Patents by Inventor Gary J. Pruett

Gary J. Pruett 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).

  • Ultra low friction carbon/carbon composites for extreme temperature applications
    Patent number: 6255234
    Abstract: A carbon/carbon composite in which a carbon matrix containing a controlled amount of boron or a boron compound is reinforced with carbon fiber exhibits a low coefficient of friction, i.e., on the order of 0.04 to 0.1 at temperatures up to 600° C., which is one of the lowest frictional coefficients for any type of carbonaceous material, including graphite, glassy carbon, diamond, diamond-like carbon and other forms of carbon material.
    Type: Grant
    Filed: December 17, 1998
    Date of Patent: July 3, 2001
    Assignees: Hitco Carbon Composites, Inc., The University of Chicago
    Inventors: Ali Erdemir, Donald E. Busch, George R. Fenske, Sam Lee, Gary Shepherd, Gary J. Pruett