Patents by Inventor Yasuo Iisaka

Yasuo Iisaka 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).

  • Device for unfolding a shaped metal article and a method for unfolding the same
    Patent number: 5924320
    Abstract: In a device and method for unfolding a shaped metal article having a longitudinal bent or curved portion, the shaped metal article is unfolded along the bent or curved portion. The device is provided with a vacuum-type absorbing means for absorbing at least one side of the shaped metal article adjacent to the bent or curved portion. The one side of the shaped metal article is unfolded against the other side of the shaped metal article about the bent or curved portion.
    Type: Grant
    Filed: June 26, 1997
    Date of Patent: July 20, 1999
    Assignee: Showa Aluminum Corporation
    Inventors: Hirozo Michisaka, Saburo Washo, Yasuo Iisaka, Kenzo Shitashimizu