Patents by Inventor Craig Stephen Roberts

Craig Stephen Roberts 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).

  • Heating element
    Patent number: D509291
    Type: Grant
    Filed: September 18, 2003
    Date of Patent: September 6, 2005
    Assignee: Irwin Industrial Tools Company
    Inventors: Ian Westad Cunningham, Craig Stephen Roberts
  • Heating element
    Patent number: D537154
    Type: Grant
    Filed: April 14, 2005
    Date of Patent: February 20, 2007
    Assignee: Irwin Industrial Tool Company
    Inventors: Ian Westad Cunningham, Craig Stephen Roberts