Patents by Inventor Thomas Hoepfel

Thomas Hoepfel 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).

  • Method and apparatus for producing samples of primarily finely granulated and dry material
    Patent number: 7134350
    Abstract: An apparatus and a method for producing samples of a finely granular and dry material for measuring the residual carbon content thereof. The material is fed by a torque monitored conveyor screw to a measuring chamber and is progressively compacted therein. At an abrupt increase in screw torque feeding of the material ceases yielding a sample in the measuring chamber of a reproducible degree of compaction.
    Type: Grant
    Filed: February 5, 2002
    Date of Patent: November 14, 2006
    Assignee: Promecon Prozess- und Messtechnik Conrads GmbH.
    Inventors: Hans Georg Conrads, Volkhard Klupsch, Thomas Hoepfel