Patents by Inventor Michinari Asano

Michinari Asano 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).

  • Diamond sintered compact and a process for the production of the same
    Patent number: 6342301
    Abstract: The present invention aims at providing a material for a diamond sintered compact tool, which has a high strength and is available as a material for a cutting tool. Accordingly, the present invention is concerned with a diamond sintered compact comprising a WC-Co type cemented carbide substrate having slight undulation and a diamond sintered compact bonded to one surface of the substrate by sintering during a step of sintering at an ultra-high pressure and high temperature, which has a plate thickness is 0.5 mm to 5 mm and an outer diameter is at least 20 mm and whose diamond sintered compact layer has at least 50% of a thickness area within a range of 0.05 mm to 0.4 mm and contains Co diffusing from the cemented carbide substrate.
    Type: Grant
    Filed: July 28, 1999
    Date of Patent: January 29, 2002
    Assignee: Sumitomo Electric Industries, Ltd.
    Inventors: Katsuhito Yoshida, Michinari Asano, Junichi Shiraishi, Tetsuo Nakai