Patents by Inventor Jon G. Bragg

Jon G. Bragg 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).

  • Continuous manufacture of DBX-1
    Patent number: 11312729
    Abstract: The present invention is directed to a process for continuous production of copper (I) nitrotetrazolate (DBX-1) by reacting aqueous copper salt with aqueous 5-nitrotetrazolate salt in the presence of a reducing agent. All the reactants are introduced into a continuous flow reactor system, which is composed of a temperature controlled tubular reactor and a mixer that allows for radial mixing. An optional stirred tank reactor may also be incorporated into the process to complete the reaction and allow for crystal growth.
    Type: Grant
    Filed: October 17, 2019
    Date of Patent: April 26, 2022
    Assignee: The United States of America as Represented by the Secretary of the Army
    Inventors: Neha Mehta, Jon G. Bragg, Matthew L. Jorgensen, Andrew G. Pearsall, Jerry S. Salan, Daniel W. Ward
  • 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
  • Method for preparation of silver azide
    Patent number: 9969623
    Abstract: Described are methods of preparing silver azide comprising reacting a silver salt, an azide salt, ammonium hydroxide, and a hydrolysable ester at an elevated temperature.
    Type: Grant
    Filed: May 12, 2015
    Date of Patent: May 15, 2018
    Assignee: Pacific Scientific Energetic Materials Company
    Inventors: John W. Fronabarger, Jon G. Bragg, Michael D. Williams
  • 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 5-nitrotetrazolates using a flow system
    Patent number: 9670168
    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 elevated temperature.
    Type: Grant
    Filed: January 22, 2014
    Date of Patent: June 6, 2017
    Assignee: Pacific Scientific Energetic Materials Company
    Inventors: Jon G. Bragg, John W. Fronabarger, Michael D. Williams
  • Facile method for preparation of 5-nitrotetrazolates using a batch system
    Patent number: 9598380
    Abstract: Described are methods for preparing salts of 5-nitrotetrazolate by reacting 5-aminotetrazole, an acid, and sodium nitrite in water in a batch reaction at an elevated temperature. As examples, the acid is nitric acid, sulfuric acid, perchloric acid, or hydrochloric acid, and the elevated temperature is at or above 65° C.
    Type: Grant
    Filed: June 5, 2015
    Date of Patent: March 21, 2017
    Assignees: SRI International, Pacific Scientific Energetic Materials Company, LLC
    Inventors: Jeffrey C. Bottaro, Mark A. Petrie, Jon G. Bragg, 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
  • FACILE METHOD FOR PREPARATION OF 5-NITROTETRAZOLATES USING A BATCH SYSTEM
    Publication number: 20150361057
    Abstract: Described are methods for preparing salts of 5-nitrotetrazolate by reacting 5-aminotetrazole, an acid, and sodium nitrite in water in a batch reaction at an elevated temperature. As examples, the acid is nitric acid, sulfuric acid, perchloric acid, or hydrochloric acid, and the elevated temperature is at or above 65° C.
    Type: Application
    Filed: June 5, 2015
    Publication date: December 17, 2015
    Inventors: Jeffrey C. Bottaro, Mark A. Petrie, Jon G. Bragg, John W. Fronabarger, Michael D. Williams
  • METHOD FOR PREPARATION OF SILVER AZIDE
    Publication number: 20150321922
    Abstract: Described are methods of preparing silver azide comprising reacting a silver salt, an azide salt, ammonium hydroxide, and a hydrolysable ester at an elevated temperature.
    Type: Application
    Filed: May 12, 2015
    Publication date: November 12, 2015
    Inventors: John W. Fronabarger, Jon G. Bragg, Michael D. Williams