Patents by Inventor Yoshihiro Takaura

Yoshihiro Takaura 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: 8637189
    Abstract: An electrode sheet includes a sheet of metal foil, at least one region coated with at least one active material layer subjected to working by rolling, the at least one coated region being provided in at least one central portion of the sheet of metal foil, at least one region uncoated with the at least one active material layer, the at least one uncoated region being provided in at least one edge portion of the sheet of metal foil, and at least one region subjected to working by drawing, the at least one drawn region being provided in at least a portion of the at least one uncoated region.
    Type: Grant
    Filed: August 5, 2011
    Date of Patent: January 28, 2014
    Assignee: GS Yuasa International Ltd.
    Inventors: Kazuya Okabe, Yoshikatsu Ohtani, Yoshihiro Takaura
  • Publication number: 20120045689
    Abstract: Embodiments of the present invention provide such things as an electrode sheet having little curl for a spiral wound battery and a manufacturing method therefor. An electrode sheet is such that active material layer(s) is/are present and has/have been subjected to working by rolling at entire surface(s) thereof, except for at least one uncoated region U, of electrode sheets) comprising sheet(s) of metal foil(s) S. Moreover, drawn region(s) is/are provided at region(s) uncoated with active material layer(s) in such uncoated region(s) U. By thus creating drawn region(s) at uncoated region(s) of the electrode sheet, curling of the electrode sheet is suppressed, and furthermore, when tension is applied to carry out winding of the electrode sheet and/or convey the electrode sheet to subsequent operation(s), there is reduced likelihood of occurrence of wrinkling and/or tearing in the long direction of the electrode sheet.
    Type: Application
    Filed: August 5, 2011
    Publication date: February 23, 2012
    Applicant: GS Yuasa International Ltd.
    Inventors: Kazuya OKABE, Yoshikatsu Ohtani, Yoshihiro Takaura