Patents by Inventor Friedhelm Trosken

Friedhelm Trosken 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 for the arc welding of nitrogen alloyed steels
    Patent number: 4751366
    Abstract: Process for arc fusion welding under atmospheric conditions of a base material which is a nitrogen alloyed steel, in which the bulk share of nitrogen in the steel is above its solubility limit under atmospheric conditions. The nitrogen released during the melting of the base material is confined to the melting bath formed during the welding.
    Type: Grant
    Filed: May 12, 1986
    Date of Patent: June 14, 1988
    Assignee: Fried Krupp GmbH
    Inventors: Friedhelm Trosken, Reinhard Muller