Patents by Inventor Fritz Haug

Fritz Haug 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).

  • Device for defect testing of non-ferromagnetic test samples and for ferromagnetic inclusions
    Patent number: 4954777
    Abstract: Detection of both surface defects of a non-ferromagnetic test body as well s the presence of ferromagnetic particles in the test body by inducing eddy currents and D.C. fields in the body. The resulting signal voltages are filtered and separately examined.
    Type: Grant
    Filed: December 9, 1988
    Date of Patent: September 4, 1990
    Assignee: Institut Dr. Friedrich Forster Prufgeratebau GmbH & Co. KG
    Inventors: Walter Klopfer, Fritz Haug, Dale Gabauer, James Workley