Patents by Inventor Bert Karlsson

Bert Karlsson 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).

  • Converter equipment
    Patent number: 6016262
    Abstract: Converter equipment has two double converters (SR1, SR2), the ac terminals of which are connected to separate secondary windings (T11, T12) of a transformer (T1) and the dc terminals of which are connected to separate direct-voltage networks (LN1, LN2). Each double converter has a rectifier bridge (LR1, LR2) and an inverter bridge (VR1, VR2). Each secondary winding is connected to an inverter bridge in one double converter and to a rectifier bridge in the other double converter.
    Type: Grant
    Filed: September 3, 1998
    Date of Patent: January 18, 2000
    Assignee: DaimlerChrysler AG
    Inventor: Bert Karlsson