Patents by Inventor Andrew P. Purdy

Andrew P. Purdy 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).

  • Patent number: 11780860
    Abstract: Cyanophosphines other than P(CN)3 react with lithium dicyanamide to produce lithiated carbon phosphonitrides with mobile Li+ ions.
    Type: Grant
    Filed: November 9, 2022
    Date of Patent: October 10, 2023
    Assignee: The Government of the United States of America, as represented by the Secretary of the Navy
    Inventors: Brian L. Chaloux, Andrew P. Purdy, Albert Epshteyn
  • Publication number: 20230174563
    Abstract: Cyanophosphines other than P(CN)3 react with lithium dicyanamide to produce lithiated carbon phosphonitrides with mobile Li+ ions.
    Type: Application
    Filed: November 9, 2022
    Publication date: June 8, 2023
    Inventors: Brian L. Chaloux, Andrew P. Purdy, Albert Epshteyn
  • Patent number: 11655197
    Abstract: A nanoparticle of a decomposition product of a transition metal aluminum hydride compound, a transition metal borohydride compound, or a transition metal gallium hydride compound. A process of: reacting a transition metal salt with an aluminum hydride compound, a borohydride compound, or a gallium hydride compound to produce one or more of the nanoparticles. The reaction occurs in solution while being sonicated at a temperature at which the metal hydride compound decomposes. A process of: reacting a nanoparticle with a compound containing at least two hydroxyl groups to form a coating having multi-dentate metal-alkoxides.
    Type: Grant
    Filed: December 3, 2020
    Date of Patent: May 23, 2023
    Assignee: The Government of the United States of America, as represented by the Secretary of the Navy
    Inventors: Albert Epshteyn, Andrew P. Purdy
  • Publication number: 20210171417
    Abstract: A nanoparticle of a decomposition product of a transition metal aluminum hydride compound, a transition metal borohydride compound, or a transition metal gallium hydride compound. A process of: reacting a transition metal salt with an aluminum hydride compound, a borohydride compound, or a gallium hydride compound to produce one or more of the nanoparticles. The reaction occurs in solution while being sonicated at a temperature at which the metal hydride compound decomposes. A process of: reacting a nanoparticle with a compound containing at least two hydroxyl groups to form a coating having multi-dentate metal-alkoxides.
    Type: Application
    Filed: December 3, 2020
    Publication date: June 10, 2021
    Applicant: The Government of the United States of America, as represented by the Secretary of the Navy
    Inventors: Albert Epshteyn, Andrew P. Purdy
  • Publication number: 20210171418
    Abstract: A nanoparticle of a decomposition product of a transition metal aluminum hydride compound, a transition metal borohydride compound, or a transition metal gallium hydride compound. A process of: reacting a transition metal salt with an aluminum hydride compound, a borohydride compound, or a gallium hydride compound to produce one or more of the nanoparticles. The reaction occurs in solution while being sonicated at a temperature at which the metal hydride compound decomposes. A process of: reacting a nanoparticle with a compound containing at least two hydroxyl groups to form a coating having multi-dentate metal-alkoxides.
    Type: Application
    Filed: December 3, 2020
    Publication date: June 10, 2021
    Applicant: The Government of the United States of America, as represented by the Secretary of the Navy
    Inventors: Albert Epshteyn, Andrew P. Purdy
  • Patent number: 10510458
    Abstract: A lithiated carbon phosphonitride material is made by, for example, reacting P(CN)3 with LiN(CN)2 in solution (for example, dimethoxyethane or pyridine), then drying the solution to obtain the product. The material is a thermoset that is stable to over 400° C. and exhibits up to 10?3 S·cm2 of Li+ conductivity.
    Type: Grant
    Filed: February 22, 2019
    Date of Patent: December 17, 2019
    Assignee: The Government of the United States of America, as represented by the Secretary of the Navy
    Inventors: Albert Epshteyn, Andrew P. Purdy, Brian L. Chaloux
  • Publication number: 20190189303
    Abstract: A lithiated carbon phosphonitride material is made by, for example, reacting P(CN)3 with LiN(CN)2 in solution (for example, dimethoxyethane or pyridine), then drying the solution to obtain the product. The material is a thermoset that is stable to over 400° C. and exhibits up to 10?3 S·cm2 of Li+ conductivity.
    Type: Application
    Filed: February 22, 2019
    Publication date: June 20, 2019
    Inventors: Albert Epshteyn, Andrew P. Purdy, Brian L. Chaloux
  • Patent number: 10249403
    Abstract: A lithiated carbon phosphonitride material is made by, for example, reacting P(CN)3 with LiN(CN)2 in solution (for example, dimethoxyethane or pyridine), then drying the solution to obtain the product. The material is a thermoset that is stable to over 400° C. and exhibits up to 10?3 S·cm2 of Li+ conductivity.
    Type: Grant
    Filed: June 22, 2017
    Date of Patent: April 2, 2019
    Assignee: The United States of America, as represented by the Secretary of the Navy
    Inventors: Albert Epshteyn, Andrew P. Purdy, Brian L. Chaloux
  • Publication number: 20170372812
    Abstract: A lithiated carbon phosphonitride material is made by, for example, reacting P(CN)3 with LiN(CN)2 in solution (for example, dimethoxyethane or pyridine), then drying the solution to obtain the product. The material is a thermoset that is stable to over 400° C. and exhibits up to 10?3 S·cm2 of Li+ conductivity.
    Type: Application
    Filed: June 22, 2017
    Publication date: December 28, 2017
    Inventors: Albert Epshteyn, Andrew P. Purdy, Brian L. Chaloux
  • Publication number: 20160107950
    Abstract: A nanoparticle of a decomposition product of a transition metal aluminum hydride compound, a transition metal borohydride compound, or a transition metal gallium hydride compound. A process of: reacting a transition metal salt with an aluminum hydride compound, a borohydride compound, or a gallium hydride compound to produce one or more of the nanoparticles. The reaction occurs in solution while being sonicated at a temperature at which the metal hydride compound decomposes. A process of: reacting a nanoparticle with a compound containing at least two hydroxyl groups to form a coating having multi-dentate metal-alkoxides.
    Type: Application
    Filed: October 13, 2015
    Publication date: April 21, 2016
    Applicant: The Government of the United States of America, as represented by the Secretary of the Navy
    Inventors: Albert Epshteyn, Andrew P. Purdy
  • Patent number: 9174889
    Abstract: A nanoparticle of a decomposition product of a transition metal aluminum hydride compound, a transition metal borohydride compound, or a transition metal gallium hydride compound. A process of: reacting a transition metal salt with an aluminum hydride compound, a borohydride compound, or a gallium hydride compound to produce one or more of the nanoparticles. The reaction occurs in solution while being sonicated at a temperature at which the metal hydride compound decomposes. A process of: reacting a nanoparticle with a compound containing at least two hydroxyl groups to form a coating having multi-dentate metal-alkoxides.
    Type: Grant
    Filed: November 26, 2008
    Date of Patent: November 3, 2015
    Assignee: The United States of America, as represented by the Secretary of the Navy
    Inventors: Albert Epshteyn, Andrew P Purdy
  • Patent number: 9108247
    Abstract: A nanopowder and a method of making are disclosed. The nanopowder may be in the form of nanoparticles with an average size of less than about 200 nm and contain a reactive transition metal, such as hafnium, zirconium, or titanium. The nanopowder can be formed in a liquid under sonication by reducing a halide of the transition metal.
    Type: Grant
    Filed: May 16, 2014
    Date of Patent: August 18, 2015
    Assignee: The United States of America, as represented by the Secretary of the Navy
    Inventors: Albert Epshteyn, Andrew P. Purdy
  • Patent number: 9017628
    Abstract: A method of preparing a nanomaterial comprising boron includes sonicating a boron trihalide and/or boron alkoxide in a hydrocarbon solvent with an alkali metal under an inert atmosphere to form a dark solid, and annealing the dark solid at a temperature sufficient to sublime alkali metal salt therein, thereby obtaining a boron nanomaterial. Reacting with a Group IVB metal produces a metal boride, and combining an alkali metal salt of a hydrocarbon with the boron trihalide prior to sonicating produces a carbonaceous boron material.
    Type: Grant
    Filed: November 25, 2013
    Date of Patent: April 28, 2015
    Assignee: The United States of America, as represented by the Secretary of the Navy
    Inventor: Andrew P. Purdy
  • Publication number: 20140311293
    Abstract: A nanopowder and a method of making are disclosed. The nanopowder may be in the form of nanoparticles with an average size of less than about 200 nm and contain a reactive transition metal, such as hafnium, zirconium, or titanium. The nanopowder can be formed in a liquid under sonication by reducing a halide of the transition metal.
    Type: Application
    Filed: May 16, 2014
    Publication date: October 23, 2014
    Applicant: The Government of the US, as represented by the Secretary of the Navy
    Inventors: Albert Epshteyn, Andrew P. Purdy
  • Patent number: 8753418
    Abstract: A nanopowder and a method of making are disclosed. The nanopowder may be in the form of nanoparticles with an average size of less than about 200 nm and contain a reactive transition metal, such as hafnium, zirconium, or titanium. The nanopowder can be formed in a liquid under sonication by reducing a halide of the transition metal.
    Type: Grant
    Filed: June 11, 2010
    Date of Patent: June 17, 2014
    Assignee: The United States of America, as represented by the Secretary of the Navy
    Inventors: Albert Epshteyn, Andrew P Purdy
  • Publication number: 20140147364
    Abstract: A method of preparing a nanomaterial comprising boron includes sonicating a boron trihalide and/or boron alkoxide in a hydrocarbon solvent with an alkali metal under an inert atmosphere to form a dark solid, and annealing the dark solid at a temperature sufficient to sublime alkali metal salt therein, thereby obtaining a boron nanomaterial. Reacting with a Group IVB metal produces a metal boride, and combining an alkali metal salt of a hydrocarbon with the boron trihalide prior to sonicating produces a carbonaceous boron material.
    Type: Application
    Filed: November 25, 2013
    Publication date: May 29, 2014
    Inventor: Andrew P. Purdy
  • Patent number: 8491698
    Abstract: The present invention is directed to a method for producing novel metal nanoparticles and nanomaterials. The method involves mixing one or more metal halide starting materials, one or more lithium reducing agent and one or more solvents. In an exemplary embodiment, the resultant metal nanoparticles are substantially free from impurities and have a novel porous and substantially hollow structure.
    Type: Grant
    Filed: June 15, 2010
    Date of Patent: July 23, 2013
    Assignee: The United States of America, as represented by the Secretary of the Navy
    Inventor: Andrew P Purdy
  • Patent number: 8188142
    Abstract: The compounds shown below. R is —O—, —O—(CH2)n—O—, or —(O—CH2—CH2)n—O—; and n is a positive integer. Heating an allyl ether compound in the presence of Fe(CO)5 and a base to form the below propenyl ether monomer. Polymerizing the below propenyl ether monomer.
    Type: Grant
    Filed: July 16, 2008
    Date of Patent: May 29, 2012
    Assignee: The United States of America, as represented by the Secretary of the Navy
    Inventor: Andrew P Purdy
  • Publication number: 20120090743
    Abstract: A nanoparticle of a decomposition product of a transition metal aluminum hydride compound, a transition metal borohydride compound, or a transition metal gallium hydride compound. A process of: reacting a transition metal salt with an aluminum hydride compound, a borohydride compound, or a gallium hydride compound to produce one or more of the nanoparticles. The reaction occurs in solution while being sonicated at a temperature at which the metal hydride compound decomposes. A process of: reacting a nanoparticle with a compound containing at least two hydroxyl groups to form a coating having multi-dentate metal-alkoxides.
    Type: Application
    Filed: November 26, 2008
    Publication date: April 19, 2012
    Applicant: The Government of the United States of America as represented by the Secretary of the Navy
    Inventors: Albert Epshteyn, Andrew P. Purdy
  • Publication number: 20100314578
    Abstract: The present invention is directed to a method for producing novel metal nanoparticles and nanomaterials. The method involves mixing one or more metal halide starting materials, one or more lithium reducing agent and one or more solvents. In an exemplary embodiment, the resultant metal nanoparticles are substantially free from impurities and have a novel porous and substantially hollow structure.
    Type: Application
    Filed: June 15, 2010
    Publication date: December 16, 2010
    Applicant: The Government of the US, as represented by the Secretary of the Navy
    Inventor: Andrew P. Purdy