    Inventors: Seiji Fukuda, Yuko Yabuuchi
  • ION-CONDUCTING MEMBRANE PRODUCTION METHOD AND PRODUCTION DEVICE
    Publication number: 20200262990
    Abstract: A method of producing an ion-conducting membrane containing a polymer having an ionic group, involves multiple liquid treatment steps in which a precursor membrane is brought into contact with an acid treatment solution or an alkali treatment solution, the precursor membrane containing a polymer in a state in which the aforementioned ionic group forms a salt with an impurity ion, wherein the liquid treatment time in the second and subsequent liquid treatment steps of the multiple liquid treatment steps is shorter than the liquid treatment time in the initial liquid treatment step.
    Type: Application
    Filed: February 1, 2017
    Publication date: August 20, 2020
    Inventors: Seiji Fukuda, Yuko Yabuuchi