TREA

Helmut Petersein

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  • Gelnhausen-Hochst, DE
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Patents Grantslast 30 patents

  • Information Patent Grant

    Hard, gold-colored under layer for a gold or gold-containing surfac...
    • Patent number 4,791,017
    • Issue date Dec 13, 1988
    • Leybold-Heraeus GmbH
    • Dieter Hofmann
    • C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
  • Information Patent Grant

    Electron beam vaporizer
    • Patent number 4,115,653
    • Issue date Sep 19, 1978
    • Leybold-Heraeus GmbH & Co. KG
    • Gerhard Kienel
    • C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...