Patents by Inventor Gunter Wengenrod

Gunter Wengenrod 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).

  • Resistive heating of elongated stock
    Patent number: 4115685
    Abstract: Tubes, rods, etc., are heated electrically in that current is applied via movable electrodes, one of which tracks the front and another one tracks the rear ends, but the electrodes remain spaced-apart during most of the heating.
    Type: Grant
    Filed: July 1, 1977
    Date of Patent: September 19, 1978
    Assignee: Mannesmann Aktiengesellschaft
    Inventors: Friedrich-Hans Grandin, Werner Fritsch, Gunter Wengenrod