Patents by Inventor Harald HELMER

Harald HELMER 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).

  • Creep-resistant, rhenium-free nickel base superalloy
    Patent number: 9580774
    Abstract: Disclosed is a nickel base alloy which is substantially free of rhenium and has a solidus temperature of more than 1320° C. Precipitates of a ??-phase are present in a ?-matrix with a fraction of 40 to 50 vol % at 1050° C. to 1100° C., and a ?/?? mismatch at 1050° C. to 1100° C. is from ?0.15% to ?0.25%. The alloy comprises 11 to 13 at % aluminum, 4 to 14 at % cobalt, 6 to 12 at % chromium, 0.1 to 2 at % molybdenum, 0.1 to 3.5 at % tantalum, 0.1 to 3.5 at % titanium, 0.1 to 3 at % tungsten. The tungsten content of the ?-matrix is greater than that in the precipitated ??-phases.
    Type: Grant
    Filed: October 23, 2013
    Date of Patent: February 28, 2017
    Assignee: MTU AERO ENGINES AG
    Inventors: Ralf Rettig, Robert F. Singer, Harald Helmer, Steffen Neumeier
  • CREEP-RESISTANT, RHENIUM-FREE NICKEL BASE SUPERALLOY
    Publication number: 20140119941
    Abstract: Disclosed is a nickel base alloy which is substantially free of rhenium and has a solidus temperature of more than 1320° C. Precipitates of a ??-phase are present in a ?-matrix with a fraction of 40 to 50 vol % at 1050° C. to 1100° C., and a ?/?? mismatch at 1050° C. to 1100° C. is from ?0.15% to ?0.25%. The alloy comprises 11 to 13 at % aluminum, 4 to 14 at % cobalt, 6 to 12 at % chromium, 0.1 to 2 at % molybdenum, 0.1 to 3.5 at % tantalum, 0.1 to 3.5 at % titanium, 0.1 to 3 at % tungsten. The tungsten content of the ?-matrix is greater than that in the precipitated ??-phases.
    Type: Application
    Filed: October 23, 2013
    Publication date: May 1, 2014
    Applicant: MTU AERO ENGINES AG
    Inventors: Ralf RETTIG, Robert F. SINGER, Harald HELMER, Steffen NEUMEIER