TREA

Eckhard Welker

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  • Wietze, DE
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Patents Grantslast 30 patents

  • Information Patent Grant

    Process for the production of a capacitor microphone and a capacito...
    • Patent number 9,179,234
    • Issue date Nov 3, 2015
    • Sennheiser electronic GmbH & Co. KG
    • Vladimir Gorelik
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Condenser microphone
    • Patent number 8,019,101
    • Issue date Sep 13, 2011
    • Sennheiser electronic GmbH & Co. KG
    • Vladimir Gorelik
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Capacitor microphone
    • Patent number 7,881,484
    • Issue date Feb 1, 2011
    • Sennheiser electronic GmbH & Co. KG
    • Vladimir Gorelik
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

  • Information Patent Application

    Process for the production of a capacitor microphone and a capacito...
    • Publication number 20140133679
    • Publication date May 15, 2014
    • Sennheiser electronic GmbH & Co., KG
    • Vladimir Gorelik
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Application

    CONDENSER MICROPHONE
    • Publication number 20080063233
    • Publication date Mar 13, 2008
    • Sennheiser Electronic GmbH & Co. KG
    • VLADIMIR GORELIK
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Application

    Capacitor Microphone
    • Publication number 20070242847
    • Publication date Oct 18, 2007
    • Sennheiser Electronic GmbH & Co. KG
    • Vladimir Gorelik
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE