Patents by Inventor Atsuro Kondo

Atsuro Kondo 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).

  • Positive active material for non-aqueous electrolyte secondary battery and non-aqueous electrolyte secondary battery comprising same
    Patent number: 6924064
    Abstract: A positive active material for non-aqueous electrolyte secondary battery is provided comprising lithium manganese oxide having such a spinel structure that the half-width (2?) of the reflection peak corresponding to 440 plane as determined by X-ray diffractometry using CuK? ray is not greater than 0.145°. The use of this positive active material makes it possible to obtain a secondary battery which exhibits a good cycle life performance at room temperature and high temperatures and a reduced capacity drop when stored at high temperatures.
    Type: Grant
    Filed: November 5, 2001
    Date of Patent: August 2, 2005
    Assignee: Japan Storage Battery Co., Ltd.
    Inventors: Atsuro Kondo, Junichi Toriyama, Masanao Terasaki
  • Positive active material for non-aqueous electrolyte secondary battery and non-aqueous electrolyte secondary battery comprising same
    Publication number: 20020081494
    Abstract: A positive active material for non-aqueous electrolyte secondary battery is provided comprising lithium manganese oxide having such a spinel structure that the half-width (2&thgr;) of the reflection peak corresponding to 440 plane as determined by X-ray diffractometry using CuK&agr; ray is not greater than 0.145°. The use of this positive active material makes it possible to obtain a secondary battery which exhibits a good cycle life performance at room temperature and high temperatures and a reduced capacity drop when stored at high temperatures.
    Type: Application
    Filed: November 5, 2001
    Publication date: June 27, 2002
    Applicant: JAPAN STORAGE BATTERY CO., LTD.
    Inventors: Atsuro Kondo, Junichi Toriyama, Masanao Terasaki