Patents by Inventor Anja Böttcher

Anja Böttcher 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).

  • Illumination device for vehicles and method for controlling an illumination device for vehicles
    Patent number: 7385495
    Abstract: The present invention relates to an illumination device for vehicles with at least light-emitting diode (3) and a light control unit (1), wherein the light control unit (1) is connected to the at least one light-emitting diode (3) and a pulse-width modulated clock signal (PWM) can be generated and transmitted to the at least one light-emitting diode (3) with the light control unit (1). The illumination device for vehicles according to the invention comprises a circuit (2) arranged between the light control unit (1) and the at least one light-emitting diode (3), with which, depending on the control signal (S), the pulse-width modulated clock signal (PWM) can be fed via different resistors (R1, R2, R3) to the at least one light-emitting diode (3). The present invention further relates to a method for controlling an illumination device for vehicles with at least one light-emitting diode (3) and a light control unit (1).
    Type: Grant
    Filed: October 17, 2005
    Date of Patent: June 10, 2008
    Assignee: Volkswagen AG
    Inventors: Christoph Buhr, Anja Böttcher