Patents by Inventor Rei Hanamura

Rei Hanamura 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).

  • Publication number: 20230137964
    Abstract: An electrode body housed, in a cylindrical battery can, in a spirally wound arrangement includes a sheet-like positive electrode, a sheet-like negative electrode, and a first separator laminate and a second separator laminate with one of the positive and negative electrodes therebetween (the negative electrode in the example of FIG. 2). Each of the first separator laminate and the second separator laminate has a layered structure including two or more separators (two in FIG. 2) welded together by a first weld region extending in a longitudinal direction along a first side and a second weld region extending in the longitudinal direction along a second side opposing the first side. The first separator laminate and the second separator laminate are welded together by a third weld region extending in the longitudinal direction along the first side and a fourth weld region extending in the longitudinal direction along the second side.
    Type: Application
    Filed: October 6, 2022
    Publication date: May 4, 2023
    Applicant: FDK CORPORATION
    Inventors: Junki YAMAMOTO, Koichi MOTOIKE, Sho SATO, Daisuke HIRATA, Rei HANAMURA
  • Patent number: 11509012
    Abstract: A thin-type battery includes: a flat shaped electrode body formed by stacking a positive electrode and a negative electrode while interposing a separator in between; an electrolyte; and an exterior body made from a laminate film, the exterior body enclosing the electrode body and the electrolyte with ends of the exterior body being hermetically sealed by heat-sealing, wherein the exterior body includes a folded part to be folded from one surface side to another surface side of the electrode body and to extend along an edge of the electrode body, and the folded part includes resin-interposed heat-sealing portions located in regions in two ends in a direction along the edge of the electrode body and outside the electrode body, where portions of the exterior body are opposed to each other, each resin-interposed heat-sealing portion being heat-sealed by interposing a piece made from a resin.
    Type: Grant
    Filed: September 25, 2020
    Date of Patent: November 22, 2022
    Assignee: FDK CORPORATION
    Inventors: Ayano Uemura, Rei Hanamura
  • Publication number: 20220231358
    Abstract: In a laminate-type power storage element, laminated films forming an exterior body are each formed by sandwiching a metal layer between a resin layer and a heat sealing layer. An electrode body includes a positive electrode and a negative electrode disposed opposite to each other across a separator and is enclosed together with a non-aqueous organic electrolyte solution inside the exterior body. Particles included in the positive electrode or negative electrode have a D90 particle size less than or equal to the thickness of the heat sealing layer.
    Type: Application
    Filed: December 20, 2021
    Publication date: July 21, 2022
    Applicant: FDK CORPORATION
    Inventors: Misako IKEYAMA, Rei HANAMURA, Ryuji ITO, Hiroshi YANAGI
  • Publication number: 20210013462
    Abstract: A thin-type battery includes: a flat shaped electrode body formed by stacking a positive electrode and a negative electrode while interposing a separator in between; an electrolyte; and an exterior body made from a laminate film, the exterior body enclosing the electrode body and the electrolyte with ends of the exterior body being hermetically sealed by heat-sealing, wherein the exterior body includes a folded part to be folded from one surface side to another surface side of the electrode body and to extend along an edge of the electrode body, and the folded part includes resin-interposed heat-sealing portions located in regions in two ends in a direction along the edge of the electrode body and outside the electrode body, where portions of the exterior body are opposed to each other, each resin-interposed heat-sealing portion being heat-sealed by interposing a piece made from a resin.
    Type: Application
    Filed: September 25, 2020
    Publication date: January 14, 2021
    Applicant: FDK CORPORATION
    Inventors: Ayano Uemura, Rei Hanamura