Patents Examined by Aileen Felton
  • Patent number: 8328967
    Abstract: Sol-gel chemistry is used to prepare igniters comprising energetic multilayer structures coated with energetic materials. These igniters can be tailored to be stable to environmental aging, i.e., where the igniters are exposed to extremes of both hot and cold temperatures (?30 C to 150 C) and both low (0%) and high relative humidity (100%).
    Type: Grant
    Filed: May 3, 2011
    Date of Patent: December 11, 2012
    Assignee: Lawrence Livermore National Security, LLC
    Inventors: Troy W. Barbee, Jr., Randall L. Simpson, Alexander E. Gash, Joe H. Satcher, Jr.
  • Patent number: 8002918
    Abstract: The present invention relates to a gas generating composition including a fuel, an oxidizing agent, a binder and an additive, the additive being one or two or more selected from complex basic carbonates represented by Formula (I) or (II) below; M1+M23+CO3(OH)2??(I) M32+M42+CO3(OH)2??(II) (In Formula (I), M1+ stands for H+, Li+, Na+, K+, or NH4+; M23+ stands for Al3+, Fe3+, Cr3+, Co3+, In3+, Bi3+, Sb3+, B3+, Sc3+, or Ga3+; in Formula (II), M32+ and M42+ are mutually different, each standing for Cu2+, Zn2+, Co2+, Ni2+, Mg2+, Mn2+, Fe2+, or Be2+).
    Type: Grant
    Filed: August 24, 2007
    Date of Patent: August 23, 2011
    Assignee: Daicel Chemical Industries, Ltd.
    Inventor: Nobuyuki Ohji
  • Patent number: 8002916
    Abstract: An energetic material suitable for high-energy, plastic-bonded, explosive charges, the material including an energetic plasticizer containing an energetic nitrobutyl formal, wherein a composition of the energetic plasticizer contains at least 50%, by weight, of the energetic nitrobutyl formal.
    Type: Grant
    Filed: August 17, 2005
    Date of Patent: August 23, 2011
    Assignee: Rafael Advanced Defense Systems Ltd.
    Inventors: Amir Weitz, Hagit Shulman, Orly Dekel, Rachel Steiner
  • Patent number: 8002915
    Abstract: A novel compound, used for example, as a gas generating fuel, is defined as a compound having the structural formula of wherein: R4 is a triazine ring; R1 is selected from the group consisting of a tetrazolyl group, CH3, OCH3, —CN, —C2H, NCO, —NHNH2, NO, NO2, OH, Cl, —NHCONH2, —OCOR, NHNO2, substituted tetrazoles, and substituted triazoles; R2 is selected from the group consisting of a tetrazolyl group, CH3, OCH3, —CN, —C2H, NCO, —NHNH2, NO, NO2, OH, Cl, —NHCONH2, —OCOR, NHNO2, substituted tetrazoles, and substituted triazoles; R3 is selected from the group consisting of a tetrazolyl group, CH3, OCH3, —CN, —C2H, NCO, —NHNH2, NO, NO2, OH, Cl, —NHCONH2, —OCOR, NHNO2, substituted tetrazoles, and substituted triazoles.
    Type: Grant
    Filed: October 1, 2007
    Date of Patent: August 23, 2011
    Assignee: TK Holdings, Inc.
    Inventors: Sudhakar R. Ganta, Cory G. Miller, Graylon K. Williams
  • Patent number: 7985308
    Abstract: A multimodal explosive, in particular for blast charges, which has, for increasing the power, a powder additive which is formed by a hydrogen-terminated monocrystalline silicon powder of at least one grain size range, which powder has the advantage that no oxidation phenomenon takes place even over many years—even at storage in ambient air. Due to the non-oxidized crystal surfaces, advantageously an immediate joint reaction with the explosive takes place in the detonation front and also extends into the post-reaction period with increasing crystal sizes, so that a different propellant effect is achieved depending on the additive.
    Type: Grant
    Filed: August 30, 2007
    Date of Patent: July 26, 2011
    Assignee: Diehl BGT Defence GmbH & Co., KG
    Inventors: Karl Rudolf, Heinz Hofmann, Dimitri Kovalev, Joachim Diener
  • Patent number: 7972454
    Abstract: A method of preparing a gassed water-in-oil emulsion explosives composition from a gasser solution of an inorganic nitrate, an ammonium species and an optional accelerator which is added to an emulsion explosive composition, reacts and forms gas bubbles is disclosed. The emulsion explosive composition is composed of a discontinuous aqueous phase, a continuous water immiscible organic phase, and an emulsifier. The reaction between the gasser solution and the emulsion explosive composition is such that the emulsifier does not undergo chemical attack.
    Type: Grant
    Filed: August 27, 2001
    Date of Patent: July 5, 2011
    Assignee: Orica Australia Pty Ltd.
    Inventors: Helen O'Hara, David Stow, David Edwin Yates
  • Patent number: 7964045
    Abstract: High explosive coatings and inks suitable for use in micro-electronic initiators for micro-electro-mechanical mechanisms used as safe and arm devices, are prepared from coating compositions of crystalline energetic materials and applied using various methods. These methods include wiping and spraying, as well as, pressure applications using a syringe or the like, and application of thick film ink to write specified patterns on a selected surface. A volatile mobile phase may be added to the coating composition to partially dissolve the energetic material so that, upon evaporation of the mobile phase, the energetic material precipitates and adheres to the selected surface.
    Type: Grant
    Filed: May 15, 2009
    Date of Patent: June 21, 2011
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventors: Daniel Stec, III, Gartung Cheng, Brian E. Fuchs, Neha Mehta
  • Patent number: 7951247
    Abstract: Sol-gel chemistry is used to prepare igniters comprising energetic multilayer structures coated with energetic booster materials. These igniters can be tailored to be stable to environmental aging, i.e., where the igniters are exposed to extremes of both hot and cold temperatures (?30 C to 150 C) and both low (0%) and high relative humidity (100%).
    Type: Grant
    Filed: September 30, 2002
    Date of Patent: May 31, 2011
    Assignee: Lawrence Livermore National Security, LLC
    Inventors: Troy W. Barbee, Jr., Randall L. Simpson, Alexander E. Gash, Joe H. Satcher, Jr.
  • Patent number: 7896990
    Abstract: Nanotubular structures of high energy materials are used in high energy compositions, such as propellants.
    Type: Grant
    Filed: November 2, 2005
    Date of Patent: March 1, 2011
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: James J. Baker, John R. Luense, Randall J. Cramer
  • Patent number: 7896987
    Abstract: The present invention is a bi-propellant system comprising a gelled liquid propane (GLP) fuel and a gelled MON-30 (70% N2O4+30% NO) oxidizer. The bi-propellant system is particularly well-suited for outer planet missions greater than 3 AU from the sun and also functions in earth and near earth environments. Additives such as powders of boron, carbon, lithium, and/or aluminum can be added to the fuel component to improve performance or enhance hypergolicity. The gelling agent can be silicon dioxide, clay, carbon, or organic or inorganic polymers. The bi-propellant system may be, but need not be, hypergolic.
    Type: Grant
    Filed: December 2, 2005
    Date of Patent: March 1, 2011
    Assignee: CFD Research Corporation
    Inventor: Roberto Di Salvo
  • Patent number: 7887651
    Abstract: The present invention relates to a semi-continuous method for obtaining a composite explosive charge comprising a solid polyurethane matrix loaded with a charge, the charge being in powder form and comprising at least one nitro-organic explosive.
    Type: Grant
    Filed: November 17, 2006
    Date of Patent: February 15, 2011
    Assignee: Eurenco
    Inventor: Bernard Mahe
  • Patent number: 7862668
    Abstract: A gun propellant formulation comprising: a nitrocellulose component comprising from about sixty-five percent (65.0%) to about ninety-five (95.0%) of the gun propellant by weight, having a nitrogen proportion of substantially twelve and six-tenths percent (12.6%) nitrogen; an energetic plasticizer component comprising from about 5.0 percent (5.0%) to about 35 percent (35.0%) of the gun propellant by weight, and comprising N-Butyl-2Nitratoethyl Nitramine (BuNena); a burning rate moderator and stabilizer component comprising from about one-half of one percent (0.5%) to about five percent (5.0%) of the gun propellant by weight, and comprising Sym-Diethyl Diphenyl Urea, N,N?-Diethyl Carbanilide (Ethyl Centralite, Centralite I); and a stabilizer component comprising about one-half of one percent (0.5%) to about five percent (5.0) of the gun propellant by weight, and comprising Acetyl triethyl citrate (ATEC).
    Type: Grant
    Filed: September 29, 2004
    Date of Patent: January 4, 2011
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventors: Floyd J. Hildebrandt, Scott Hildebrandt, legal representative, Ronald L. Simmons, Carol Simmons, legal representative, Thelma G. Manning
  • Patent number: 7842144
    Abstract: The invention relates to a novel process for the production of casting powder with high ntirocellulose content, and casting multiple-base rocket propellant including nitroglycerin formulated from such casting powder.
    Type: Grant
    Filed: June 1, 2007
    Date of Patent: November 30, 2010
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Stephen N. Stiles, John Luense
  • Patent number: 7824511
    Abstract: A method for making high energy compositions, such as propellants, explosives, pyrotechnics or the like, including a solid metal particulate fuel dispersed in a cured binder matrix. The compositions are formed with ingredients including a particulate metal fuel such as boron, binder polymer (such as GAP polyol), binder plasticizer, and a curing agent containing isocyanate. The improved method includes pre-reacting the particulate metal fuel with an amount of isocyanate, which acts as a curative to neutralize residual acid. The particulate metal fuel/isocyanate from the pre-curing step is mixed together with the binder polymer, binder plasticizer, and remaining curing agent to form the solid propellant. The initial neutralization of the metal fuel avoids gassing and improves the mechanical properties of the propellant yield.
    Type: Grant
    Filed: July 3, 2007
    Date of Patent: November 2, 2010
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: James J. Baker, Tina Woodland
  • Patent number: 7784403
    Abstract: The invention relates to an energetic igniter charge consisting of a mixture of at least one secondary explosive and an optical doping material in powder form. In accordance with the invention, the optical doping material is a metal. The energetic igniter charge can be used in a detonator as well as in an igniter.
    Type: Grant
    Filed: July 5, 2006
    Date of Patent: August 31, 2010
    Assignee: Deutsch-Franzosisches Forschungsinstitut
    Inventors: Henry Moulard, Auguste Ritter, Jean-Marie Brodbeck
  • Patent number: 7771549
    Abstract: Provided are energetic materials of low vapor pressure in the form of ionic liquids having fuel and oxidizer ions including, substituted pyridinium or imidazolium cations paired with nitrato-, perchlorato-, or nitramido-based anions, to form such ionic liquids or salts. The salts of the present invention are low melting and have essentially little or no vapor pressure over a wide temperature range. The salts of this invention are thus an important breakthrough since they can serve as high-performing monopropellants which are not complex mixtures and have no vapor toxicity. Such salts also find use as munitions, liquid explosives, reaction media for the synthesis of other high-energy materials, and as plasticizers.
    Type: Grant
    Filed: October 7, 2003
    Date of Patent: August 10, 2010
    Assignee: United States of America as represented by the Secretary of the Air Force
    Inventors: Karl O. Christe, Greg W. Drake
  • Patent number: 7754036
    Abstract: A pressable explosive composition is provided. The composition includes at least 40 weight percent of substantially uncoated fuel particles, a nitramine mechanically blended with the substantially uncoated fuel particles, and a binder coating the nitramine. The binder constitutes about 1 to about 6 weight percent of the pressable explosive composition. Also provided are a pressed thermobaric explosive, weapons containing the pressed thermobaric explosive, and methods for making the composition and thermobaric explosive.
    Type: Grant
    Filed: December 3, 2003
    Date of Patent: July 13, 2010
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Kirk E. Newman, Virgil Riffe, Steven L. Jones, Mark D. Lowell
  • Patent number: 7707819
    Abstract: Hollow RX-08HD cylindrical charges were loaded with boron and PTFE, in the form of low-bulk density powders or powders dispersed in a rigid foam matrix. Each charge was initiated by a Comp B booster at one end, producing a detonation wave propagating down the length of the cylinder, crushing the foam or bulk powder and collapsing the void spaces. The PdV work done in crushing the material heated it to high temperatures, expelling it in a high velocity fluid jet. In the case of boron particles supported in foam, framing camera photos, temperature measurements, and aluminum witness plates suggest that the boron was completely vaporized by the crush wave and that the boron vapor turbulently mixed with and burned in the surrounding air.
    Type: Grant
    Filed: September 22, 2004
    Date of Patent: May 4, 2010
    Assignee: Lawrence Livermore National Security, LLC
    Inventors: James A. Viecelli, Lowell L. Wood, Muriel Y. Ishikawa, John H. Nuckolls, Phillip F. Pagoria
  • Patent number: 7704340
    Abstract: A method of making pelletized nitrocellulose (PNC) includes preparing a lacquer, the lacquer comprising nitrocellulose (NC), ethyl acetate and ethyl centralite, the NC having a nitrogen content of at least about 12.2%; mixing the lacquer with an antisolvent to thereby emulsify the lacquer and form PNC; drowning the PNC with the antisolvent; and separating the antisolvent and ethyl acetate from the PNC.
    Type: Grant
    Filed: October 2, 2002
    Date of Patent: April 27, 2010
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: George W. Nauflett, Robert E. Farncomb
  • Patent number: 7695007
    Abstract: A device for deploying an element including a detonatable charge formed from at least one primary pyrotechnic compound; at least one initiator equipped with a reinforcing charge to initiate decomposition of the primary pyrotechnic compound(s); a secondary compound having a decomposition rate less than the decomposition rate of the primary pyrotechnic compound(s) such that the primary pyrotechnic compound(s) control(s) decomposition of the secondary compound(s) after initialization of decomposition; and at least one unconfined or weakly confined interaction chamber wherein the primary pyrotechnic compound(s) enable(s) at least one interaction of combustion products of the reducing primary compound(s) and oxidizing secondary compound(s) by oxidoreduction reaction.
    Type: Grant
    Filed: November 22, 2002
    Date of Patent: April 13, 2010
    Inventor: Paul-Philippe Cord