Patents by Inventor Aki TANABE

Aki TANABE 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 SECONDARY BATTERY
    Publication number: 20200373611
    Abstract: A lithium-ion secondary battery includes a positive electrode, a negative electrode, and an electrolytic solution. The positive electrode includes a positive electrode active material. The positive electrode active material includes lithium (Li) and fluorine (F). The electrolytic solution includes a dioxane compound. A content of the dioxane compound is from 0.1 wt % to 2.0 wt %.
    Type: Application
    Filed: August 7, 2020
    Publication date: November 26, 2020
    Inventors: Masahiro MIYAMOTO, Shinichi KATAYAMA, Aki TANABE
  • Semiconductor switch circuit
    Patent number: 4794441
    Abstract: A semiconductor switch circuit of field-drive type includes a bipolar component having forward blocking and reverse blocking junctions, and p-channel and n-channel IGPETS connected across the bipolar component so as to short-circuit its forward blocking junction. The switch circuit operates to turn on or off in response to the voltage signal to the gate circuit which is isolated from the bipolar component, irrespective of the polarity of a voltage applied across the bipolar component.
    Type: Grant
    Filed: June 24, 1985
    Date of Patent: December 27, 1988
    Assignees: Hitachi Ltd., Nippon Telegraph & Telephone
    Inventors: Yoshitaka Sugawara, Junjiro Kitano, Tadakatsu Kimura, Yasunobu Inabe, Masa-aki Tanabe