Patents by Inventor Jason B. Pattison

Jason B. Pattison 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
  • Method for preparing sodium nitrotetrazolate using cation exchange resin
    Patent number: 10947204
    Abstract: The present invention is directed to a method for preparing 5-nitrotetrazolate using a strongly acidic ionic cation exchange resin that has improve yields over prior art methods. The methods disclosed herein can be used either in a batch process or continuous flow reactor. In one exemplary process, starting material sodium 5-aminotetrazolate in solution is added into a reaction vessel containing a strongly acidic ionic cation exchange resin to facilitate production of 5-nitrotetrazolate. Multiple reactors containing resins may be connected in series to improve 5-nitrotetrazolate yields and purity levels.
    Type: Grant
    Filed: October 17, 2019
    Date of Patent: March 16, 2021
    Assignee: U.S. Government as Represented by the Secretary of the Army
    Inventors: R. Hunter Muir, Andrew G. Pearsall, Jerry S. Salan, Matthew L. Jorgensen, Jon G. Bragg, Neha Mehta, John W. Fronabarger, Jason B. Pattison, Lily F. W. Walsh
  • 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
  • Purification of flow sodium 5-nitrotetrazolate solutions with copper modified cation exchange resin
    Patent number: 10464908
    Abstract: Described are methods for purifying a 5-nitrotetrazolate solution with a copper(II) modified cation exchange resin. The method can be performed as a stand-alone system or as a system integrated into a continuous flow reactor.
    Type: Grant
    Filed: September 7, 2017
    Date of Patent: November 5, 2019
    Assignee: Pacific Scientific Energetic Materials Company
    Inventors: John W. Fronabarger, Jason B. Pattison, Lily F. W. Walsh
  • Purification of Flow Sodium 5- Nitrotetrazolate Solutions with Copper Modified Cation Exchange Resin
    Publication number: 20180111909
    Abstract: Described are methods for purifying a 5-nitrotetrazolate solution with a copper(II) modified cation exchange resin. The method can be performed as a stand-alone system or as a system integrated into a continuous flow reactor.
    Type: Application
    Filed: September 7, 2017
    Publication date: April 26, 2018
    Inventors: John W. Fronabarger, Jason B. Pattison, Lily F.W. Walsh
  • Facile method for preparation of sodium 5-nitrotetrazolate using a flow system
    Patent number: 9718791
    Abstract: Described are methods for preparing salts of 5-nitrotetrazolate that include reacting aqueous solutions of 5-aminotetrazole, an acid, and sodium nitrite in a continuous flow system at an ambient temperature.
    Type: Grant
    Filed: January 19, 2016
    Date of Patent: August 1, 2017
    Assignee: Pacific Scientific Energetic Materials Company
    Inventors: Jon G. Bragg, Jason B. Pattison, John W. Fronabarger, Michael D. Williams
  • FACILE METHOD FOR PREPARATION OF SODIUM 5-NITROTETRAZOLATE USING A FLOW SYSTEM
    Publication number: 20160207892
    Abstract: Described are methods for preparing salts of 5-nitrotetrazolate that include reacting aqueous solutions of 5-aminotetrazole, an acid, and sodium nitrite in a continuous flow system at an ambient temperature.
    Type: Application
    Filed: January 19, 2016
    Publication date: July 21, 2016
    Applicant: Pacific Scientific Energetic Materials Company
    Inventors: Jon G. Bragg, Jason B. Pattison, John W. Fronabarger, Michael D. Williams