Patents by Inventor Lanny Ritz

Lanny Ritz 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).

  • Boron carbide based ceramic matrix composites
    Patent number: 7378362
    Abstract: The present invention is a composite material, a process and a product formed by the process. The composite is formed by a process that includes forming a fibrous structure comprising fibers into a preform, coating the fibers of the fibrous structure preform with elemental carbon to impregnate that preform, infiltrating the preform with boron carbide to form an impregnated green body. The impregnated green body is infiltrated with liquid naphthalene or other carbon precursor, which is thereafter pyrolyzed to form a carbon char. Then, the char infiltrated green body is infiltrated with molten silicon to form a continuous matrix throughout the composite. The silicon in the continuous matrix is reacted with the carbon char to form silicon carbide.
    Type: Grant
    Filed: October 24, 2003
    Date of Patent: May 27, 2008
    Assignee: Goodrich Corporation
    Inventors: Thomas Dwayne Nixon, Sai-Kwing Lau, Edward R. Stover, Salvatore J. Calandra, Vijay V. Pujar, Lanny Ritz, Gary L. Clark, Steve T. Keller
  • Boron carbide based ceramic matrix composites
    Publication number: 20040192534
    Abstract: The present invention is a composite material, a process and a product formed by the process. The composite is formed by a process that includes forming a fibrous structure comprising fibers into a preform, coating the fibers of the fibrous structure preform with elemental carbon to impregnate that preform, infiltrating the preform with boron carbide to form an impregnated green body. The impregnated green body is infiltrated with liquid naphthalene or other carbon precursor, which is thereafter pyrolyzed to form a carbon char. Then, the char infiltrated green body is infiltrated with molten silicon to form a continuous matrix throughout the composite. The silicon in the continuous matrix is reacted with the carbon char to form silicon carbide.
    Type: Application
    Filed: October 24, 2003
    Publication date: September 30, 2004
    Inventors: Thomas Dwayne Nixon, Sai-Kwing Lau, Edward R. Stover, Salvatore J. Calandra, Vijay V. Pujar, Lanny Ritz, Gary L. Clark, Steve T. Keller