Patents by Inventor Ulf Liedholm

Ulf Liedholm 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).

  • Charging device
    Patent number: 8169196
    Abstract: A method performed by a charging device may include detecting a presence of an external device connected to a secondary side of the charging device and setting a switch on a primary side of the charging device to an off state when a presence of an external device is not detected.
    Type: Grant
    Filed: August 15, 2007
    Date of Patent: May 1, 2012
    Assignee: Sony Mobile Communications AB
    Inventors: Florin Vantu, Ulf Liedholm, Alexander Ambrus
  • CHARGING DEVICE
    Publication number: 20090001938
    Abstract: A method performed by a charging device may include detecting a presence of an external device connected to a secondary side of the charging device and setting a switch on a primary side of the charging device to an off state when a presence of an external device is not detected.
    Type: Application
    Filed: August 15, 2007
    Publication date: January 1, 2009
    Applicant: SONY ERICSSON MOBILE COMMUNICATIONS AB
    Inventors: Florin VANTU, Ulf LIEDHOLM, Alexander AMBRUS