Patents by Inventor Gunter Grutzner

Gunter Grutzner 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).

  • Using a corrosion proof austenitic alloy for high load weldable components
    Patent number: 4584031
    Abstract: Corrosionproof austenitic steel is made and used by providing a particular composition and cold working and recrystallize annealling the alloy to obtain an ultrafine grain structure with average linear intercept length of grains below 10 micrometers and an increased 0.2% offset yield strength at room temperature and higher. Parts thus made are welded together using a high strength nitrogen containing corrosion resistant steel or nickel alloy as filler and the ultrafine alloy as parent metal which will not fracture in the seam transition region of the welding.
    Type: Grant
    Filed: February 22, 1985
    Date of Patent: April 22, 1986
    Assignee: Mannesmann Aktiengesellschaft
    Inventor: Gunter Grutzner