Patents by Inventor Johann H. Kern

Johann H. Kern 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).

  • Pipe separator
    Patent number: 4745946
    Abstract: A pipe separator (1) comprising a control valve (7) for actuating a sliding valve (4) is provided. In order to increase the service time of the sliding valve by avoiding an unnecessary switching frequency, a two positions-three directions directional valve acting as a damping element is additionally provided.
    Type: Grant
    Filed: January 28, 1987
    Date of Patent: May 24, 1988
    Inventor: Johann H. Kern