Patents by Inventor Gareth E. Guest

Gareth E. Guest 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).

  • Plasma vacuum pump
    Patent number: 6559601
    Abstract: A plasma pump and method for pumping ions from a first to second region, the pump including a partition member having a through opening defining a plurality of conduits (30); a group of magnets (24) to provide magnetic forces that extend to the conduits; and a plurality of electric potential sources (14) for creating electrostatic fields which accelerate ions from the conduits to the second region.
    Type: Grant
    Filed: July 2, 2001
    Date of Patent: May 6, 2003
    Assignees: Tokyo Electron Limited
    Inventors: Wayne L. Johnson, Raphael A. Dandl, Gareth E. Guest