Patents by Inventor Rolf Beerwerth

Rolf Beerwerth 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).

  • Circuit for charging rechargeable batteries having a combined charging and overvoltage protection circuit
    Patent number: 6762589
    Abstract: A rechargeable battery unit, which is intended for supplying a voltage to an electrical appliance, is charged by an external charging voltage by a charging circuit. The charging circuit is configured such that a charge regulator controls the charging process, and a monitoring unit monitors the voltage that is applied to the rechargeable battery unit and causes the charging regulator to limit the voltage that is applied to the rechargeable battery unit if any over-voltage occurs.
    Type: Grant
    Filed: May 30, 2003
    Date of Patent: July 13, 2004
    Assignee: Infineon Technologies AG
    Inventors: Rolf Beerwerth, Christian Kranz, Hans-Gerd Kirchhoff
  • Circuit for charging rechargeable batteries
    Publication number: 20030218446
    Abstract: A rechargeable battery unit, which is intended for supplying a voltage to an electrical appliance, is charged by an external charging voltage by a charging circuit. The charging circuit is configured such that a charge regulator controls the charging process, and a monitoring unit monitors the voltage that is applied to the rechargeable battery unit and causes the charging regulator to limit the voltage that is applied to the rechargeable battery unit if any over-voltage occurs.
    Type: Application
    Filed: May 30, 2003
    Publication date: November 27, 2003
    Inventors: Rolf Beerwerth, Christian Kranz, Hans-Gerd Kirchhoff