Patents by Inventor Aaron L. Washington, II

Aaron L. Washington, II 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: 11920039
    Abstract: Derivatized malachite green leuco dyes for use in radio-chromic systems are described. The dyes have the following structure: in which Ar is a substituted phenyl or thiophene ring in which at least one substitution of the Ar ring is not ortho to the bond between the ring and the linking carbon, and in which R1, R2, R3, and R4 are independently selected from methyl, alkyl, or alkyl halide. The systems include the dyes in conjunction with an activator, e.g., a halogenated activator, and a carrier, e.g., a fluid carrier or an encapsulating polymeric matrix.
    Type: Grant
    Filed: January 29, 2020
    Date of Patent: March 5, 2024
    Assignees: Battelle Savannah River Alliance, LLC, University of Kentucky Research Foundation
    Inventors: Aaron L. Washington, II, John T. Bobbitt, III, John E. Anthony, Brent Peters, James C. Nicholson
  • Publication number: 20210387411
    Abstract: Methods and systems for use in additive manufacturing are described. Methods include heating a precursor material in a mixing area upstream of a print head nozzle. An energy emission is delivered to the precursor material prior to extrusion at the nozzle. The energy emission encouraging reaction of components in the precursor material to form a solid product of the extrudate such as a polymer, a crosslinked polymeric matrix, and/or a particulate. Systems include a mixing area upstream of a nozzle and an energy source configured to deliver an emission into the mixing area at or near the nozzle outlet.
    Type: Application
    Filed: June 11, 2020
    Publication date: December 16, 2021
    Inventors: Aaron L. WASHINGTON, II, Donald W. BENZA, Khai V. NGUYEN
  • Publication number: 20200312472
    Abstract: Polymeric compositions for use in nuclear applications that exhibit long-lasting protection from degradation in the presence of oxygen (e.g., air) and high energy radiation, even when utilized in high temperature applications are described. The polymeric compositions include a particulate additive that incorporates a zinc-based solid-state antioxidant. The antioxidant can be a binary or ternary zinc-based material that can include one or more additional metals and optionally can include oxygen.
    Type: Application
    Filed: March 29, 2019
    Publication date: October 1, 2020
    Inventors: AARON L. WASHINGTON, II, THANH-TAM T. TRUONG, LEROY MAGWOOD, JR.
  • Patent number: 10752986
    Abstract: The present invention is directed to a method of manufacturing a three-dimensional carbon structure. The method requires graphene layers and/or graphene oxide layers. The layers can be provided such that they correspond to the cross-section of a pre-defined shape. In this regard, the method of the present invention can be employed to manufacture a three-dimensional carbon structure having a custom shape.
    Type: Grant
    Filed: October 30, 2017
    Date of Patent: August 25, 2020
    Assignee: Savannah River Nuclear Solutions, LLC
    Inventors: Matthew D Folsom, John T Bobbitt, III, Aaron L Washington, II, Josef A Velten
  • Publication number: 20200239692
    Abstract: Derivatized malachite green leuco dyes for use in radio-chromic systems are described. The dyes have the following structure: in which Ar is a substituted phenyl or thiophene ring in which at least one substitution of the Ar ring is not ortho to the bond between the ring and the linking carbon, and in which R1, R2, R3, and R4 are independently selected from methyl, alkyl, or alkyl halide. The systems include the dyes in conjunction with an activator, e.g., a halogenated activator, and a carrier, e.g., a fluid carrier or an encapsulating polymeric matrix.
    Type: Application
    Filed: January 29, 2020
    Publication date: July 30, 2020
    Inventors: Aaron L. Washington, II, John T. Bobbitt, III, John E. Anthony, Brent Peters, James C. Nicholson
  • Patent number: 10418539
    Abstract: Superconductive fullerenes, methods for enhancing characteristics of superconductive fullerenes and devices incorporating the fullerenes are disclosed. Enhancements can include increase in the critical transition temperature at a constant magnetic field; the existence of a superconducting hysteresis over a changing magnetic field; a decrease in the stabilizing magnetic field required for the onset of superconductivity; and/or an increase in the stability of superconductivity over a large magnetic field. The enhancements can be brought about by transmitting electromagnetic radiation to the superconductive fullerene such that the electromagnetic radiation impinges on the fullerene with an energy that is greater than the band gap of the fullerene.
    Type: Grant
    Filed: May 17, 2017
    Date of Patent: September 17, 2019
    Assignee: Savannah River Nuclear Solutions, LLC
    Inventors: Aaron L. Washington, II, Joseph A. Teprovich, Ragaiy Zidan
  • Patent number: 10340049
    Abstract: Alpha/beta radiation barrier materials and structures formed to include the barrier materials are described. Barrier materials include a matrix and particulate materials contained in the matrix. The particulates include alpha/beta radiation absorbers. Alpha/beta radiation absorbers of the barrier materials can be molecular, particulates, or defined nanostructures that are capable of absorbing incident alpha/beta particle energies. Matrix materials can include organic or inorganic materials including thermoplastic polymers, thermoset polymers, glasses, ceramics, etc.
    Type: Grant
    Filed: August 4, 2016
    Date of Patent: July 2, 2019
    Assignee: Savannah River Nuclear Solutions, LLC
    Inventors: Aaron L. Washington, II, James C. Nicholson
  • Publication number: 20190127840
    Abstract: The present invention is directed to a method of manufacturing a three-dimensional carbon structure. The method requires graphene layers and/or graphene oxide layers. The layers can be provided such that they correspond to the cross-section of a pre-defined shape. In this regard, the method of the present invention can be employed to manufacture a three-dimensional carbon structure having a custom shape.
    Type: Application
    Filed: October 30, 2017
    Publication date: May 2, 2019
    Inventors: Matthew D. Folsom, John T. Bobbitt, III, Aaron L. Washington, II, Josef A. Velten
  • Patent number: 10157689
    Abstract: Radiological containment bags for use in storing alpha particle emitting waste are described. The radiological containment bags are formed of a multilayer film with an inner layer of the film being a sacrificial layer that lies between the interior of the bag and a structural polymeric layer. The sacrificial layer includes a flexible composite material that in turn includes a polymeric matrix and an alpha particle energy absorber incorporated in the polymeric matrix. The sacrificial layer can include a chromophore that can detect early degradation of the sacrificial material.
    Type: Grant
    Filed: December 17, 2014
    Date of Patent: December 18, 2018
    Assignee: Savannah River Nuclear Solutions, LLC
    Inventors: Aaron L. Washington, II, Michael G. Serrato, Joseph A. Teprovich
  • Publication number: 20180040387
    Abstract: Alpha/beta radiation barrier materials and structures formed to include the barrier materials are described. Barrier materials include a matrix and particulate materials contained in the matrix. The particulates include alpha/beta radiation absorbers. Alpha/beta radiation absorbers of the barrier materials can be molecular, particulates, or defined nanostructures that are capable of absorbing incident alpha/beta particle energies. Matrix materials can include organic or inorganic materials including thermoplastic polymers, thermoset polymers, glasses, ceramics, etc.
    Type: Application
    Filed: August 4, 2016
    Publication date: February 8, 2018
    Inventors: Aaron L. Washington, II, James C. Nicholson
  • Publication number: 20170263842
    Abstract: Superconductive fullerenes, methods for enhancing characteristics of superconductive fullerenes and devices incorporating the fullerenes are disclosed. Enhancements can include increase in the critical transition temperature at a constant magnetic field; the existence of a superconducting hysteresis over a changing magnetic field; a decrease in the stabilizing magnetic field required for the onset of superconductivity; and/or an increase in the stability of superconductivity over a large magnetic field. The enhancements can be brought about by transmitting electromagnetic radiation to the superconductive fullerene such that the electromagnetic radiation impinges on the fullerene with an energy that is greater than the band gap of the fullerene.
    Type: Application
    Filed: May 17, 2017
    Publication date: September 14, 2017
    Inventors: Aaron L. Washington, II, Joseph A. Teprovich, Ragaiy Zidan
  • Patent number: 9685600
    Abstract: Methods for enhancing characteristics of superconductive fullerenes and devices incorporating the fullerenes are disclosed. Enhancements can include increase in the critical transition temperature at a constant magnetic field; the existence of a superconducting hysteresis over a changing magnetic field; a decrease in the stabilizing magnetic field required for the onset of superconductivity; and/or an increase in the stability of superconductivity over a large magnetic field. The enhancements can be brought about by transmitting electromagnetic radiation to the superconductive fullerene such that the electromagnetic radiation impinges on the fullerene with an energy that is greater than the band gap of the fullerene.
    Type: Grant
    Filed: February 18, 2015
    Date of Patent: June 20, 2017
    Assignee: Savannah River Nuclear Solutions, LLC
    Inventors: Aaron L. Washington, II, Joseph A. Teprovich, Ragaiy Zidan
  • Publication number: 20160240765
    Abstract: Methods for enhancing characteristics of superconductive fullerenes and devices incorporating the fullerenes are disclosed. Enhancements can include increase in the critical transition temperature at a constant magnetic field; the existence of a superconducting hysteresis over a changing magnetic field; a decrease in the stabilizing magnetic field required for the onset of superconductivity; and/or an increase in the stability of superconductivity over a large magnetic field. The enhancements can be brought about by transmitting electromagnetic radiation to the superconductive fullerene such that the electromagnetic radiation impinges on the fullerene with an energy that is greater than the band gap of the fullerene.
    Type: Application
    Filed: February 18, 2015
    Publication date: August 18, 2016
    Inventors: Aaron L. Washington, II, Joseph A. Teprovich, Ragaiy Zidan
  • Publication number: 20160180979
    Abstract: Radiological containment bags for use in storing alpha particle emitting waste are described. The radiological containment bags are formed of a multilayer film with an inner layer of the film being a sacrificial layer that lies between the interior of the bag and a structural polymeric layer. The sacrificial layer includes a flexible composite material that in turn includes a polymeric matrix and an alpha particle energy absorber incorporated in the polymeric matrix. The sacrificial layer can include a chromophore that can detect early degradation of the sacrificial material.
    Type: Application
    Filed: December 17, 2014
    Publication date: June 23, 2016
    Inventors: Aaron L. Washington, II, Michael G. Serrato
  • Patent number: 8884228
    Abstract: An apparatus and process is provided to illustrate the manipulation of the internal electric field of CZT using multiple wavelength light illumination on the crystal surface at RT. The control of the internal electric field is shown through the polarization in the IR transmission image under illumination as a result of the Pockels effect.
    Type: Grant
    Filed: January 27, 2012
    Date of Patent: November 11, 2014
    Assignees: Savannah River Nuclear Solutions, LLC, Fisk University
    Inventors: Aaron L. Washington, II, Martine C. Duff, Lucile C. Teague, Arnold Burger, Michael Groza
  • Publication number: 20130193336
    Abstract: An apparatus and process is provided to illustrate the manipulation of the internal electric field of CZT using multiple wavelength light illumination on the crystal surface at RT. The control of the internal electric field is shown through the polarization in the IR transmission image under illumination as a result of the Pockels effect.
    Type: Application
    Filed: January 27, 2012
    Publication date: August 1, 2013
    Applicants: Fisk University, Savannah River Nuclear Solutions, LLC
    Inventors: Aaron L. Washington, II, Martine C. Duff, Lucile C. Teague, Arnold Burger, Michael Groza