Patents by Inventor NAO MIYAGUCHI

NAO MIYAGUCHI 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).

  • ELECTROCHEMICAL CAPACITOR
    Publication number: 20240194421
    Abstract: An electrochemical capacitor includes a positive electrode, a negative electrode, a separator disposed between the positive electrode and the negative electrode, and an electrolytic solution. The electrolytic solution contains a lactone compound. A capacity of the positive electrode is greater than a capacity of the negative electrode and is less than or equal to 1.6 times of the capacity of the negative electrode.
    Type: Application
    Filed: February 22, 2022
    Publication date: June 13, 2024
    Inventor: NAO MIYAGUCHI
  • ELECTROCHEMICAL CAPACITOR
    Publication number: 20240128031
    Abstract: An electrochemical capacitor includes: a positive electrode; a negative electrode; a separator disposed between the positive electrode and the negative electrode; and an electrolytic solution. The electrolytic solution contains a lactone compound. A capacity of the positive electrode is greater than the capacity of the negative electrode and is less than or equal to 1.6 times the capacity of the negative electrode.
    Type: Application
    Filed: March 17, 2022
    Publication date: April 18, 2024
    Inventor: NAO MIYAGUCHI
  • Electrolyte solution for electrochemical device, and electrochemical device
    Patent number: 11948741
    Abstract: An electrolytic solution for an electrochemical device a solvent, an ionic substance, and an additive agent, the additive agent containing ?-methyl-?-butyrolactone and ?-valerolactone.
    Type: Grant
    Filed: May 18, 2021
    Date of Patent: April 2, 2024
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Keisuke Masunaga, Hideo Sakata, Nao Miyaguchi
  • ELECTROLYTE SOLUTION FOR ELECTROCHEMICAL DEVICE, AND ELECTROCHEMICAL DEVICE
    Publication number: 20230230777
    Abstract: An electrolytic solution for an electrochemical device a solvent, an ionic substance, and an additive agent, the additive agent containing ?-methyl-?-butyrolactone and ?-valerolactone.
    Type: Application
    Filed: May 18, 2021
    Publication date: July 20, 2023
    Inventors: KEISUKE MASUNAGA, HIDEO SAKATA, NAO MIYAGUCHI
  • ELECTROCHEMICAL DEVICE
    Publication number: 20230197359
    Abstract: An electrochemical device includes a pair of electrodes and an electrolytic solution. At least one of the pair of electrodes contains porous carbon particles. In a pore distribution of the porous carbon particles, an integrated volume B is more than or equal to 0.15 cm3/g and an integrated volume C is less than or equal to 0.25 cm3/g. The integrated volume B is an integrated volume of pores each having a pore diameter of more than or equal to 20 Å and less than or equal to 60 Å. The integrated volume C is an integrated volume of pores each having a pore diameter of more than 60 Å and less than or equal to 500 Å.
    Type: Application
    Filed: May 18, 2021
    Publication date: June 22, 2023
    Inventor: NAO MIYAGUCHI