Patents by Inventor Joseph H. Koo

Joseph H. Koo 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).

  • Rocket motor insulation
    Patent number: 7820285
    Abstract: Provided is a solid rocket motor (SRM) insulation, wherein carbon nano fibers (CNF) are blended into a polyurethane matrix so as to disperse the CNF in the polymer. The so blended material is then extruded, injection molded or sprayed on or into the desired shape. Such SRM insulation has reduced ablation over prior art insulations, resulting in reduction in weight of the insulation needed in such rockets, permitting increase of payload therein.
    Type: Grant
    Filed: February 10, 2006
    Date of Patent: October 26, 2010
    Assignee: The United States of America as represented by the Secretary of the Air Force
    Inventors: Charles U. Pittman, Jr., Rusty L. Blanski, Joseph H. Koo, Patrick N. Ruth, Shawn H. Phillips
  • Fire retardant polymer nanocomposites for laser sintering
    Publication number: 20070290410
    Abstract: A method and apparatus for forming three dimensional flame retardant objects by laser sintering that includes homogeneously combining, by an extrusion process, certain polymer materials with nanoparticles and using the resultant powder in a laser sintering device to produce freeform parts.
    Type: Application
    Filed: July 29, 2005
    Publication date: December 20, 2007
    Inventors: Joseph H. Koo, Louis A. Pilato, Gerhardt E. Wissler