Patents by Inventor Gerard Ludtka

Gerard Ludtka 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).

  • Patent number: 7534980
    Abstract: Methods and apparatus are described for high magnetic field ohmically decoupled non-contact treatment of conductive materials in a high magnetic field. A method includes applying a high magnetic field to at least a portion of a conductive material; and applying an inductive magnetic field to at least a fraction of the conductive material to induce a surface current within the fraction of the conductive material, the surface current generating a substantially bi-directional force that defines a vibration. The high magnetic field and the inductive magnetic field are substantially confocal, the fraction of the conductive material is located within the portion of the conductive material and ohmic heating from the surface current is ohmically decoupled from the vibration.
    Type: Grant
    Filed: March 30, 2006
    Date of Patent: May 19, 2009
    Assignee: UT-Battelle, LLC
    Inventors: John Wilgen, Roger Kisner, Gerard Ludtka, Gail Ludtka, Roger Jaramillo
  • Publication number: 20070266825
    Abstract: A system and method for high volume production of nanoparticles, nanotubes, and items incorporating nanoparticles and nanotubes. Microwave, radio frequency, or infrared energy vaporizes a metal catalyst which, as it condenses, is contacted by carbon or other elements such as silicon, germanium, or boron to form agglomerates. The agglomerates may be annealed to accelerate the production of nanotubes. Magnetic or electric fields may be used to align the nanotubes during their production. The nanotubes may be separated from the production byproducts in aligned or non-aligned configurations. The agglomerates may be formed directly into tools, optionally in compositions that incorporate other materials such as abrasives, binders, carbon-carbon composites, and cermets.
    Type: Application
    Filed: May 2, 2006
    Publication date: November 22, 2007
    Inventors: Edward Ripley, Jonathan Morrell, Roland Seals, Gerard Ludtka
  • Publication number: 20070235445
    Abstract: Methods and apparatus are described for high magnetic field ohmically decoupled non-contact treatment of conductive materials in a high magnetic field. A method includes applying a high magnetic field to at least a portion of a conductive material; and applying an inductive magnetic field to at least a fraction of the conductive material to induce a surface current within the fraction of the conductive material, the surface current generating a substantially bi-directional force that defines a vibration. The high magnetic field and the inductive magnetic field are substantially confocal, the fraction of the conductive material is located within the portion of the conductive material and ohmic heating from the surface current is ohmically decoupled from the vibration.
    Type: Application
    Filed: March 30, 2006
    Publication date: October 11, 2007
    Inventors: John Wilgen, Roger Kisner, Gerard Ludtka, Gail Ludtka, Roger Jaramillo
  • Publication number: 20060289491
    Abstract: An apparatus and method for altering characteristics, such as can include structural, magnetic, electrical, optical or acoustical characteristics, of an electrically-conductive workpiece utilizes a magnetic field within which the workpiece is positionable and schemes for thermally treating the workpiece by heating or cooling techniques in conjunction with the generated magnetic field so that the characteristics of the workpiece are effected by both the generated magnetic field and the thermal treatment of the workpiece.
    Type: Application
    Filed: July 3, 2006
    Publication date: December 28, 2006
    Inventors: Roger Kisner, John Wilgen, Gerard Ludtka, Roger Jaramillo, Gail Mackiewicz-Ludtka
  • Publication number: 20060231549
    Abstract: An apparatus and method for altering characteristics, such as can include structural, magnetic, electrical, optical or acoustical characteristics, of an electrically-conductive workpiece utilizes a magnetic field within which the workpiece is positionable and schemes for thermally treating the workpiece by heating or cooling techniques in conjunction with the generated magnetic field so that the characteristics of the workpiece are effected by both the generated magnetic field and the thermal treatment of the workpiece.
    Type: Application
    Filed: April 19, 2005
    Publication date: October 19, 2006
    Inventors: Roger Kisner, John Wilgen, Gerard Ludtka, Roger Jaramillo, Gail Mackiewicz-Ludtka