Patents by Inventor Douglas James Arthur Burrell

Douglas James Arthur Burrell 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).

  • Publication number: 20080231601
    Abstract: An input device for a graphical user interface in a handheld mobile communications device. The navigation system comprises a trackball for generating trackball input when the trackball is actuated, a detector, proximate to and cooperating with the trackball, for generating detector input when the detector is actuated, and a processor to convert the trackball input and the detection input into a composite input signal for controlling a function in the graphical user interface.
    Type: Application
    Filed: March 22, 2007
    Publication date: September 25, 2008
    Applicant: RESEARCH IN MOTION LIMITED
    Inventors: Steven H. Fyke, Kevin Howard Orr, Douglas James Arthur Burrell