Patents by Inventor Kyohei YOSHIOKA

Kyohei YOSHIOKA 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).

  • CONDUCTIVE CARBON, METHOD FOR PRODUCING SAME, METHOD FOR PRODUCING CONDUCTIVE CARBON MIXTURE CONTAINING SAID CONDUCTIVE CARBON, AND METHOD FOR PRODUCING ELECTRODE USING SAID CONDUCTIVE CARBON OR CONDUCTIVE CARBON MIXTURE
    Publication number: 20230395805
    Abstract: The present invention provides a conductive carbon which enables the achievement of an electricity storage device that has high energy density, while exhibiting improved charge/discharge cycle stability even during high voltage application. A conductive carbon according to the present invention is produced by a method which comprises: an oxidation step wherein a carbon starting material is subjected to an oxidation treatment, thereby obtaining an oxidation-treated carbon that spreads in a paste-like state when a pressure is applied thereto; and a heat treatment step wherein the oxidation-treated carbon is subjected to a heat treatment under a vacuum or in a non-oxidizing atmosphere. Since CO2 is separated from the oxidation-treated carbon during the heat treatment process, the amount of CO2 generated from the thus-obtained conductive carbon in the temperature range of from 25° C. to 200° C. is smaller than the amount of CO2 generated from the oxidation-treated carbon in the temperature range of from 25° C.
    Type: Application
    Filed: August 19, 2021
    Publication date: December 7, 2023
    Applicant: NIPPON CHEMI-CON CORPORATION
    Inventors: Satoyuki TATSUMI, Noriyuki MIYAMOTO, Daisuke HORII, Satoshi KUBOTA, Kyohei YOSHIOKA, Sekihiro TAKEDA