Patents by Inventor Eishiro Sakurai

Eishiro Sakurai 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 blow molding and then exhausting hollow plastic articles
    Patent number: 4092389
    Abstract: In a method of manufacturing a hollow plastic molded article wherein a unit parison is accommodated in a metal mold and pressurized gas is admitted into the unit parison for blow molding the same, pressurized gas is ejected to the outside of the wall of the unit parison for forming an inlet port through the wall thereby blowing the pressurized gas into the unit parison through the inlet port thereby blow molding the unit parison.
    Type: Grant
    Filed: December 1, 1975
    Date of Patent: May 30, 1978
    Assignee: Toyo Seikan Kaisha Ltd.
    Inventor: Eishiro Sakurai