Patents by Inventor Robert Holderman

Robert Holderman 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).

  • Non-conductive pyrotechnic mixture
    Patent number: 11878951
    Abstract: Described are energetic compositions formed of a 5,5?-bistetrazole salt and a perchlorate salt, in which the energetic composition is a co-precipitated product. The 5,5?-bistetrazole salt and the perchlorate salt can be dipotassium 5,5?-bistetrazole and potassium perchlorate. The energetic composition can have a particle size distribution between 1-50 micron and/or a mean volume diameter of less than 30 micron. In a low energy electro-explosive device, an ignition element is at least partially surrounded by an acceptor formed of this energetic composition, and the ignition element can be a bridgewire, a thin film bridge, a semiconductor bridge, or a reactive semiconductor bridge.
    Type: Grant
    Filed: January 16, 2019
    Date of Patent: January 23, 2024
    Assignee: PACIFIC SCIENTIFIC ENERGETIC MATERIALS COMPANY
    Inventors: John W. Fronabarger, Jason B. Pattison, Robert Holderman
  • Non-Conductive Pyrotechnic Mixture
    Publication number: 20200223766
    Abstract: Described are energetic compositions formed of a 5,5?-bistetrazole salt and a perchlorate salt, in which the energetic composition is a co-precipitated product. The 5,5?-bistetrazole salt and the perchlorate salt can be dipotassium 5,5?-bistetrazole and potassium perchlorate. The energetic composition can have a particle size distribution between 1-50 micron and/or a mean volume diameter of less than 30 micron. In a low energy electro-explosive device, an ignition element is at least partially surrounded by an acceptor formed of this energetic composition, and the ignition element can be a bridgewire, a thin film bridge, a semiconductor bridge, or a reactive semiconductor bridge.
    Type: Application
    Filed: January 16, 2019
    Publication date: July 16, 2020
    Inventors: John W. Fronabarger, Jason B. Pattison, Robert Holderman