Patents by Inventor Akio Katsura

Akio Katsura 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).

  • Metal mold having a ceramic coating for forming sintered part
    Patent number: 5092558
    Abstract: Ceramic coated metal mold having a constant ceramic film thickness, which is superior in adhesion resistance and abrasion resistance, prepared by coating the inside and outside walls of a metal mold with ceramics, by the physical vapor deposition method. The ceramic coating is selected from one of TiC, TiN, and TiCN. The mold surfaces to which the coating is applied has a surface roughness of 1 S or less and the end corners have a radius R of 0.1-0.3 mm, to provide adhesion between the metal mold and the ceramic coating.
    Type: Grant
    Filed: August 13, 1990
    Date of Patent: March 3, 1992
    Assignee: Sumitomo Electric Industries, Ltd.
    Inventor: Akio Katsura