Patents by Inventor Hiroyuki Kidama

Hiroyuki Kidama 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).

  • Publication number: 20030022029
    Abstract: There are disclosed a surface coated sintered alloy member having a hard film coated on a base material of a sintered alloy of a cemented carbide or cermet, wherein the hard film comprises at least one Ti-containing layer which comprises at least one material selected from the group consisting of TiC, TiN, TiCN, TiCO, TiNO, TiCNO, a composite nitride, carbonitride, nitroxide, carboxide or carbonitroxide each containing Ti and Al, and the uppermost Ti-containing layer has a maximum surface roughness Rmax of 0.6 &mgr;m or less and an average surface roughness Ra of 0.2 &mgr;m or less in the reference length of 5 &mgr;m under conditions without being subjected to machining; and a surface coated sintered alloy member further comprising an aluminum oxide layer formed on the surface of the Ti-containing layer.
    Type: Application
    Filed: April 6, 2001
    Publication date: January 30, 2003
    Applicant: TOSHIBA TUNGALOY CO., LTD.
    Inventors: Hiroyuki Kidama, Nobukazu Yoshikawa, Itsuo Yazaki