Patents by Inventor Fumio Tsushima

Fumio Tsushima 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).

  • Surface-coated cermet cutting tool with a hard coating layer exhibiting excellent chipping resistance
    Patent number: 7276301
    Abstract: A surface-coated cermet cutting tool with a hard-coating layer having excellent chipping resistance. The hard coating layer is formed on a surface of a tool substrate that constitutes the surface-coated cermet cutting tool.
    Type: Grant
    Filed: November 24, 2004
    Date of Patent: October 2, 2007
    Assignee: Mitsubishi Materials Corporation
    Inventors: Fumio Tsushima, Takuya Hayashi, Takatoshi Oshika
  • Surface-coated cermet cutting tool with hard coating layer having excellent chipping resistance
    Patent number: 7273665
    Abstract: There is provided a surface-coated cermet cutting tool with a hard-coating layer having excellent chipping resistance. The surface-coated cermet cutting tool is formed by coating, on a surface of a tool substrate made of WC-based cemented carbide or TiCN-based cermet, a hard-coating layer including the following upper and lower layers (a) and (b): (a) as the lower layer, a Ti compound layer having at least one or two of a TiC layer, a TiN layer, a TiCN layer, a TiCO layer and a TiCNO layer, all of which are deposited by chemical vapor deposition, the titanium compound layer having a total average thickness of 3 to 20 ?m, and (b) as the upper layer, a heat-transformed ?-type Al oxide layer formed by carrying out a heat-transforming treatment in a state that titanium oxide particulates satisfying the composition formula: TiOY, (where value Y is 1.2 to 1.
    Type: Grant
    Filed: December 21, 2004
    Date of Patent: September 25, 2007
    Assignee: Mitsubishi Materials Corporation
    Inventors: Takuya Hayahi, Fumio Tsushima, Takatoshi Oshika
  • Surface-coated cermet cutting tool with a hard coating layer exhibiting excellent chipping resistance
    Publication number: 20050214579
    Abstract: A surface-coated cermet cutting tool with a hard-coating layer having excellent chipping resistance. The hard coating layer is formed on a surface of a tool substrate that constitutes the surface-coated cermet cutting tool.
    Type: Application
    Filed: November 24, 2004
    Publication date: September 29, 2005
    Applicant: Mitsubishi Materials Corporation
    Inventors: Fumio Tsushima, Takuya Hayashi, Takatoshi Oshika
  • Surface-coated cermet cutting tool with hard coating layer having excellent chipping resistance
    Publication number: 20050164042
    Abstract: There is provided a surface-coated cermet cutting tool with a hard-coating layer having excellent chipping resistance. The surface-coated cermet cutting tool is formed by coating, on a surface of a tool substrate made of WC-based cemented carbide or TiCN-based cermet, a hard-coating layer including the following upper and lower layers (a) and (b): (a) as the lower layer, a Ti compound layer having at least one or two of a TiC layer, a TiN layer, a TiCN layer, a TICO layer and a TICNO layer, all of which are deposited by chemical vapor deposition, the titanium compound layer having a total average thickness of 3 to 20 ?m, and (b) as the upper layer, a heat-transformed ?-type Al oxide layer formed by carrying out a heat-transforming treatment in a state that titanium oxide particulates satisfying the composition formula: TiOY, (where value Y is 1.2 to 1.
    Type: Application
    Filed: December 21, 2004
    Publication date: July 28, 2005
    Applicant: Mitsubishi Materials Corporation
    Inventors: Takuya Hayahi, Fumio Tsushima, Takatoshi Oshika