Patents by Inventor Regina Mariko Sullivan

Regina Mariko Sullivan 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).

  • Emitter structures for enhanced thermionic emission
    Patent number: 11094493
    Abstract: In one embodiment, a system includes a cathode and a thermionic emitter installed at least partially within the cathode tube of the cathode. The thermionic emitter is in a shape of a hollow cylinder. The hollow cylinder includes an outer surface and an unsmooth inner surface. The outer surface is configured to contact an inner surface of the cathode tube. The unsmooth inner surface includes a plurality of structures that provide an increase in surface area over a smooth surface.
    Type: Grant
    Filed: August 1, 2019
    Date of Patent: August 17, 2021
    Assignee: Lockheed Martin Corporation
    Inventors: Frans Hendrik Ebersohn, Randall James Sovereign, Jonathon Robert Heinrich, Regina Mariko Sullivan
  • Emitter Structures for Enhanced Thermionic Emission
    Publication number: 20210035765
    Abstract: In one embodiment, a system includes a cathode and a thermionic emitter installed at least partially within the cathode tube of the cathode. The thermionic emitter is in a shape of a hollow cylinder. The hollow cylinder includes an outer surface and an unsmooth inner surface. The outer surface is configured to contact an inner surface of the cathode tube. The unsmooth inner surface includes a plurality of structures that provide an increase in surface area over a smooth surface.
    Type: Application
    Filed: August 1, 2019
    Publication date: February 4, 2021
    Inventors: Frans Hendrik Ebersohn, Randall James Sovereign, Jonathon Robert Heinrich, Regina Mariko Sullivan
  • Multi-apertured conduction heater
    Patent number: 10741351
    Abstract: In one embodiment, a system includes a thermionic emitter and a heater at least partially surrounding the thermionic emitter. The heater is configured to heat the thermionic emitter. The heater includes a first end, a second end opposite the first end, and a plurality of hollow insulating tubes that each run from the first end to the second end. The heater also includes a heater wire that runs through each of the hollow insulating tubes. The heater wire is configured to be resistively heated by an electrical current passed through the heater wire.
    Type: Grant
    Filed: August 1, 2019
    Date of Patent: August 11, 2020
    Assignee: Lockheed Martin Corporation
    Inventors: Frans Hendrik Ebersohn, Randall James Sovereign, Regina Mariko Sullivan