Patents by Inventor DAVID K. JAMISON

DAVID K. JAMISON 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).

  • Circuits and methods for impedance determination using active measurement cancelation
    Patent number: 9519031
    Abstract: A delta signal and opposite delta signal are generated such that a sum of the two signals is substantially zero. The delta signal is applied across a first set of electrochemical cells. The opposite delta signal is applied across a second set of electrochemical cells series connected to the first set. A first held voltage is established as the voltage across the first set. A second held voltage is established as the voltage across the second set. A first delta signal is added to the first held voltage and applied to the first set. A second delta signal is added to the second held voltage and applied to the second set. The current responses due to the added delta voltages travel only into the set associated with its delta voltage. The delta voltages and the current responses are used to calculate the impedances of their associated cells.
    Type: Grant
    Filed: December 16, 2013
    Date of Patent: December 13, 2016
    Assignee: Battelle Energy Alliance, LLC
    Inventor: David K. Jamison
  • CIRCUITS AND METHODS FOR IMPEDANCE DETERMINATION USING ACTIVE MEASUREMENT CANCELATION
    Publication number: 20150168500
    Abstract: A delta signal and opposite delta signal are generated such that a sum of the two signals is substantially zero. The delta signal is applied across a first set of electrochemical cells. The opposite delta signal is applied across a second set of electrochemical cells series connected to the first set. A first held voltage is established as the voltage across the first set. A second held voltage is established as the voltage across the second set. A first delta signal is added to the first held voltage and applied to the first set. A second delta signal is added to the second held voltage and applied to the second set. The current responses due to the added delta voltages travel only into the set associated with its delta voltage. The delta voltages and the current responses are used to calculate the impedances of their associated cells.
    Type: Application
    Filed: December 16, 2013
    Publication date: June 18, 2015
    Applicant: Battelle Energy Alliance, LLC
    Inventor: DAVID K. JAMISON