Patents by Inventor Frank Gustavsson

Frank Gustavsson 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).

  • Individual heating element power control for a furnace
    Patent number: 5870423
    Abstract: During a heating process in a three-phase, electric furnace, power can be controlled by dividing the heating process into intervals and then controlling the average power generated during each of these intervals, and by individually controlling the power generated by each phase. The latter is accomplished without requiring access to a neutral wire.
    Type: Grant
    Filed: November 6, 1996
    Date of Patent: February 9, 1999
    Assignee: Sandvik AB
    Inventor: Frank Gustavsson