Patents by Inventor Montgomery D. Grimes

Montgomery D. Grimes 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).

  • Methods for increasing absorption of microwave energy by compounds with a low dielectric constant
    Publication number: 20020006858
    Abstract: Low dielectric compounds, preferably silicon nitride precursors such as polycarbosilazanes, are mixed with a sufficient quantity of a silicon carbide additive to enhance absorption of electromagnetic energy by the mixture, thereby permitting efficient and effective curing of low dielectric compounds using electromagnetic energy.
    Type: Application
    Filed: February 2, 2001
    Publication date: January 17, 2002
    Inventors: Scott F. Timmons, Renee C. Graef, Stuart T. Schwab, Montgomery D. Grimes
  • Method for preparing silicon nitride and silicon nitride composites
    Patent number: 5980699
    Abstract: A method of producing silicon nitride ceramics and silicon nitride ceramic composites. A mixture comprising a polysilazane and an additive effective to increase coupling between the mixture and electromagnetic energy is converted to a preceramic intermediate. The preceramic intermediate is treated with electromagnetic energy and thereby converted to a silicon nitride ceramic and/or a silicon nitride ceramic composite.
    Type: Grant
    Filed: October 24, 1997
    Date of Patent: November 9, 1999
    Assignee: Southwest Research Institute
    Inventors: Scott F. Timmons, Renee C. Graef, Stuart T. Schwab, Montgomery D. Grimes