Patents by Inventor David Shelleman

David Shelleman 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).

  • Electrically conductive fibers of Ti4O7 and Ti5O9
    Publication number: 20050029715
    Abstract: Solid, shaped and fired fibers of Ti4O7 and Ti5O9 are made by firing TiO2 fibers in a reducing atmosphere. In a first aspect, the TiO2 fibers are made by extruding into air a viscous TiO2 gel and heat treating the resulting green fibers to remove solvent, decompose and to volatilize undesired constituents to form electrically conductive, refractory fibers of Ti4O7 and Ti5O9. In a second aspect, solid, shaped and fired fibers of Ti4O7 and Ti5O9 are made by firing extruded fibers from mixtures of TiO2.
    Type: Application
    Filed: January 9, 2004
    Publication date: February 10, 2005
    Applicant: Advanced Power Devices
    Inventors: Richard Tressler, James Adair, David Shelleman, Julie Anderson