Patents by Inventor Akria Yajima

Akria Yajima 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).

  • Nonaqueous electrolyte secondary battery
    Publication number: 20050221180
    Abstract: A nonaqueous electrolyte secondary battery includes a nonaqueous electrolyte and a positive electrode including an active material containing lithium composite oxide powder, the lithium composite oxide powder includes secondary particles, exhibits a peak intensity ratio satisfying the following formula (4), satisfies the following formula (5), and has a particle distribution wherein a particle diameter at a volumetric cumulative frequency of 90% (D90) falls within the range of 10 to 25 ?m, and the nonaqueous electrolyte contains a sultone compound including a ring having at least one double bond; 2?(I003/I104)<5 ??(4) 0.95?(XLi/XM)?1.
    Type: Application
    Filed: May 4, 2005
    Publication date: October 6, 2005
    Applicant: Kabushiki Kaisha Toshiba
    Inventors: Nao Shimura, Koshin Tanaka, Masahiro Sekino, Asako Satoh, Shusuke Inada, Akria Yajima, Masayuki Oguchi