Patents by Inventor Petrus Evers

Petrus Evers 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 calibrating a rechargeable battery
    Patent number: 6630814
    Abstract: Method and apparatus for calibrating a rechargeable battery for mobile telephones and other electronic devices. Calibration is accomplished during a process of completely charging the battery by determining the total amount of charge accepted by the battery during the charging process, and providing a value of total charge capacity of the battery based, at least in part, on the total amount of charge accepted by the battery. The total charge capacity of the battery is used to calculate remaining battery capacity and to predict the remaining operational time of the device. Alternative calibration procedures are provided if the battery is not completely discharged before charging or if the battery is not fully charged by the charging process. The calibration procedures of the invention require no interaction from a user (other than his initiating the normal charging process), and typically permits a calibration to be carried out notwithstanding varying usage habits of different users.
    Type: Grant
    Filed: May 16, 2001
    Date of Patent: October 7, 2003
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Kristoffer Ptasinski, Charles Forsberg, Sarandis Kalogeropoulos, Rickard Andersson, Petrus Evers, Anders Langberg, David Demers, Jeremy Carlson, Derek Liddle
  • Battery capacity calibration
    Publication number: 20020167293
    Abstract: Method and apparatus for calibrating a rechargeable battery for mobile telephones and other electronic devices. Calibration is accomplished during a process of completely charging the battery by determining the total amount of charge accepted by the battery during the charging process, and providing a value of total charge capacity of the battery based, at least in part, on the total amount of charge accepted by the battery. The total charge capacity of the battery is used to calculate remaining battery capacity and to predict the remaining operational time of the device. Alternative calibration procedures are provided if the battery is not completely discharged before charging or if the battery is not fully charged by the charging process. The calibration procedures of the invention require no interaction from a user (other than his initiating the normal charging process), and typically permits a calibration to be carried out notwithstanding varying usage habits of different users.
    Type: Application
    Filed: May 16, 2001
    Publication date: November 14, 2002
    Inventors: Kristoffer Ptasinski, Charles Forsberg, Sarandis Kalogeropoulos, Rickard Andersson, Petrus Evers, Anders Langberg, David Demers, Jeremy Carlson, Derek Liddle