TREA

Wilhelm Polhede

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  • Bruchkuebel, DE
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Patents Grantslast 30 patents

  • Information Patent Grant

    Apparatus for detecting gaseous discharge in vacuum furnaces
    • Patent number 5,193,100
    • Issue date Mar 9, 1993
    • Arthur Pfeiffer Vakuumtechnik Wetzlar GmbH
    • Robert Hack
    • F27 - FURNACES KILNS OVENS RETORTS
  • Information Patent Grant

    Heat treatment of materials
    • Patent number 4,850,576
    • Issue date Jul 25, 1989
    • Arthur Pfeiffer Vakuumtechnik Wetzlar GmbH
    • Robert Hack
    • B22 - CASTING POWDER METALLURGY
  • Information Patent Grant

    High vacuum seal
    • Patent number 4,244,557
    • Issue date Jan 13, 1981
    • Leybold-Heraeus GmbH
    • Wilhelm Polhede
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...