Patents by Inventor Syuzo Sasagawa

Syuzo Sasagawa 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 producing an obliquely oriented film of thermoplastic synthetic resin
    Patent number: 4009975
    Abstract: A device for producing an obliquely oriented film of thermoplastic synthetic resin comprising an extruder, an annular die for forming the resin extruded from the extruder, a first mandrel, a second mandrel, and drawing rolls for drawing the resinous film passed over the first mandrel and then second mandrel. Said first and second mandrels are rotated in the different directions from each other.
    Type: Grant
    Filed: January 2, 1976
    Date of Patent: March 1, 1977
    Assignee: Mitsui Petrochemical Industries, Ltd.
    Inventors: Tomokazu Ninomiya, Syuzo Sasagawa, Hideo Washio, Nobuhiro Hirata