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Howard R. Harker

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  • Malvern, PA, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Static vacuum casting of ingots
    • Patent number 5,291,940
    • Issue date Mar 8, 1994
    • Axel Johnson Metals, Inc.
    • Janine C. Borofka
    • B22 - CASTING POWDER METALLURGY
  • Information Patent Grant

    Intermediate pressure electron beam furnace
    • Patent number 5,222,547
    • Issue date Jun 29, 1993
    • Axel Johnson Metals, Inc.
    • Howard R. Harker
    • B22 - CASTING POWDER METALLURGY
  • Information Patent Grant

    Vacuum processing of particulate reactive metal
    • Patent number 5,171,357
    • Issue date Dec 15, 1992
    • Axel Johnson Metals, Inc.
    • Carlos E. Aguirre
    • B22 - CASTING POWDER METALLURGY
  • Information Patent Grant

    Method of operating an electron beam furnace
    • Patent number 5,100,463
    • Issue date Mar 31, 1992
    • Axel Johnson Metals, Inc.
    • Howard R. Harker
    • B22 - CASTING POWDER METALLURGY
  • Information Patent Grant

    Vacuum processing of reactive metal
    • Patent number 5,084,090
    • Issue date Jan 28, 1992
    • Axel Johnson Metals, Inc.
    • Howard R. Harker
    • C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
  • Information Patent Grant

    Cold hearth refining
    • Patent number 4,961,776
    • Issue date Oct 9, 1990
    • Axel Johnson Metals, Inc.
    • Howard R. Harker
    • B22 - CASTING POWDER METALLURGY
  • Information Patent Grant

    Continuous casting of ingots
    • Patent number 4,936,375
    • Issue date Jun 26, 1990
    • Axel Johnson Metals, Inc.
    • Howard R. Harker
    • B22 - CASTING POWDER METALLURGY
  • Information Patent Grant

    Cold hearth refining apparatus
    • Patent number 4,932,635
    • Issue date Jun 12, 1990
    • Axel Johnson Metals, Inc.
    • Howard R. Harker
    • B22 - CASTING POWDER METALLURGY
  • Information Patent Grant

    Continuous casting of fine grain ingots
    • Patent number 4,838,340
    • Issue date Jun 13, 1989
    • Axel Johnson Metals, Inc.
    • Charles H. Entrekin
    • B22 - CASTING POWDER METALLURGY
  • Information Patent Grant

    Cold hearth refining
    • Patent number RE32932
    • Issue date May 30, 1989
    • A Johnson Metals Corporation
    • Howard R. Harker
    • 164 - Metal founding
  • Information Patent Grant

    Electron beam cold hearth refining
    • Patent number 4,750,542
    • Issue date Jun 14, 1988
    • A. Johnson Metals Corporation
    • Howard R. Harker
    • C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...