Patents by Inventor Steve Roy

Steve Roy 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).

  • Controller system for a DC power supply
    Patent number: 5986434
    Abstract: The DC power supply system has a separate controller connected to the AC power rectifiers via a control bus. Improved control features and modularity are achieved.
    Type: Grant
    Filed: September 25, 1997
    Date of Patent: November 16, 1999
    Assignee: Astec International Limited
    Inventors: Steve Roy, Louis Duguay