Patents by Inventor Toshiyuki HIROKI

Toshiyuki HIROKI 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).

  • ARTIFICIAL GRAPHITE MATERIAL FOR LITHIUM ION SECONDARY BATTERY NEGATIVE ELECTRODE, AND PRODUCTION METHOD THEREFOR
    Publication number: 20230216052
    Abstract: A method for producing an artificial graphite material for a lithium ion secondary battery negative electrode, including at least a step of performing a coking treatment on a raw material oil composition by performing a delayed coking process to generate a raw coke composition, a step of performing a heat treatment on the raw coke composition to obtain a heat-treated raw coke composition, a step of crushing the heat-treated raw coke composition to obtain heat-treated raw coke powder, a step of graphitizing the heat-treated raw coke powder to obtain graphite powder, and a step of crushing the graphite powder, in which a volatile content of the heat-treated raw coke powder is less than 3.71%, and a true density of the heat-treated raw coke powder is greater than 1.22 g/cm3 and less than 1.73 g/cm3.
    Type: Application
    Filed: June 18, 2021
    Publication date: July 6, 2023
    Applicant: ENEOS CORPORATION
    Inventors: Takashi SUZUKI, Toshiyuki HIROKI, Zhen WANG, Keizo IKAI, Noriyuki KIUCHI, Takahiro SHIRAI