Patents by Inventor Paul Claus Gerdes

Paul Claus Gerdes 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).

  • Welding additive material
    Patent number: 8007715
    Abstract: A steel has the following chemical composition (amounts in % by weight): 0.05-0.14 C, 8-13 Cr, 1-2.6 Ni, 0.5-1.9 Mo, 0.5-1.5 Mn, 0.15-0.5 Si, 0.2-0.4 V, 0-0.04 B, 2.1-4.0 Re, 0-0.07 Ta, 0-60 ppm Pd, remainder Fe and unavoidable impurities. The steel can be used effectively as a welding additive material and has outstanding properties at very high temperatures, in particular a good creep rupture strength/resistance and a good oxidation resistance.
    Type: Grant
    Filed: February 12, 2010
    Date of Patent: August 30, 2011
    Assignee: ALSTOM Technology Ltd.
    Inventors: Mohamed Nazmy, Paul Claus Gerdes, Andreas Kuenzler
  • WELDING ADDITIVE MATERIAL
    Publication number: 20100206937
    Abstract: A steel has the following chemical composition (amounts in % by weight): 0.05-0.14 C, 8-13 Cr, 1-2.6 Ni, 0.5-1.9 Mo, 0.5-1.5 Mn, 0.15-0.5 Si, 0.2-0.4 V, 0-0.04 B, 2.1-4.0 Re, 0-0.07 Ta, 0-60 ppm Pd, remainder Fe and unavoidable impurities. The steel can be used effectively as a welding additive material and has outstanding properties at very high temperatures, in particular a good creep rupture strength/resistance and a good oxidation resistance.
    Type: Application
    Filed: February 12, 2010
    Publication date: August 19, 2010
    Inventors: Mohamed Nazmy, Paul Claus Gerdes, Andreas Kuenzler