Patents by Inventor Mathew Wolford

Mathew Wolford 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).

  • Desensitization of Aluminum Alloys Using Pulsed Electron Beams
    Publication number: 20160108504
    Abstract: A method for desensitizing an aluminum alloy is presented. A desired location on the surface of an aluminum alloy sample is exposed to a controlled pulsed electron beam. The pulsed electron beam heats a shallow layer of the metal alloy having a desired depth at the desired location on the surface of the sample to a temperature between a solvus temperature and an annealing temperature of the metal alloy to controllably reduce a degree of sensitization of the metal alloy sample at the desired location, an extent of a reduction in the degree of sensitization being controllable by varying at least one of a voltage, a current density, a pulse duration, a pulse frequency and a number of pulses of the electron beam.
    Type: Application
    Filed: February 5, 2015
    Publication date: April 21, 2016
    Inventors: John D. Sethian, Matthew C. Myers, Mathew Wolford, Frank Hegeler, Ronald L. Holtz, Derek Horton, Alexis C. Lewis, Kathryn J. Wahl
  • Desensitization of aluminum alloys using pulsed electron beams
    Patent number: 9315886
    Abstract: A method for desensitizing an aluminum alloy is presented. A desired location on the surface of an aluminum alloy sample is exposed to a controlled pulsed electron beam. The pulsed electron beam heats a shallow layer of the metal alloy having a desired depth at the desired location on the surface of the sample to a temperature between a solvus temperature and an annealing temperature of the metal alloy to controllably reduce a degree of sensitization of the metal alloy sample at the desired location, an extent of a reduction in the degree of sensitization being controllable by varying at least one of a voltage, a current density, a pulse duration, a pulse frequency and a number of pulses of the electron beam.
    Type: Grant
    Filed: February 5, 2015
    Date of Patent: April 19, 2016
    Assignee: The United States of America, as represented by the Secretary of the Navy
    Inventors: John D. Sethian, Matthew C. Myers, Mathew Wolford, Frank Hegeler, Ronald L. Holtz, Derek Horton, Alexis C. Lewis, Kathryn J. Wahl
  • Catalyst-free removal of NOfrom combustion exhausts using intense pulsed electron beams
    Patent number: 9089815
    Abstract: A process and apparatus for removing NOx from exhaust gases produced by combustion-based energy sources. An array of high voltage pulsed electron beams are repetitively generated and transported through a thin foil into the exhaust gas containing NOx. The electron beam deposits its energy into the gas and produces reactive radicals N2+, N+, e, N2 from the NOx in the gas. These radicals recombine through chemical reactions to produce benign by-products nitrogen N2 and oxygen O2 which are output into the atmosphere.
    Type: Grant
    Filed: October 5, 2012
    Date of Patent: July 28, 2015
    Assignee: The United States of America, as represented by the Secretary of the Navy
    Inventors: John D. Sethian, Matthew Myers, Mathew Wolford, Frank Hegeler
  • Catalyst-Free Removal of NOx from Combustion Exhausts Using Intense Pulsed Electron Beams
    Publication number: 20130153404
    Abstract: A process and apparatus for removing NOx from exhaust gases produced by combustion-based energy sources. An array of high voltage pulsed electron beams are repetitively generated and transported through a thin foil into the exhaust gas containing NOx. The electron beam deposits its energy into the gas and produces reactive radicals N2+, N+, e, N2 from the NOx in the gas. These radicals recombine through chemical reactions to produce benign by-products nitrogen N2 and oxygen O2 which are output into the atmosphere.
    Type: Application
    Filed: October 5, 2012
    Publication date: June 20, 2013
    Inventors: John D. Sethian, Matthew Myers, Mathew Wolford, Frank Hegeler