Patents by Inventor Yoshio Sasahara

Yoshio Sasahara 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).

  • Method of producing connector fittings for pipes
    Patent number: 4051709
    Abstract: A method of producing connector fittings for pipes by using press machine comprising the steps of forming a semicircular recess in the upper surface of each of a pair of blanks placed in parallel and contact with each other as a first step, and forming a semicircular inner recess for holding flange of a pipe simultaneously with forming a pair of parts in which bolt holes are formed.
    Type: Grant
    Filed: August 16, 1976
    Date of Patent: October 4, 1977
    Assignee: Kabushiki Kaisha Taishin Seisakusho
    Inventor: Yoshio Sasahara