Patents by Inventor Taiichi Hijikata

Taiichi Hijikata 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).

  • Cast sand aeration apparatus
    Patent number: 5791571
    Abstract: A cast sand aeration apparatus is provided that is equipped with rotating pins with reduced wear. The apparatus consists of rod-like rotating pins, each of which is vertically cut out along a plane h offset toward the direction of rotation by 15-25 degrees relative to the axis of the rotating shaft so as to form a rod-like pin with a flat portion.
    Type: Grant
    Filed: July 31, 1996
    Date of Patent: August 11, 1998
    Assignee: Sintokogio, Ltd.
    Inventor: Taiichi Hijikata
  • Method of increasing the bulk density of iron oxide powder
    Patent number: 5718880
    Abstract: A method is provided of rapidly increasing the bulk density of an iron oxide powder by preventing the powder, processed by a roller consolidation machine, from flying up. The method consists of feeding an iron oxide powder, whose apparent bulk density is 0.4-0.6, into a sealed tank, depressurizing the tank to a vacuum of 100-200 torr, and revolving the rotating roller and rotating plow at a revolving speed of 1-2 m/sec.
    Type: Grant
    Filed: August 2, 1996
    Date of Patent: February 17, 1998
    Assignee: Sintokogio, Ltd.
    Inventor: Taiichi Hijikata