Patents by Inventor Ayaka Igarashi

Ayaka Igarashi 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).

  • Negative electrode mixture for nonaqueous electrolyte secondary batteries, negative electrode for nonaqueous electrolyte secondary batteries, and nonaqueous electrolyte secondary battery
    Patent number: 8642210
    Abstract: A negative electrode mixture for nonaqueous electrolyte secondary batteries that can form a mixture layer showing excellent peel strength with a collector in the manufacturing of negative electrodes for nonaqueous electrolyte secondary batteries is provided. The negative electrode mixture for nonaqueous electrolyte secondary batteries includes at least one inorganic substance selected from hydrogen chloride, hydrogen bromide, sulfuric acid and inorganic salts represented by Formula (A) below, an electrode active material, a polar group-containing vinylidene fluoride polymer and an organic solvent, the inorganic substance being contained at 10 to 500 ppm based on 100 wt % of the electrode active material; MX . . . (A), wherein M is an alkali metal, and X is Cl or Br.
    Type: Grant
    Filed: August 13, 2009
    Date of Patent: February 4, 2014
    Inventors: Mitsuyasu Sakuma, Ayaka Igarashi, Nobuo Ahiko
  • Negative Electrode Mixture for Nonaqueous Electrolyte Secondary Batteries, Negative Electrode for Nonaqueous Electrolyte Secondary Batteries, and Nonaqueous Electrolyte Secondary Battery
    Publication number: 20110177390
    Abstract: A negative electrode mixture for nonaqueous electrolyte secondary batteries that can form a mixture layer showing excellent peel strength with a collector in the manufacturing of negative electrodes for nonaqueous electrolyte secondary batteries is provided. The negative electrode mixture for nonaqueous electrolyte secondary batteries includes at least one inorganic substance selected from hydrogen chloride, hydrogen bromide, sulfuric acid and inorganic salts represented by Formula (A) below, an electrode active material, a polar group-containing vinylidene fluoride polymer and an organic solvent, the inorganic substance being contained at 10 to 500 ppm based on 100 wt % of the electrode active material; MX . . . (A), wherein M is an alkali metal, and X is Cl or Br.
    Type: Application
    Filed: August 13, 2009
    Publication date: July 21, 2011
    Applicant: KUREHA CORPORATION
    Inventors: Mitsuyasu Sakuma, Ayaka Igarashi, Nobuo Ahiko