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).
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Patent number: 11920039Abstract: 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: GrantFiled: January 29, 2020Date of Patent: March 5, 2024Assignees: Battelle Savannah River Alliance, LLC, University of Kentucky Research FoundationInventors: Aaron L. Washington, II, John T. Bobbitt, III, John E. Anthony, Brent Peters, James C. Nicholson
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Publication number: 20210387411Abstract: 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: ApplicationFiled: June 11, 2020Publication date: December 16, 2021Inventors: Aaron L. WASHINGTON, II, Donald W. BENZA, Khai V. NGUYEN
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Publication number: 20200312472Abstract: 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: ApplicationFiled: March 29, 2019Publication date: October 1, 2020Inventors: AARON L. WASHINGTON, II, THANH-TAM T. TRUONG, LEROY MAGWOOD, JR.
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Patent number: 10752986Abstract: 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: GrantFiled: October 30, 2017Date of Patent: August 25, 2020Assignee: Savannah River Nuclear Solutions, LLCInventors: Matthew D Folsom, John T Bobbitt, III, Aaron L Washington, II, Josef A Velten
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Publication number: 20200239692Abstract: 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: ApplicationFiled: January 29, 2020Publication date: July 30, 2020Inventors: Aaron L. Washington, II, John T. Bobbitt, III, John E. Anthony, Brent Peters, James C. Nicholson
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Patent number: 10418539Abstract: 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: GrantFiled: May 17, 2017Date of Patent: September 17, 2019Assignee: Savannah River Nuclear Solutions, LLCInventors: Aaron L. Washington, II, Joseph A. Teprovich, Ragaiy Zidan
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Patent number: 10340049Abstract: 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: GrantFiled: August 4, 2016Date of Patent: July 2, 2019Assignee: Savannah River Nuclear Solutions, LLCInventors: Aaron L. Washington, II, James C. Nicholson
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Publication number: 20190127840Abstract: 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: ApplicationFiled: October 30, 2017Publication date: May 2, 2019Inventors: Matthew D. Folsom, John T. Bobbitt, III, Aaron L. Washington, II, Josef A. Velten
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Patent number: 10157689Abstract: 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: GrantFiled: December 17, 2014Date of Patent: December 18, 2018Assignee: Savannah River Nuclear Solutions, LLCInventors: Aaron L. Washington, II, Michael G. Serrato, Joseph A. Teprovich
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Publication number: 20180040387Abstract: 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: ApplicationFiled: August 4, 2016Publication date: February 8, 2018Inventors: Aaron L. Washington, II, James C. Nicholson
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Publication number: 20170263842Abstract: 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: ApplicationFiled: May 17, 2017Publication date: September 14, 2017Inventors: Aaron L. Washington, II, Joseph A. Teprovich, Ragaiy Zidan
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Patent number: 9685600Abstract: 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: GrantFiled: February 18, 2015Date of Patent: June 20, 2017Assignee: Savannah River Nuclear Solutions, LLCInventors: Aaron L. Washington, II, Joseph A. Teprovich, Ragaiy Zidan
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Publication number: 20160240765Abstract: 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: ApplicationFiled: February 18, 2015Publication date: August 18, 2016Inventors: Aaron L. Washington, II, Joseph A. Teprovich, Ragaiy Zidan
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Publication number: 20160180979Abstract: 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: ApplicationFiled: December 17, 2014Publication date: June 23, 2016Inventors: Aaron L. Washington, II, Michael G. Serrato
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Patent number: 8884228Abstract: 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: GrantFiled: January 27, 2012Date of Patent: November 11, 2014Assignees: Savannah River Nuclear Solutions, LLC, Fisk UniversityInventors: Aaron L. Washington, II, Martine C. Duff, Lucile C. Teague, Arnold Burger, Michael Groza
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Publication number: 20130193336Abstract: 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: ApplicationFiled: January 27, 2012Publication date: August 1, 2013Applicants: Fisk University, Savannah River Nuclear Solutions, LLCInventors: Aaron L. Washington, II, Martine C. Duff, Lucile C. Teague, Arnold Burger, Michael Groza