Patents by Inventor Shunsuke Yamakawa

Shunsuke Yamakawa 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).

  • Sintered body and method for manufacturing thereof
    Patent number: 11594756
    Abstract: The sintered body has an average particle size in the range of 0.1 ?m or more and 5 ?m or less, includes gamet-type oxide base material particles having at least Li, La, and Zr, has 8% by volume or more of voids, and has an ionic conductivity of 1.0×10?5 S/cm or more at temperature of 25° C.
    Type: Grant
    Filed: July 28, 2020
    Date of Patent: February 28, 2023
    Assignee: DENSO CORPORATION
    Inventors: Shunsuke Yamakawa, Shingo Ohta, Masaki Watanabe, Naohiro Hayashi, Keita Takahashi
  • SINTERED BODY AND METHOD FOR MANUFACTURING THEREOF
    Publication number: 20210036361
    Abstract: The sintered body has an average particle size in the range of 0.1 ?m or more and 5 ?m or less, includes gamet-type oxide base material particles having at least Li, La, and Zr, has 8% by volume or more of voids, and has an ionic conductivity of 1.0×10?5 S/cm or more at temperature of 25° C.
    Type: Application
    Filed: July 28, 2020
    Publication date: February 4, 2021
    Inventors: Shunsuke YAMAKAWA, Shingo OHTA, Masaki WATANABE, Naohiro HAYASHI, Keita TAKAHASHI
  • Surface treatment method of hydrogen absorbing alloy
    Patent number: 6129789
    Abstract: Steam is contacted with a hydrogen absorbing alloy in a temperature range from 200.degree. C. to 400.degree. C. With a contact catalytic reaction of water, a metal contained in the hydrogen absorbing alloy is changed to an oxide or a hydroxide. Hydrogen produced causes the Ni compound to be reduced and thereby the Ni metal that is catalytically active is produced. Thus, the surface of the hydrogen absorbing alloy is activated. The steam is contained in an inert gas or a reductive gas. This treatment method is suitable as an activation treatment for a hydrogen absorbing alloy used as an active material of a negative electrode of a secondary battery.
    Type: Grant
    Filed: December 17, 1996
    Date of Patent: October 10, 2000
    Assignee: Kabushiki Kaisha Toyoda Jidoshokki Seisakusho
    Inventors: Hiroshi Kawase, Shin-ichi Towata, Kazuhiko Itoh, Shunsuke Yamakawa, Katsushi Abe, Yutaka Ohya, Shinya Morishita