Patents by Inventor Kazuko Otani

Kazuko Otani 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).

  • Lithium ion electrolytic cell having a controlled electrode surface interface
    Patent number: 6030719
    Abstract: The present invention is directed to a lithium ion electrolytic cell having a controlled electrode surface interface, and, an associated electrochemical process. The lithium ion electrolytic cell includes an electrode with a carbonaceous surface and a passivating layer, and, an electrolyte having a solvent. The passivating layer includes lithium, carbon and at least one of an additive or the product of interaction of the additive with the carbonaceous surface. The passivating layer has, as measured by X-ray photoelectron spectroscopy, a relative thickness index within the range of about from 10 to about 90, and a lithium ion content index in the range from about 0.1 to about 0.7.
    Type: Grant
    Filed: August 20, 1998
    Date of Patent: February 29, 2000
    Assignee: Mitsubishi Chemical Corporation
    Inventors: Denis G. Fauteux, Jie Shi, Kazuko Otani, Eitaro Takahashi, Kenji Okahara