TREA

Donald A. Botbyl

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  • Greensburg, PA, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Cemented carbide tool and method of making
    • Patent number 6,998,173
    • Issue date Feb 14, 2006
    • Kennametal Inc.
    • Yixiong Liu
    • C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
  • Information Patent Grant

    method of making cemented carbide tool
    • Patent number 6,638,474
    • Issue date Oct 28, 2003
    • Kennametal Inc.
    • Yixiong Liu
    • C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...

Patents Applicationslast 30 patents

  • Information Patent Application

    Cemented carbide tool and method of making
    • Publication number 20030126945
    • Publication date Jul 10, 2003
    • Yixiong Liu
    • C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
  • Information Patent Application

    Cemented carbide tool and method of making
    • Publication number 20010041107
    • Publication date Nov 15, 2001
    • Kennametal Inc.,
    • Yixiong Liu
    • C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...