Patents by Inventor Yohei Hirumi

Yohei Hirumi 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).

  • GRAPHITE ELECTRODE, ELECTRIC FURNACE
    Publication number: 20240147585
    Abstract: A graphite electrode includes a pole having a socket in an internal screw shape at an end portion, and a nipple in an external screw shape that can be fastened to the socket, wherein a value obtained by subtracting an effective diameter on a small diameter end side of the nipple from an effective diameter on a small diameter end side of the socket is 0.05 to 0.7 mm, and a value obtained by subtracting a taper angle of the socket from a taper angle of the nipple is ?2 minutes to ?3 minutes 30 seconds.
    Type: Application
    Filed: September 29, 2021
    Publication date: May 2, 2024
    Applicant: TOKAI CARBON CO., LTD.
    Inventors: Yohei Hirumi, Yoshihiko Kashihara, Mitsuhiro Adachi