Patents by Inventor William W. Schwarz

William W. Schwarz 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).

  • Propellants and pyrotechnic compositions containing aluminum-coated ammonium perchlorate
    Patent number: 3953256
    Abstract: A method for improving the combustion efficiency, i.e. increasing the burning rate, of propellant, flare, and other pyrotechnic compositions is disclosed which comprises using at least some ammonium perchlorate oxidizer coated with aluminum metal in place of a mere mixture of aluminum and ammonium perchlorate. The resultant compositions have increased burning rate in comparison to mere mixtures of ammonium perchlorate and aluminum.
    Type: Grant
    Filed: August 22, 1973
    Date of Patent: April 27, 1976
    Assignee: Thiokol Corporation
    Inventors: William W. Schwarz, William D. Stephens