Patents by Inventor Frederick J. Feiertag

Frederick J. Feiertag 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 for the nondestructive testing of cellular metallics
    Patent number: 4381666
    Abstract: Method of nondestructively measuring percent elongation or ductility of a cellular metallic. After surface preparation, the number of metal cells per unit area are counted, either manually or using an automated technique. The cell count is utilized in a relationship unique to the cellular metallic which correlates cell count to ductility in terms of percent elongation. The effects of the structural configuration of the cellular metallic, porosity and eutectic morphology are also discussed.
    Type: Grant
    Filed: April 27, 1981
    Date of Patent: May 3, 1983
    Assignee: The Boeing Company
    Inventors: Frederick J. Feiertag, Dale L. McLellan