Patents by Inventor Akihiko Ikuta

Akihiko Ikuta 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).

  • Friction stir welding tool and friction stir welding method
    Patent number: 11534854
    Abstract: Provided are a long-life and inexpensive friction stir welding tool that is not dependent on the mode of friction stir welding or the type of material to be welded, and a friction stir welding method using the friction stir welding tool. The friction stir welding tool comprises a body portion having a shoulder portion, and a probe portion disposed on a bottom surface of the body portion, and is characterized in that the probe portion is spherical-crown shaped. Preferably, the shoulder portion is flat or convex, and preferably the hardness of the shoulder portion is greater than the hardness of the probe portion.
    Type: Grant
    Filed: May 28, 2019
    Date of Patent: December 27, 2022
    Assignee: OSAKA UNIVERSITY
    Inventors: Hidetoshi Fujii, Yoshiaki Morisada, Yasuhiro Aoki, Akihiko Ikuta
  • FRICTION STIR WELDING TOOL AND FRICTION STIR WELDING METHOD
    Publication number: 20210220942
    Abstract: Provided are a long-life and inexpensive friction stir welding tool that is not dependent on the mode of friction stir welding or the type of material to be welded, and a friction stir welding method using the friction stir welding tool. The friction stir welding tool comprises a body portion having a shoulder portion, and a probe portion disposed on a bottom surface of the body portion, and is characterized in that the probe portion is spherical-crown shaped. Preferably, the shoulder portion is flat or convex, and preferably the hardness of the shoulder portion is greater than the hardness of the probe portion.
    Type: Application
    Filed: May 28, 2019
    Publication date: July 22, 2021
    Applicant: OSAKA UNIVERSITY
    Inventors: Hidetoshi Fujii, Yoshiaki Morisada, Yasuhiro Aoki, Akihiko Ikuta