Patents by Inventor Rainer Rueffert

Rainer Rueffert 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).

  • USE OF AN IRON-CHROMIUM-ALUMINUM ALLOY WITH LONG SERVICE LIFE AND MINOR CHANGES IN HEAT RESISTANCE
    Publication number: 20100092749
    Abstract: Use of an iron-chromium-aluminum alloy with long service life and minor changes in heat resistance as a foil for heating elements, the foil having a thickness ranging from 0.020 to 0.300 ?m. The alloy contains (in percentages by weight) 4.5-6.5% Al and 16-24% Cr, to which are added 0.05-0.7% Si, 0.001-0.5% Mn, 0.02-0.1% Y, 0.02-0.1% Zr, 0.02-0.1% Hf, 0.003-0.020% C, maximum 0.03% N, maximum 0.01% S and maximum 0.5% Cu, the remainder being iron and the usual impurities resulting from the melting process.
    Type: Application
    Filed: January 15, 2008
    Publication date: April 15, 2010
    Applicant: THYSSENKRUPP VDM GMBH
    Inventors: Heike Hattendorf, Janine Lindemann, Rainer Rueffert