Patents by Inventor Timothy Daniel Dunn

Timothy Daniel Dunn 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).

  • Lighting apparatus and method for controlling brightness and color location thereof
    Patent number: 7443104
    Abstract: A lighting apparatus emitting polychromatic light comprising light of at least two light-channels with different colors, wherein each light-channel is controlled by one modified pulse-width-modulated signal (modified PWM-signal), and each modified PWM-signal results from the modulation of one color-pulse-width-modulated signal (color-PWM-signal) with an intensity-pulse-width-modulated signal (intensity-PWM-signal) in order to control the brightness and color location of the polychromatic light.
    Type: Grant
    Filed: July 27, 2005
    Date of Patent: October 28, 2008
    Assignee: Osram Opto Semiconductors GmbH
    Inventors: Michel Zwanenburg, Timothy Daniel Dunn