Patents by Inventor Birgit Lisa Sorgenfrei

Birgit Lisa Sorgenfrei 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 and method to control battery current during rolling stop-start events
    Patent number: 10059328
    Abstract: A vehicle includes an engine and a controller configured to autostop and autostart the engine. Engine autostops are conditioned on a vehicle speed condition. In addition, engine autostops are conditioned on a battery current threshold that changes as the speed of the vehicle changes.
    Type: Grant
    Filed: August 11, 2016
    Date of Patent: August 28, 2018
    Assignee: Ford Global Technologies, LLC
    Inventors: Hafiz Shafeek Khafagy, Mark Douglas Malone, Birgit Lisa Sorgenfrei, Essam Mohamed
  • SYSTEM AND METHOD TO CONTROL BATTERY CURRENT DURING ROLLING STOP-START EVENTS
    Publication number: 20180043878
    Abstract: A vehicle includes an engine and a controller configured to autostop and autostart the engine. Engine autostops are conditioned on a vehicle speed condition. In addition, engine autostops are conditioned on a battery current threshold that changes as the speed of the vehicle changes.
    Type: Application
    Filed: August 11, 2016
    Publication date: February 15, 2018
    Inventors: Hafiz Shafeek KHAFAGY, Mark Douglas MALONE, Birgit Lisa SORGENFREI, Essam MOHAMED
  • System for disabling display illumination
    Patent number: 6385516
    Abstract: A system for disabling display illumination includes an electronic device, such as a radio, navigation system or entertainment device having a graphical display that may be covered with a door for enhancing vehicle interior appearance. To allow the graphical display to be read during night time driving conditions, the graphical display includes some form of graphical back lighting. A transceiver is coupled to the electronic device and generates an infrared signal for inter-module communication. When the door is closed, this infrared signal is reflected back to the electronic device indicating that the door is closed. Using this reflected signal, the graphical back lighting may be disabled to eliminate light leaks and reduce heat buildup.
    Type: Grant
    Filed: March 9, 2001
    Date of Patent: May 7, 2002
    Assignee: Visteon Global Technologies, Inc.
    Inventors: Gregory John Milne, Gregory H. Williams, Birgit Lisa Sorgenfrei