Patents by Inventor Laurence P. Long

Laurence P. Long 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).

  • Ultracapacitor balancing circuit
    Publication number: 20030214267
    Abstract: The present invention provides an energy storage system comprising at least one voltage source, and a string of series connected cells, wherein each of the cells is connected to a circuit, wherein the circuit comprises at least one voltage reference, at least one voltage divider, which sets a trip point, and at least one operational amplifier, wherein at least one operational amplifier receives a first input from voltage reference and a second input from voltage divider and shunts an output through a power dissipative device when voltage of a cell exceeds said trip point.
    Type: Application
    Filed: May 20, 2003
    Publication date: November 20, 2003
    Inventor: Laurence P. Long