Patents by Inventor Edward George Marquette

Edward George Marquette 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).

  • Patent number: 11917737
    Abstract: A circuit for sharing current between parallel LEDs or parallel strings of LEDs, and a method of use of the same, are disclosed herein. The circuit for sharing current between parallel LED pathways can include a first LED pathway, a first transistor coupled to the first set of LEDs and that can control a first current through the first set of LEDs, and a first measurement node having a first sensed voltage. The circuit can include a second LED pathway, a second transistor coupled to the second set of LEDs and that can control a second current through the second set of LEDs, and a second measurement node having a second sensed voltage. The circuit includes a first differential amplifier and a second differential amplifier, each of which can compare sensed voltage and can apply a voltage to a gate of one of the first and second transistors.
    Type: Grant
    Filed: July 29, 2022
    Date of Patent: February 27, 2024
    Assignee: Bio-Rad Laboratories, Inc.
    Inventor: Edward George Marquette