Patents by Inventor Kazuharu Simowaki

Kazuharu Simowaki 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).

  • Process for producing ductile iron casting
    Patent number: 3965962
    Abstract: A process for producing sound ductile cast iron crank shafts without the use of chillers and also with no, or substantially no, blind risers at the upper ends of the cast crank shafts in the bottom gating-type of vertical pouring system. The process comprises pouring a specifically treated ductile cast iron melt having a high outward expansion property during its eutectic solidification into a specific metal mold assembly having a high rigidity and a high thermal conductivity.
    Type: Grant
    Filed: February 21, 1975
    Date of Patent: June 29, 1976
    Assignee: Toyo Kogyo Co., Ltd.
    Inventors: Toshiaki Tanaka, Shunsuke Yamaguchi, Kazuharu Simowaki