Patents by Inventor Carsten Pfister

Carsten Pfister 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).

  • Corrugated pipe with foot
    Patent number: 6164338
    Abstract: The invention relates to a corrugated pipe which, in accordance with the invention includes an engagement structure formed perpendicular to the longitudinal extent of the corrugated pipe, whereby the engagement structure includes a portion dimensioned in circumferential direction of the corrugated pipe which is further radially spaced from the inner diameter of the pipe.
    Type: Grant
    Filed: April 2, 1999
    Date of Patent: December 26, 2000
    Assignee: Frankische Rohrwerke Gebr. Kirchner GmbH & Co.
    Inventors: Willi Holzer, Manfred Krauss, Tilo Neubauer, Carsten Pfister