Patents by Inventor Akiko Hoshi

Akiko Hoshi 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 material for nonacqueous electrolyte secondary battery of high input/output current, method for producing the same and battery employing negative electrode material
    Patent number: 7718307
    Abstract: A negative electrode material for a high input/output currant-type non-aqueous electrolyte secondary battery, comprising a carbon material having an average (002) interlayer spacing d002 of 0.355-0.400 nm determined by X-ray diffractometry and a true density of 1.50-1.60 g/cm3, and exhibiting a capacity (A) of at least 50 mAh/g in a battery voltage range of 0.3-1.0 V and a ratio ((A)/(B)) of at least 0.3 between the capacity (A) and a capacity (B) in a battery voltage range of 0-1.0 V when measured as discharge capacities with a counter electrode of lithium. The negative electrode material is non-graphitizable and has properties suitable for a negative electrode material for high input/output current non-aqueous electrolyte secondary batteries as used in HEV, etc.
    Type: Grant
    Filed: March 29, 2005
    Date of Patent: May 18, 2010
    Assignee: Kureha Corporation
    Inventors: Kazuhiko Shimizu, Mariko Maeda, Syuji Morinishi, Aisaku Nagai, Akiko Hoshi
  • Negative Electrode Material for Nonacqueous Electrolyte Secondary Battery of High Input/Output Current, Method for Producing the Same and Battery Employing Negative Electrode Material
    Publication number: 20070287068
    Abstract: A negative electrode material for a high input/output currant-type non-aqueous electrolyte secondary battery, comprising a carbon material having an average (002) interlayer spacing d002 of 0.355-0.400 nm determined by X-ray diffractometry and a true density of 1.50-1.60 g/cm3, and exhibiting a capacity (A) of at least 50 mAh/g in a battery voltage range of 0.3-1.0 V and a ratio ((A)/(B)) of at least 0.3 between the capacity (A) and a capacity (B) in a battery voltage range of 0-1.0 V when measured as discharge capacities with a counter electrode of lithium. The negative electrode material is non-graphitizable and has properties suitable for a negative electrode material for high input/output current non-aqueous electrolyte secondary batteries as used in HEV, etc.
    Type: Application
    Filed: March 29, 2005
    Publication date: December 13, 2007
    Applicant: KUREHA CORPORATION
    Inventors: Kazuhiko Shimizu, Mariko Maeda, Syuji Morinishi, Aisaku Nagai, Akiko Hoshi