TREA

Frederick W. Kruppert

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  • Goulais River, CA
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Patents Grantslast 30 patents

  • Information Patent Grant

    Apparatus for quenching steel pipes
    • Patent number 4,575,054
    • Issue date Mar 11, 1986
    • Kruppert Enterprises, Inc.
    • Frederick W. Kruppert
    • C21 - METALLURGY OF IRON
  • Information Patent Grant

    Apparatus for heat treating steel
    • Patent number 4,504,042
    • Issue date Mar 12, 1985
    • Kruppert Enterprises, Inc.
    • Frederick W. Kruppert
    • C21 - METALLURGY OF IRON
  • Information Patent Grant

    Method for heat treating steel
    • Patent number 4,490,187
    • Issue date Dec 25, 1984
    • Kruppert Enterprises, Inc.
    • Frederick W. Kruppert
    • C21 - METALLURGY OF IRON
  • Information Patent Grant

    Steel hardening method
    • Patent number 3,997,375
    • Issue date Dec 14, 1976
    • The Algoma Steel Corporation, Limited
    • Louis E. Franceschina
    • C21 - METALLURGY OF IRON