Patents by Inventor Robert Ellefson

Robert Ellefson 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).

  • Replaceable anode liner for ion source
    Publication number: 20050258374
    Abstract: A releasable anode liner that is fitted within the interior of the anode of an ion source. The cover permits electrons to be projected into the anode wherein any insulating deposits adhere to the interior of the anode liner, thereby increasing the effective life of the anode without premature replacement or repair.
    Type: Application
    Filed: May 20, 2004
    Publication date: November 24, 2005
    Applicant: Inficon, Inc.
    Inventors: Robert Ellefson, Louis Frees