Patents by Inventor Jürgen Nägeler

Jürgen Nägeler 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).

  • Process and device for producing press fittings from steel, in particular special steel
    Patent number: 6843096
    Abstract: Special steel press fittings are produced in two process steps, which can be performed simultaneously, or also one after the other. The cut to size blank is widened in a die is upset in order to form the desired pipe connection areas.
    Type: Grant
    Filed: May 16, 2001
    Date of Patent: January 18, 2005
    Assignee: Witzig & Frank GmbH
    Inventors: Walter Viegener, Jürgen Nägeler, Walter Bauer