Patents by Inventor Roger Huggins

Roger Huggins 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).

  • System for authenticating modules installed in machines, such as printing apparatus
    Patent number: 7321737
    Abstract: A method of operating a machine, such as a digital printing apparatus, involves installing into the machine a module having a first random number generator associated therewith, and, incidental to installing the module, initiating a second random number generator associated with the machine. The series of random numbers from each generator are checked against each other over time.
    Type: Grant
    Filed: June 30, 2005
    Date of Patent: January 22, 2008
    Assignee: Xerox Corporation
    Inventors: Kevin Swann, Roger Huggins
  • System for authenticating modules installed in machines, such as printing apparatus
    Publication number: 20070003293
    Abstract: A method of operating a machine, such as a digital printing apparatus, comprises installing into the machine a module having a first random number generator associated therewith, and, incidental to installing the module, initiating a second random number generator associated with the machine. The series of random numbers from each generator are checked against each other over time.
    Type: Application
    Filed: June 30, 2005
    Publication date: January 4, 2007
    Inventors: Kevin Swann, Roger Huggins