Patents by Inventor Joshua Rovey

Joshua Rovey 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).

  • Gas-fed hollow cathode keeper and method of operating same
    Patent number: 7791260
    Abstract: A gas-fed hollow cathode keeper can reduce ion bombardment erosion by expelling gas through the keeper faceplate. The expelled gas effectively creates a high-pressure “shield” around the keeper such that bombarding ions suffer energy-reducing collisions before impacting the keeper. If the bombarding ion energy is reduced enough, the erosion is eliminated since sputtering is a threshold phenomenon.
    Type: Grant
    Filed: July 26, 2007
    Date of Patent: September 7, 2010
    Assignee: The Regents of The University of Michigan
    Inventors: Alec Gallimore, Joshua Rovey
  • GAS-FED HOLLOW CATHODE KEEPER AND METHOD OF OPERATING SAME
    Publication number: 20080047256
    Abstract: A gas-fed hollow cathode keeper can reduce ion bombardment erosion by expelling gas through the keeper faceplate. The expelled gas effectively creates a high-pressure “shield” around the keeper such that bombarding ions suffer energy-reducing collisions before impacting the keeper. If the bombarding ion energy is reduced enough, the erosion is eliminated since sputtering is a threshold phenomenon.
    Type: Application
    Filed: July 26, 2007
    Publication date: February 28, 2008
    Inventors: Alec Gallimore, Joshua Rovey