Patents by Inventor Kiyotaka Shimajiri

Kiyotaka Shimajiri 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).

  • Treating method for improving the strength of molded products of a thermosetting resin
    Patent number: 5786444
    Abstract: A treating method for improving the strength of molded products. Molded products of a thermosetting resin containing a phenol resin as a main component are taken out of a mold of an injection molding machine, and then immediately immersed in water or exposed to blown air. With this treatment, the breaking strength, particularly the toughness of the molded products is increased. This method provides molded products having a large strength at room temperature as well as at temperatures around 120.degree. C.
    Type: Grant
    Filed: February 25, 1997
    Date of Patent: July 28, 1998
    Assignee: Sanko Gosei Kabushiki Kaisha
    Inventors: Kiyotaka Shimajiri, Shozo Honda, Hiroshi Mizoguchi