Patents by Inventor Patrick E. Tonies

Patrick E. Tonies 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).

  • Electron and laser beam welding apparatus
    Patent number: 5517059
    Abstract: A method and apparatus for electron or laser beam welding of semiconductor subassemblies to larger terminal members, without exposing semiconductor chips in such subassemblies to detrimental welding "flash".
    Type: Grant
    Filed: April 26, 1994
    Date of Patent: May 14, 1996
    Assignee: Delco Electronics Corp.
    Inventors: Charles T. Eytcheson, Donald E. Lake, deceased, Patrick E. Tonies