Patents by Inventor Robert Shull

Robert Shull 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).

  • Doped Gd5Ge2Si2 compounds and methods for reducing hysteresis losses in Gd5Ge2Si2 compound
    Publication number: 20060144473
    Abstract: A Gd5Ge2Si2 refrigerant compound is doped or alloyed with an effective amount of silicide-forming metal element such that the magnetic hysteresis losses in the doped Gd5Ge2Si2 compound are substantially reduced in comparison to the hysteresis losses of the undoped Gd5Ge2Si2 compound. The hysteresis losses can be nearly eliminated by doping the Gd5Ge2Si2 compound with iron, cobalt, manganese, copper, or gallium. The effective refrigeration capacities of the doped Gd5Ge2Si2 compound are significantly higher than for the undoped Gd5Ge2Si2 compound.
    Type: Application
    Filed: October 27, 2005
    Publication date: July 6, 2006
    Inventors: Robert Shull, Alexander Shapiro, Virgil Provenzano