Patents by Inventor Munetaka HIGUCHI

Munetaka HIGUCHI 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 AND PRODUCTION METHOD THEREOF
    Publication number: 20220085377
    Abstract: A lithium ion secondary battery includes: a positive electrode having a positive electrode active material layer on a surface of a positive electrode collector; a negative electrode a having a negative electrode active material layer on a surface of a negative electrode collector; and a nonaqueous electrolyte. The positive electrode, the negative electrode, and the nonaqueous electrolyte are accommodated in a battery case. The nonaqueous electrolyte contains ?-butyrolactone as a main component of a nonaqueous solvent. A monoalkyl sulfate ion-derived coat is formed on the surface of the positive electrode active material layer. A VC-derived coat is formed on the surface of the negative electrode active material layer.
    Type: Application
    Filed: September 9, 2021
    Publication date: March 17, 2022
    Inventors: Kei SHIMAMOTO, Takao FUKUNAGA, Hideyuki SUGIYAMA, Wataru MASUDA, Hiroki FUJITA, Munetaka HIGUCHI
  • LITHIUM ION SECONDARY BATTERY AND PRODUCTION METHOD THEREOF
    Publication number: 20210083296
    Abstract: A lithium ion secondary battery includes: a positive electrode having a positive electrode active material layer on a surface of a positive electrode collector; a negative electrode having a negative electrode active material layer on a surface of a negative electrode collector; and a nonaqueous electrolyte. The positive electrode, the negative electrode, and the nonaqueous electrolyte are accommodated in a battery case. The nonaqueous electrolyte contains ?-butyrolactone as a main component of a nonaqueous solvent. A BOB ion-derived coat is formed on the surface of the positive electrode active material layer. A VC-derived coat is formed on the surface of the negative electrode active material layer.
    Type: Application
    Filed: September 4, 2020
    Publication date: March 18, 2021
    Inventors: Kei SHIMAMOTO, Takao FUKUNAGA, Hideyuki SUGIYAMA, Wataru MASUDA, Hiroki FUJITA, Munetaka HIGUCHI