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: 20150125601Abstract: 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: ApplicationFiled: November 4, 2014Publication date: May 7, 2015Inventor: David J. IRVIN
-
Patent number: 8962840Abstract: 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: GrantFiled: March 21, 2013Date of Patent: February 24, 2015Assignee: The United States of America as Represented by the Secretary of the NavyInventors: John D. Stenger-Smith, Jennifer A. Irvin, David J. Irvin, William Lai
-
Patent number: 8737038Abstract: 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: GrantFiled: September 9, 2010Date of Patent: May 27, 2014Assignee: The United States of America as Represented by the Secretary of the NavyInventors: David J. Irvin, Jennifer A. Irvin, John D. Stenger-Smith
-
Patent number: 8680292Abstract: 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: GrantFiled: March 6, 2012Date of Patent: March 25, 2014Assignee: The United States of America as represented by the Secretary of the NavyInventors: David J. Irvin, David L. Witker, John D. Stenger-Smith, Jennifer A. Irvin
-
Patent number: 8427812Abstract: 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: GrantFiled: October 5, 2010Date of Patent: April 23, 2013Assignee: The United States of America as Represented by the Secretary of the NavyInventors: John D. Stenger-Smith, Jennifer A. Irvin, David J. Irvin, William Lai
-
Publication number: 20120168055Abstract: 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: ApplicationFiled: November 2, 2011Publication date: July 5, 2012Applicant: SYSTEMS AND MATERIALS RESEARCH CORPORATIONInventors: ALAN V. BRAY, DENISE DEPPE, LESLIE SCHMIDT, DAVID J. IRVIN
-
Patent number: 8183390Abstract: 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: GrantFiled: August 18, 2010Date of Patent: May 22, 2012Assignee: The United States of America as represented by the Secretary of the NavyInventors: David J. Irvin, David L. Witker, John D. Stenger-Smith, Jennifer A. Irvin
-
Patent number: 8053582Abstract: 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: GrantFiled: September 26, 2008Date of Patent: November 8, 2011Assignee: The United States of America as represented by the Secretary of the NavyInventors: David J. Irvin, Mark H. Mason
-
Patent number: 7829660Abstract: 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: GrantFiled: July 24, 2008Date of Patent: November 9, 2010Assignee: The United States of America as represented by the Secretary of the NavyInventors: David J. Irvin, David L. Witker, John D. Stenger-Smith, Jennifer A. Irvin
-
Patent number: 7745633Abstract: 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: GrantFiled: December 10, 2008Date of Patent: June 29, 2010Assignee: The United States of America as represented by the Secretary of the NavyInventors: David J. Irvin, Mark H. Mason
-
Patent number: 7608179Abstract: 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: GrantFiled: July 24, 2008Date of Patent: October 27, 2009Assignee: The United States of America as represented by the Secretary of the NavyInventors: David J. Irvin, David L. Witker, John D. Stenger-Smith, Jennifer A. Irvin
-
Patent number: 7601747Abstract: 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: GrantFiled: May 27, 2005Date of Patent: October 13, 2009Assignee: The United States of America as represented by the Secretary of the NavyInventors: David J. Irvin, Mark H. Mason, Richard Hollins
-
Patent number: 7557220Abstract: 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: GrantFiled: May 27, 2005Date of Patent: July 7, 2009Assignee: The United States of America as represented by the Secretary of the NavyInventors: David J. Irvin, Mark H. Mason
-
Patent number: 7544811Abstract: 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: GrantFiled: May 27, 2005Date of Patent: June 9, 2009Assignee: The United States of America as represented by the Secretary of the NavyInventors: David J. Irvin, Mark H. Mason, Stephen Fallis, Andrew Chafin
-
Patent number: 7528257Abstract: 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: GrantFiled: May 27, 2005Date of Patent: May 5, 2009Inventors: David J. Irvin, Mark H. Mason
-
Patent number: 7517997Abstract: 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: GrantFiled: May 27, 2005Date of Patent: April 14, 2009Assignee: The United States of America as represented by the Secretary of the NavyInventors: David J. Irvin, Mark H. Mason
-
Patent number: 7462681Abstract: 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: GrantFiled: September 19, 2005Date of Patent: December 9, 2008Assignee: The United States of America as represented by the Secretary of the NavyInventors: Andrew J. Guenthner, Gregory R. Yandek, David J. Irvin
-
Patent number: 7456295Abstract: 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: GrantFiled: November 25, 2006Date of Patent: November 25, 2008Assignee: The United States of America as represented by the Secretary of the NavyInventors: David J. Irvin, David L. Witker, John D. Stenger-Smith, Jennifer A. Irvin
-
Patent number: 7446208Abstract: 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: GrantFiled: May 27, 2005Date of Patent: November 4, 2008Assignee: The United States of America as represented by the Secretary of the NavyInventors: David J. Irvin, Mark H. Mason
-
Patent number: 7435310Abstract: 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 toType: GrantFiled: June 7, 2006Date of Patent: October 14, 2008Assignee: The United States of America as represented by the Secretary of the NavyInventors: M. Joseph Roberts, Scott K. Johnson, Richard A. Hollins, Curtis E. Johnson, Thomas J. Groshens, David J. Irvin