Patents by Inventor Josef Liebmann

Josef Liebmann has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Slide-ring gasket
    Publication number: 20070194537
    Abstract: In a slide-ring gasket of stainless steel with a wear resistant coating (3) at the end planes (6) facing each other, the wear resistant coating (3) starting from the outer rim (3) of the slide-ring gasket extends in a radial direction only over an annular part section (5) of the end planes (6) facing each other.
    Type: Application
    Filed: March 9, 2005
    Publication date: August 23, 2007
    Applicant: Voest-Alpine Bergtechnik Gesellschaft m.b.H
    Inventors: Karl Lerchbaum, Josef Liebmann, Ernst Stergar