Patents by Inventor Nick G. Selva

Nick G. Selva 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).

  • Ion generation chamber
    Patent number: 6576909
    Abstract: An ion generator chamber, for an implantation apparatus, having its interior walls surfaces knurled or roughened so that any of the materials used in the chamber cannot deposit onto the interior wall surfaces in a size sufficiently large enough to adversely affect the operation of the chamber, if the deposits peel off the interior walls of the chamber. By limiting the size of any deposits on interior chamber walls, the invention extends the average life of the filaments used in the chamber as well as extending the average time between any necessary cleaning of the inner chamber walls thereby extending the operating life of the chamber.
    Type: Grant
    Filed: February 28, 2001
    Date of Patent: June 10, 2003
    Assignee: International Business Machines Corp.
    Inventors: Gary A. Donaldson, Donald W. D. Rakowski, Nick G. Selva
  • Ion generation chamber
    Publication number: 20020117637
    Abstract: An ion generator chamber, for an implantation apparatus, having its interior walls surfaces knurled or roughened so that any of the materials used in the chamber cannot deposit onto the interior wall surfaces in a size sufficiently large enough to adversely affect the operation of the chamber, if the deposits peel off the interior walls of the chamber. By limiting the size of any deposits on interior chamber walls, the invention extends the average life of the filaments used in the chamber as well as extending the average time between any necessary cleaning of the inner chamber walls thereby extending the operating life of the chamber.
    Type: Application
    Filed: February 28, 2001
    Publication date: August 29, 2002
    Applicant: International Business machines Corporation
    Inventors: Gary A. Donaldson, Donald W. D. Rakowski, Nick G. Selva