Patents by Inventor David J. Irvin

David J. Irvin 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).

  • Publication number: 20150125601
    Abstract: A method and apparatus for the production of nano-sized silicon particles via a low-temperature chemical solid-liquid reaction between a silicon-containing compound and a reducing agent. Embodiments of the present invention provide a production method that is cost-effective, while producing elemental silicon having purity, particle sizes, and stability suitable for energetics applications including solid propulsion additives, igniters, flares, decoys, and liquid fuel catalysts.
    Type: Application
    Filed: November 4, 2014
    Publication date: May 7, 2015
    Inventor: David J. IRVIN
  • Patent number: 8962840
    Abstract: A process used to cast films including: mixing BBL and a room temperature molten salt from a range of about 35:65 weight ratio, dissolving the mixture in about 1% methanesulfonic acid to produce a BBL solution, drop casting the solution onto glass or gold coated glass at 140° C. in air and heating for about 2 hours to produce films, drying the films in a vacuum oven at about 100° C. for at least 24 hours under dynamic vacuum, and rinsing the films to remove residual ionic liquid.
    Type: Grant
    Filed: March 21, 2013
    Date of Patent: February 24, 2015
    Assignee: The United States of America as Represented by the Secretary of the Navy
    Inventors: John D. Stenger-Smith, Jennifer A. Irvin, David J. Irvin, William Lai
  • Patent number: 8737038
    Abstract: An electroactive polymer based super capacitor capable of operation at MILSPEC temperatures, with electroactive polymers acting as the charge storage layers, and a mixture of electrolytes enabling operation down to ?60° C.
    Type: Grant
    Filed: September 9, 2010
    Date of Patent: May 27, 2014
    Assignee: The United States of America as Represented by the Secretary of the Navy
    Inventors: David J. Irvin, Jennifer A. Irvin, John D. Stenger-Smith
  • Patent number: 8680292
    Abstract: The invention demonstrates the synthesis of a new pyrazole-containing monomer by means of an easily implemented two-step process. This monomer can be electropolymerized to yield a stable n-doping polymer that may easily be electrochemically characterized. It is demonstrated that the electrochemical behavior of the polymer films produced is dependent upon the conditions applied during electrodeposition. Films deposited by cycling only at relatively positive potentials (0 to 2000 mV) show less intense n-doping responses than those films obtained by scanning the applied potential throughout a wider range (?2000 mV to 2000 mV).
    Type: Grant
    Filed: March 6, 2012
    Date of Patent: March 25, 2014
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: David J. Irvin, David L. Witker, John D. Stenger-Smith, Jennifer A. Irvin
  • Patent number: 8427812
    Abstract: A process used to cast films including: mixing BBL and a room temperature molten salt from a range of about 35:65 weight ratio, dissolving the mixture in about 1% methanesulfonic acid to produce a BBL solution, drop casting the solution onto glass or gold coated glass at 140° C. in air and heating for about 2 hours to produce films, drying the films in a vacuum oven at about 100° C. for at least 24 hours under dynamic vacuum, and rinsing the films to remove residual ionic liquid.
    Type: Grant
    Filed: October 5, 2010
    Date of Patent: April 23, 2013
    Assignee: The United States of America as Represented by the Secretary of the Navy
    Inventors: John D. Stenger-Smith, Jennifer A. Irvin, David J. Irvin, William Lai
  • Publication number: 20120168055
    Abstract: An apparatus for making and using a fastener suitable for use in airplane manufacture or repair that is coated with a pre-mixed moisture cure sealant. The sealant layer is coated with a frangible moisture barrier that will break apart when the fastener is installed, thus exposing the sealant to a moisture source. Once exposed to moisture, the sealant will begin to cure. Preferred embodiments also provide a premature cure indicator that provides a visual indication that the outer moisture resistant layer has been damaged.
    Type: Application
    Filed: November 2, 2011
    Publication date: July 5, 2012
    Applicant: SYSTEMS AND MATERIALS RESEARCH CORPORATION
    Inventors: ALAN V. BRAY, DENISE DEPPE, LESLIE SCHMIDT, DAVID J. IRVIN
  • Patent number: 8183390
    Abstract: The invention demonstrates the synthesis of a new pyrazole-containing monomer by means of an easily implemented two-step process. This monomer can be electropolymerized to yield a stable n-doping polymer that may easily be electrochemically characterized. It is demonstrated that the electrochemical behavior of the polymer films produced is dependent upon the conditions applied during electrodeposition. Films deposited by cycling only at relatively positive potentials (0 to 2000 mV) show less intense n-doping responses than those films obtained by scanning the applied potential throughout a wider range (?2000 mV to 2000 mV).
    Type: Grant
    Filed: August 18, 2010
    Date of Patent: May 22, 2012
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: David J. Irvin, David L. Witker, John D. Stenger-Smith, Jennifer A. Irvin
  • Patent number: 8053582
    Abstract: A cross-linked polyisocyanate polymer and a process for preparation of a polymer having the general structure (I) including reacting an effective amount of tetrazole polyol with isocyanate resin, combining at a temperature in the range of about 50° C. to about 100° C. for a time period in the range of about 1 to about 24 hours and cooling to room temperature producing a cross-linked polyisocyanate polymer.
    Type: Grant
    Filed: September 26, 2008
    Date of Patent: November 8, 2011
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: David J. Irvin, Mark H. Mason
  • Patent number: 7829660
    Abstract: The present invention demonstrates the synthesis of a new pyrazole-containing monomer by means of an easily implemented two-step process. This monomer can be electropolymerized to yield a stable n-doping polymer that may easily be electrochemically characterized. It is demonstrated that the electrochemical behavior of the polymer films produced is dependent upon the conditions applied during electrodeposition. Films deposited by cycling only at relatively positive potentials (0 to 2000 mV) show less intense n-doping responses than those films obtained by scanning the applied potential throughout a wider range (?2000 mV to 2000 mV).
    Type: Grant
    Filed: July 24, 2008
    Date of Patent: November 9, 2010
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: David J. Irvin, David L. Witker, John D. Stenger-Smith, Jennifer A. Irvin
  • Patent number: 7745633
    Abstract: A linear isocyanate polymer produced by utilizing an effective amount of tetrazole diol or tetrazole polyol, reacting with an effective amount isocyanate resin, and cooling to room temperature producing a linear polyisocyanate polymer.
    Type: Grant
    Filed: December 10, 2008
    Date of Patent: June 29, 2010
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: David J. Irvin, Mark H. Mason
  • Patent number: 7608179
    Abstract: The present invention demonstrates the synthesis of a new pyrazole-containing monomer by an easily implemented two-step process. This monomer can be electropolymerized to yield a stable n-doping polymer that may easily be electrochemically characterized. It is demonstrated that the electrochemical behavior of the polymer films produced is dependent upon the conditions applied during electrodeposition. Films deposited by cycling only at relatively positive potentials (0 to 2000 mV) show less intense n-doping responses than those films obtained by scanning the applied potential throughout a wider range (?2000 mV to 2000 mV).
    Type: Grant
    Filed: July 24, 2008
    Date of Patent: October 27, 2009
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: David J. Irvin, David L. Witker, John D. Stenger-Smith, Jennifer A. Irvin
  • Patent number: 7601747
    Abstract: A one-pot process for making energetic cast cured binders making di-tetrazoles to produce di-functional di-tetrazole diols for making tetrazole base polymers. Embodiments of the present invention relate generally to a process for preparation of a di-functional monomer including reacting an effective amount of nitrile(s) with inorganic azide and a divalent zinc salt in a first solvent, cooling to room temperature producing a di-tetrazole, purifying said di-tetrazole by recrystallization in a second solvent, and reacting an effective amount of said purified di-tetrazole with a third solvent, a soluble reversible or non-reversible base, and 2-chloro-ethanol, cooling to room temperature producing a di-tetrazole diol and is prepared in a one-pot process. Embodiments of the present invention further include the monomers produced by the one-pot process described herein.
    Type: Grant
    Filed: May 27, 2005
    Date of Patent: October 13, 2009
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: David J. Irvin, Mark H. Mason, Richard Hollins
  • Patent number: 7557220
    Abstract: A linear isocyanate polymer produced by utilizing an effective amount of tetrazole diol or tetrazole polyol, reacting with an effective amount isocyanate resin, and cooling to room temperature producing a linear polyisocyanate polymer.
    Type: Grant
    Filed: May 27, 2005
    Date of Patent: July 7, 2009
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: David J. Irvin, Mark H. Mason
  • Patent number: 7544811
    Abstract: The present invention discloses monomers of structure (IV) wherein “X” is an alkyl, aryl, or oligoether group, and “R” is an alkyl, aryl, or oligoether group that is chemically bonded to the N1 or N2 position of each of the tetrazole rings. The monomers of the present invention are suitable as binders in energetic compositions.
    Type: Grant
    Filed: May 27, 2005
    Date of Patent: June 9, 2009
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: David J. Irvin, Mark H. Mason, Stephen Fallis, Andrew Chafin
  • Patent number: 7528257
    Abstract: A process for making energetic cast cured binders by making di-tetrazoles to produce di-functional tetrazole diols for producing tetrazole base polymers. Embodiments of the present invention relates generally to a process for preparation of a monomer including reacting an effective amount of nitrile(s) with inorganic azide and a divalent zinc salt in a first solvent, cooling to room temperature producing a di-tetrazole, purifying the di-tetrazole by recrystallization in a second solvent; and reacting an effective amount of the purified di-tetrazole with a third solvent, a soluble reversible or non-reversible base, and 2-chloro-ethanol, cooling to room temperature producing a di-functional tetrazole diol.
    Type: Grant
    Filed: May 27, 2005
    Date of Patent: May 5, 2009
    Inventors: David J. Irvin, Mark H. Mason
  • Patent number: 7517997
    Abstract: A cross-linked polyisocyanate polymer and a process for preparation of a polymer having the general structure (I) including reacting an effective amount of tetrazole polyol with isocyanate resin, combining at a temperature in the range of about 50° C. to about 100° C. for a time period in the range of about 1 to about 24 hours and cooling to room temperature producing a cross-linked polyisocyanate polymer.
    Type: Grant
    Filed: May 27, 2005
    Date of Patent: April 14, 2009
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: David J. Irvin, Mark H. Mason
  • Patent number: 7462681
    Abstract: A polycyanurate composition (I), wherein “n” is a positive integer of about 1 to about 10, and wherein R, R?, and R? comprising at least one of C, H, N, O, F, Si, P, S, Cl, Br, I, and any combination thereof. A method of making a polycyanurate composition (I) including, providing at least one semi-aliphatic polycarbonate (V), wherein R comprises at least one of C, H, N, O, F, Si, P, S, Cl, Br, I, providing at least one uncured reactive thermoset monomer, dissolving the polycarbonate in a solvent with a high vapor pressure or suspending the polycarbonate directly into the reactive monomer, mixing the liquefied polycarbonate with the uncured reactive thermoset monomer into a homogeneous liquid component, curing the liquid component into a viscous component, and exposing the cured component to temperatures of about 50° C. to about 400° C. forming tricyanurate linkages in the polycyanurate composition (I).
    Type: Grant
    Filed: September 19, 2005
    Date of Patent: December 9, 2008
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Andrew J. Guenthner, Gregory R. Yandek, David J. Irvin
  • Patent number: 7456295
    Abstract: The present invention demonstrates the synthesis of a new pyrazole-containing monomer by means of an easily implemented two-step process. This monomer can be electropolymerized to yield a stable n-doping polymer that may easily be electrochemically characterized. It is demonstrated that the electrochemical behavior of the polymer films produced is dependent upon the conditions applied during electrodeposition. Films deposited by cycling only at relatively positive potentials (0 to 2000 mV) show less intense n-doping responses than those films obtained by scanning the applied potential throughout a wider range (?2000 mV to 2000 mV). It is emphasized that this abstract is provided to comply with the rules requiring an abstract that will allow a searcher or other reader to quickly ascertain the subject matter of the technical disclosure. It is submitted with the understanding that it will not be used to interpret or limit the scope of the claims.
    Type: Grant
    Filed: November 25, 2006
    Date of Patent: November 25, 2008
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: David J. Irvin, David L. Witker, John D. Stenger-Smith, Jennifer A. Irvin
  • Patent number: 7446208
    Abstract: A process for preparation of polymers including reacting an effective amount of tetrazole diols or tetrazole polyols with isocyanate resins to produce tetrazole based linear isocyanate polymers.
    Type: Grant
    Filed: May 27, 2005
    Date of Patent: November 4, 2008
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: David J. Irvin, Mark H. Mason
  • Patent number: 7435310
    Abstract: A method of making films surface imprinted with nanometer-sized particles to produce micro- and/or nano-structured electron and hole collecting interfaces, include providing at least one transparent substrate, providing at least one photoabsorbing conjugated polymer, providing a sufficient amount of nanometer-sized particles to produce a charge separation interface, providing at least one transparent polymerizable layer, embedding the nanometer-sized particles in the conjugated polymer, applying the polymerizable layer and the conjugated polymer/nanometer-sized particle mixture on separate substrates where the nanometer-sized particles form a stamp surface, imprinting the stamp surface into the surface of the polymerizable film layer to produce micro- and/or nano-structured electron and hole collecting interfaces, polymerizing the polymerizable film layer to form a conformal gap, and filling the gap with at least one photoabsorbing material to promote the generation of photoexcited electrons and transport to
    Type: Grant
    Filed: June 7, 2006
    Date of Patent: October 14, 2008
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: M. Joseph Roberts, Scott K. Johnson, Richard A. Hollins, Curtis E. Johnson, Thomas J. Groshens, David J. Irvin