Patents by Inventor Hiroko Ohnuma

Hiroko Ohnuma 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).

  • Non-aqueous electrolyte secondary cell
    Patent number: 6649307
    Abstract: The present invention provides a non-aqueous electrolyte secondary cell including: a cathode containing a manganese oxide or a lithium-manganese composite oxide; an anode containing a lithium metal, a lithium alloy, or a material capable of doping/dedoping lithium; and an electrolyte containing at least two electrolyte salts, one of which is LiBF4 contained in the range from 0.005 mol/l to 0.3 mol/l. This enables to increase the cycle characteristic, preventing deterioration of the cell characteristic caused by a repeated use.
    Type: Grant
    Filed: July 10, 2001
    Date of Patent: November 18, 2003
    Assignee: Sony Corporation
    Inventors: Hideki Terashima, Yuzuru Fukushima, Kimio Takahashi, Hiroko Ohnuma, Kotaro Satori, Akinori Kita
  • Non-aqueous electrolyte secondary cell
    Publication number: 20020127472
    Abstract: The present invention provides a non-aqueous electrolyte secondary cell including: a cathode containing a manganese oxide or a lithium-manganese composite oxide; an anode containing a lithium metal, a lithium alloy, or a material capable of doping/dedoping lithium; and an electrolyte containing at least two electrolyte salts, one of which is LiBF4 contained in the range from 0.005 mol/l to 0.3 mol/l. This enables to increase the cycle characteristic, preventing deterioration of the cell characteristic caused by a repeated use.
    Type: Application
    Filed: July 10, 2001
    Publication date: September 12, 2002
    Inventors: Hideki Terashima, Yuzuru Fukushima, Kimio Takahashi, Hiroko Ohnuma, Kotaro Satori, Akinori Kita