Patents Examined by Aileen B. Felton
  • Patent number: 11434181
    Abstract: A precursor formulation of an energetic composition with improved electrostatic charge dissipation, including an amorphous carbon black having a specific surface area of at least about 1,200 m2/g, in an amount from about 0.05% by weight to about 0.25% by weight. Also disclosed is a precursor formulation of a propellant composition with improved electrostatic charge dissipation. The amorphous carbon black having a specific surface area of at least about 1,200 m2/g may enhance electrostatic charge dissipation of the HTPB-based propellant composition, without affecting a breakdown voltage of the propellant composition.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: September 6, 2022
    Assignee: Northrop Grumman Systems Corporation
    Inventors: Nathan M. Seidner, Jay D. Shuler, Richard Brad Cragun
  • Patent number: 11427515
    Abstract: Emulsion explosives with gas bubbles that are resistant to in-borehole migration or coalescence are disclosed herein. Such emulsions can be sensitized by mechanically-introducing gas bubbles into the emulsion. Resistance to gas bubble migration and coalescence can be achieved by homogenization, without the need for bubble stabilization agents.
    Type: Grant
    Filed: January 25, 2019
    Date of Patent: August 30, 2022
    Assignee: Dyno Nobel Inc.
    Inventors: John B. Halander, Casey L. Nelson, Cornelis L. Kome
  • Patent number: 11414360
    Abstract: A smoke composition which is effective in the visible and infrared ranges and includes at least one oxidant and at least one reducing agent and at least one smoke agent generating carbon particles. This composition has superchlorinated polyvinyl chloride (C-PVC) as smoke agent, wherein the chlorine content of this smoke agent is between 57% and 70% of the weight of superchlorinated polyvinyl chloride, wherein the composition has 49% to 90% by weight of superchlorinated polyvinyl chloride (C-PVC) based on the total weight of the composition.
    Type: Grant
    Filed: March 27, 2017
    Date of Patent: August 16, 2022
    Assignee: NEXTER MUNITIONS
    Inventors: Peggy Lamy-Bracq, Yohan Dufour
  • Patent number: 11413486
    Abstract: The present invention relates to gas-producing materials, methods of forming gas-producing materials, and uses of gas-producing materials. The gas-producing materials comprise a comminuted foamed polymer, a nitrogen-containing fuel and an oxidiser. The gas-producing materials may be used to suppress a fire.
    Type: Grant
    Filed: August 10, 2016
    Date of Patent: August 16, 2022
    Assignee: Acell Industries Limited
    Inventors: Aldino Albertelli, Michael Frieh
  • Patent number: 11407483
    Abstract: This invention relates to a thermal hydrogen generator and a process and system for generating hydrogen gas, more specifically to a process and system for generating hydrogen gas by thermally decomposing a metal hydride.
    Type: Grant
    Filed: January 13, 2020
    Date of Patent: August 9, 2022
    Assignee: Anasphere, Inc.
    Inventor: John A. Bognar
  • Patent number: 11370384
    Abstract: Cool burning gas generant compositions for an automotive inflatable restraint system are provided that include a bismuth-containing compound selected from the group consisting of: bismuth citrate, bismuth subsalicylate, bismuth hydroxide, copper bismuth hydroxy nitrate, bismuth subcarbonate, bismuth suboxalate, and combinations thereof. The gas generant comprises at least one copper-containing component. The gas generant includes at least one oxidizer, fuel, and optional coolant. The maximum flame temperature at combustion (Tc) of less than or equal to about 1700K (1,427° C.). The cool burning gas generant composition generates liquid phase combustion products making it suitable for use in a filterless inflatable restraint system. Copper and bismuth present in the cool burning gas generant composition react to form an alloy having a melting point at or near the maximum flame temperature at combustion (Tc).
    Type: Grant
    Filed: August 29, 2019
    Date of Patent: June 28, 2022
    Assignee: Autoliv ASP, Inc.
    Inventors: Ivan V. Mendenhall, Gary K. Lund, Steven M. Cannon
  • Patent number: 11312814
    Abstract: A solid rocket propellant includes a binder that has hydroxyl-terminated polybudadiene (HTPB) with a curative that is selected from isocyanate-terminated polyether, isocyanate-terminated polysiloxane, or combinations thereof.
    Type: Grant
    Filed: September 30, 2016
    Date of Patent: April 26, 2022
    Assignee: AEROJET ROCKETDYNE, INC.
    Inventors: Daniel Doll, Scott Dawley
  • Patent number: 11286214
    Abstract: An obscurant-emitting composition may comprise an oxidizer comprising a cation comprising at least one of an alkali metal or an alkaline earth metal, and an anion comprising at least one of nitrate, chlorate, bromate, iodate, perchlorate, periodate, or chlorite; a fuel; and a hydrated salt composition, wherein the obscurant-emitting composition comprises between 0.001% and 8% by weight hydrated salt composition.
    Type: Grant
    Filed: November 19, 2019
    Date of Patent: March 29, 2022
    Assignee: Goodrich Corporation
    Inventors: Karl G. Reimer, Jean C. Rodriguez
  • Patent number: 11254623
    Abstract: An explosive sheet simulant that uses an ethylene vinyl acetate polymer combined with a mixture of a boron carbide and iron oxide for X-ray attenuating properties, and components of the mixture selected for predetermined flexural modulus combined with particle density, effective atomic number, X-ray transmission properties, or millimeter wave properties.
    Type: Grant
    Filed: March 5, 2021
    Date of Patent: February 22, 2022
    Assignee: The Government of the United States of America, as represented by the Secretary of Homeland Security
    Inventors: Michael Brogden, Steve Duffy
  • Patent number: 11230509
    Abstract: An energetic material composite comprising fuel particles and a hydrated compound is disclosed. The energetic material composite is formed by dispersing fuel particles, which have a negative standard reduction potential relative to a standard hydrogen electrode, in a solvent containing dissolved hydrate, followed by a removal of solvent. When initiated, the fuel particles react with the water bound in the hydrated compound to release energy and hydrogen gas.
    Type: Grant
    Filed: March 2, 2017
    Date of Patent: January 25, 2022
    Assignee: NCC NANO, LLC
    Inventors: Kurt A. Schroder, Ronald Ian Dass
  • Patent number: 11203555
    Abstract: The present invention provides a method of stabilizing a nitrate-based explosive through the use of a NOx scavenger. The present invention further provides a blasting agent including ammonium nitrate and a NOx scavenger. The present invention further provides for a method of blasting adapted for use in reactive and/or elevated temperature ground.
    Type: Grant
    Filed: September 1, 2016
    Date of Patent: December 21, 2021
    Inventors: James Kenneth Beattie, Alex Masato Djerdjev, Brian Stanley Hawkett, Chiara Neto, Pramith Priyananda
  • Patent number: 11198656
    Abstract: The present application generally relates to hypergolic hydrocarbon fuel compositions comprising a convenient fuel and a cycloheptatriene and/or its analogs, and methods of making and using the hypergolic hydrocarbon fuel compositions.
    Type: Grant
    Filed: March 14, 2018
    Date of Patent: December 14, 2021
    Assignee: Purdue Research Foundation
    Inventors: Timothee L Pourpoint, Trenton H Parsell
  • Patent number: 11192831
    Abstract: A precursor formulation comprising, before curing, a hydroxyl-terminated polybutadiene (HTPB) prepolymer or a hydroxyl-terminated polyether (HTPE) prepolymer, an oxidizer, a dimer fatty diol, and an isocyanate curative. A solid propellant comprising a reaction product of the HTPB prepolymer or HTPE prepolymer, the dimer fatty diol, and the isocyanate curative is also disclosed, as is a rocket motor comprising a case and a solid propellant in the case, the solid propellant comprising the reaction product and an oxidizer. A method of reducing a burn rate of a solid propellant is also disclosed.
    Type: Grant
    Filed: July 13, 2017
    Date of Patent: December 7, 2021
    Assignee: Northrop Grumman Systems Corporation
    Inventors: Robert S. Larson, Royce Beal
  • Patent number: 11186528
    Abstract: The invention relates to a cast explosive composition. There is provided a precure castable explosive composition comprising an explosive material, a polymerisable binder, said cross linking reagent comprising at least two reactive groups each of which is protected by a labile blocking group.
    Type: Grant
    Filed: July 6, 2016
    Date of Patent: November 30, 2021
    Assignee: BAE SYSTEMS PLC
    Inventors: Rebecca Elizabeth Stephens, Richard Stephen Arthur, Wayne Cord Hayes, Michael Edward Budd
  • Patent number: 11161795
    Abstract: The present invention provides a method for the preparation of an insensitive high enthalpy explosive Dihydroxylammonium 5,5?-bistetrazole-1,1?-diolate (TKX-50) in the presence of N,N-dimethylformamide, N,N-dimethylacetamide, or N-Methyl-2-pyrrolidone as a solvent via a four-step, one-pot reaction route to obtain a final product after four reaction steps. The more dangerous intermediate diazidoglyoxime may be solved by the one-pot method without the need of isolation. Further, the cyclization reaction is carried out in the presence of dropwisely added concentrated sulfuric acid to replace hydrochloric gas so no hydrochloric gas generator is needed to greatly reduce the amount of waste acid so as to effectively reduce the cost by avoiding using hydrochloric gas steel cylinders which require much safety equipment.
    Type: Grant
    Filed: November 21, 2018
    Date of Patent: November 2, 2021
    Assignee: National Chung-Shan Institute of Science and Technology
    Inventors: Chan-Yuan Ho, Tsair-Feng Lin, Yan-Lin Wang
  • Patent number: 11131530
    Abstract: An opto-thermal laser detonator uses resonantly absorptive tuned nano-material associated with secondary explosives for optical absorption and initiation by an integral laser diode. The opto-thermal laser detonator includes main explosive material; resonantly absorptive tuned nano-material; secondary explosive material, wherein the resonantly absorptive tuned nano-material and the secondary explosive material are associated to form associated material made of the resonantly absorptive tuned nano-material and the secondary explosive material; and a laser diode operatively connected to the associated material, wherein the laser diode initiates the associated material which in turn initiates the main explosive material.
    Type: Grant
    Filed: January 29, 2018
    Date of Patent: September 28, 2021
    Assignee: Lawrence Livermore National Security, LLC
    Inventor: Paul R. Wilkins
  • Patent number: 11124464
    Abstract: A high density, generally recognized as safe hybrid rocket motor is described which has a density-specific impulse similar to a solid rocket motor, with good performance approaching or equal to a liquid rocket motor. These high density hybrid motors resolve the packaging efficiency/effectiveness problems limiting the application of safe, low cost hybrid motor technology.
    Type: Grant
    Filed: August 30, 2017
    Date of Patent: September 21, 2021
    Assignee: Terves, LLC
    Inventors: Andrew J. Sherman, Brian Werry, Andrew Cortopassi, Eric Boyer
  • Patent number: 11124413
    Abstract: The present invention relates generally in gaseous oxygen propulsion systems with solid-phase chemical oxygen generation for in-space propulsion systems. Chemical oxygen generation is provided by alkali metal chlorates, alkali metal perchlorates or metal peroxides.
    Type: Grant
    Filed: January 12, 2018
    Date of Patent: September 21, 2021
    Assignee: SOUTHWEST RESEARCH INSTITUTE
    Inventors: Shane Bucy Coogan, Michael A. Miller
  • Patent number: 11125545
    Abstract: The present invention is a pyrotechnic time delay system that is improved over prior-art designs. Specifically, the system described herein comprises at least one delay element. The delay element or delay dements each have an input charge, a delay composition, and an output charge. Both the input charge and the output charge are igniter compositions and are comprised of the same components despite having different functional goals. The input charge and output charge compositions preferably contain titanium, manganese dioxide, and polytetrafluoroethylene. The delay composition may be modified from current formulations to include manganese and manganese dioxide, or tungsten and manganese dioxide. The system disclosed herein may be comprised of one delay element, or it may be modular wherein multiple delay elements are connected in series.
    Type: Grant
    Filed: February 8, 2018
    Date of Patent: September 21, 2021
    Assignee: U.S. Government as Represented by the Secretary of the Army
    Inventors: Anthony P. Shaw, Jay C. Poret, Lori J. Groven, Joshua Koenig, Jason Brusnahan
  • Patent number: 11104620
    Abstract: A method for manufacturing nano-sized insensitive high explosive molding powder usable as a booster HE is provided herein. The method preferably involving the steps of dissolving a binder in a liquid and suspending crystalline high explosive to said liquid, grinding that suspension in a bead mill until the crystalline high explosive is nano-sized, and precipitating the binder and crystalline high explosive using a spray dryer to produce granules containing nano-sized crystalline high explosive. The liquid may be water or an organic solvent so long as the binder is highly soluble in the liquid and the crystalline high explosive is generally insoluble in the liquid. A fatty alcohol, water defoaming/dispersant/surfactant agent can be added to the dissolved binder/suspended crystalline high explosive, to aid in the manufacturability.
    Type: Grant
    Filed: May 10, 2017
    Date of Patent: August 31, 2021
    Assignee: The United States of America as Represented by the Secretary of the Army
    Inventors: Rajen Patel, Victor Stepanov, Ashok Surapaneni, Anthony DiStasio, Hongwei Qiu