Patents by Inventor Takeshi Ogasawa

Takeshi Ogasawa 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 ELECTRODE ACTIVE MATERIAL FOR NONAQUEOUS ELECTROLYTE SECONDARY BATTERY, METHOD FOR MAKING THE SAME, POSITIVE ELECTRODE INCLUDING THE SAME, AND BATTERY INCLUDING THE POSITIVE ELECTRODE
    Publication number: 20110318653
    Abstract: A positive electrode active material for a nonaqueous electrolyte secondary battery includes a positive electrode active material particle and a compound containing a rare earth element and a carbonate, the compound having a particle size of 1 to 100 nm and being adhered to a surface of the positive electrode active material particle. The ratio of the compound relative to the positive electrode active material particle is 0.005% to 0.4% by mass on a rare earth element basis. The positive electrode active material particle is composed of a lithium transition metal oxide having a layered structure.
    Type: Application
    Filed: June 27, 2011
    Publication date: December 29, 2011
    Applicant: SANYO ELECTRIC CO., LTD.
    Inventors: Hiroyuki Matsumoto, Takeshi Ogasawa