Patents by Inventor Milton D. Ribelro

Milton D. Ribelro 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).

  • Method for charging a battery using a constant current adapted to provide a constant rate of change of open circuit battery voltage
    Patent number: 7528571
    Abstract: A method for charging a battery is disclosed, wherein a constant current charging current is periodically adjusted as needed such that the change in battery voltage increases approximately linearly during the charging period. In some embodiments the charging is in three phases. An optional first phase charges with a low current until the battery voltages rises to a certain minimum. During a second phase a constant current is provided while the battery voltage is monitored. The second phase constant current is periodically increased if the rate of change of battery voltage is less than a predetermined value and is decreased if the rate of change of battery voltage is more than the predetermined value. When the battery voltage attains a predetermined value, a third phase begins wherein a constant voltage is applied to the battery while the battery current draw is periodically monitored.
    Type: Grant
    Filed: March 21, 2007
    Date of Patent: May 5, 2009
    Assignee: Exar Corporation
    Inventors: Kent Kernahan, Milton D. Ribelro, Dongsheng Zhou, Larry A. Klein
  • METHOD FOR CHARGING A BATTERY USING A CONSTANT CURRENT ADAPTED TO PROVIDE A CONSTANT RATE OF CHANGE OF OPEN CIRCUIT BATTERY VOLTAGE
    Publication number: 20080191666
    Abstract: A method for charging a battery is disclosed, wherein a constant current charging current is periodically adjusted as needed such that the change in battery voltage increases approximately linearly during the charging period. In some embodiments the charging is in three phases. An optional first phase charges with a low current until the battery voltages rises to a certain minimum. During a second phase a constant current is provided while the battery voltage is monitored. The second phase constant current is periodically increased if the rate of change of battery voltage is less than a predetermined value and is decreased if the rate of change of battery voltage is more than the predetermined value. When the battery voltage attains a predetermined value, a third phase begins wherein a constant voltage is applied to the battery while the battery current draw is periodically monitored.
    Type: Application
    Filed: March 21, 2007
    Publication date: August 14, 2008
    Applicant: FYRESTORM, INC.
    Inventors: Kent Kernahan, Milton D. Ribelro, Dongsheng Zhou, Larry A. Klein