Patents by Inventor Andrew M. ARMSTRONG

Andrew M. ARMSTRONG 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).

  • High Voltage Gallium Nitride Vertical PN Diode
    Publication number: 20220165888
    Abstract: A vertical gallium nitride (GaN) PN diode uses epitaxial growth of a thick drift region with a very low carrier concentration and a carefully designed multi-zone junction termination extension to achieve high voltage blocking and high-power efficiency. An exemplary large area (1 mm2) diode had a forward pulsed current of 3.5 A, an 8.3 m?-cm2 specific on-resistance, and a 5.3 kV reverse breakdown. A smaller area diode (0.063 mm2) was capable of 6.4 kV breakdown with a specific on-resistance of 10.2 m?-cm2, when accounting for current spreading through the drift region at a 45° angle.
    Type: Application
    Filed: January 10, 2022
    Publication date: May 26, 2022
    Inventors: Luke Yates, Brendan P. Gunning, Mary H. Crawford, Jeffrey Steinfeldt, Michael L. Smith, Vincent M. Abate, Jeramy R. Dickerson, Andrew M. Armstrong, Andrew Binder, Andrew A. Allerman, Robert J. Kaplar, Jack David Flicker, Gregory W. Pickrell
  • Membrane electrode assembly
    Patent number: 10700372
    Abstract: Membrane electrode assembly comprising oxygen evolution reaction catalyst disposed in gas distribution layer (100, 700) or between gas distribution layer (100, 700 and gas dispersion layer (200, 600). Membrane electrode assemblies described herein are useful, for example, in electrochemical devices such as a fuel cell.
    Type: Grant
    Filed: December 9, 2015
    Date of Patent: June 30, 2020
    Assignee: 3M Innovative Properties Company
    Inventors: Gregory M. Haugen, Ljiljana L. Atanasoska, Radoslav Atanasoski, Andrew T. Haug, Dennis F. Van Der Vliet, Jimmy L. Wong, Andrew M. Armstrong
  • MEMBRANE ELECTRODE ASSEMBLY
    Publication number: 20170294669
    Abstract: Membrane electrode assembly comprising oxygen evolution reaction catalyst disposed in gas distribution layer (100, 700) or between gas distribution layer (100, 700 and gas dispersion layer (200, 600). Membrane electrode assemblies described herein are useful, for example, in electrochemical devices such as a fuel cell.
    Type: Application
    Filed: December 9, 2015
    Publication date: October 12, 2017
    Inventors: Gregory M. Haugen, Ljiljana L. Atanasoska, Radoslav Atanasoski, Andrew T. Haug, Dennis F. Van Der Vliet, Jimmy L. Wong, Andrew M. Armstrong
  • CATALYST ELECTRODES AND METHOD OF MAKING IT
    Publication number: 20160079604
    Abstract: Fuel cell anodes comprising (a) a catalyst comprising Pt, (b) an oxygen evolution reaction catalyst, and (c) at least one of Au, a refractory metal (e.g., at least one of Hf, Nb, Os, Re, Rh, Ta, Ti, W, or Zr), a refractory metal oxide, a refractory metal boride, a refractory metal carbide, a refractory metal nitride, or a refractory metal silicide. The fuel cell anodes are useful in fuel cells.
    Type: Application
    Filed: April 21, 2014
    Publication date: March 17, 2016
    Applicant: 3M Company
    Inventors: Radoslav ATANASOSKI, Ljiljana L. ATANASOSKA, Gregory M. HAUGEN, Andrew M. ARMSTRONG, Dennis F. VAN DER VLIET, Jimmy L. WONG