Patents by Inventor Hans Stadelmaier

Hans Stadelmaier 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).

  • Transition metal doped ferromagnetic III-V nitride material films and methods of fabricating the same
    Patent number: 6955858
    Abstract: Transition metal doped II–V nitride material films exhibit ferromagnetic properties at or above room temperature. A III–V nitride material film may be doped with a transition metal film in-situ during metal-organic chemical vapor deposition and/or by solid-state diffusion processes. Doping of the III–V nitride material films may proceed in the absence of hydrogen and/or in the presence of nitrogen. In some embodiments, transition metal-doped III–V nitride material films comprise carbon concentrations of at least 1017 atoms per cubic centimeter.
    Type: Grant
    Filed: December 6, 2002
    Date of Patent: October 18, 2005
    Assignee: North Carolina State University
    Inventors: Nadia A. ElMasry, Salah M. Bedair, Meredith L. Reed, Hans Stadelmaier
  • Transition metal doped ferromagnetic III-V nitride material films and methods of fabricating the same
    Publication number: 20030136986
    Abstract: Transition metal doped III-V nitride material films exhibit ferromagnetic properties at or above room temperature. A III-V nitride material film may be doped with a transition metal film in-situ during metal-organic chemical vapor deposition and/or by solid-state diffusion processes. Doping of the III-V nitride material films may proceed in the absence of hydrogen and/or in the presence of nitrogen. In some embodiments, transition metal-doped III-V nitride material films comprise carbon concentrations of at least 1017 atoms per cubic centimeter.
    Type: Application
    Filed: December 6, 2002
    Publication date: July 24, 2003
    Inventors: Nadia A. ElMasry, Salah M. Bedair, Meredith L. Reed, Hans Stadelmaier