Patents by Inventor Sarandis Kalogeropoulus

Sarandis Kalogeropoulus 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).

  • Voltage/current regulator and method for battery charging
    Patent number: 6229283
    Abstract: A voltage/current regulator regulates charging of a rechargeable battery in a portable apparatus that includes a transistor and a controller means coupled to the transistor for controlling the charging current to the battery. The controller determines the power dissipation in the transistor of the regulator. If the power dissipation is above a maximum allowed power dissipation, the controller decreases the charging current by a particular current step. Otherwise, the controller determines if the power dissipation will exceed the maximum allowed power dissipation if the charging current is increased by the current step. If not, the controller increases the charging current by the current step.
    Type: Grant
    Filed: April 6, 2000
    Date of Patent: May 8, 2001
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Sarandis Kalogeropoulus, Johan Mercke, Heino Wendelrup, Magnus Hansson, Rickard Andersson, Charles Forsberg