Patents by Inventor Arun K. Pasrija

Arun K. Pasrija 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 and apparatus for predicting battery reserve time to a specified end-voltage
    Patent number: 5371682
    Abstract: A reserve time predictive system for predicting the capacity of a discharging battery monitors the instant voltage of a battery, its discharge rate and a slope of the voltage vs ampere-hours removed from the battery. The discharge profile of battery voltage vs ampere-hours removed, and the difference between the present and end voltage and the slope of voltage vs ampere-hours remaining is utilized to determine a prediction of reserve time remaining until the battery discharges to the specified end voltage. A combination of remaining reserve time and the measurement of capacity removed also determines the available capacity of the battery from a fully charged state. This information is used as historical data for use in subsequent predictions of battery capacity.
    Type: Grant
    Filed: February 4, 1993
    Date of Patent: December 6, 1994
    Assignee: AT&T Corp.
    Inventors: David E. Levine, Arun K. Pasrija