Patents by Inventor Andreas Wramdemark

Andreas Wramdemark 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 device for generating voltage peaks in an electrostatic precipitator
    Patent number: 6373723
    Abstract: The method of invention relates to a method and device for generating voltage peaks in an electrostatic precipitator via generation of current pulse, where each voltage peak is generated by a group of current pulses. A device according to the invention comprises a first and a second means for converting alternating current to direct current, and also so first means for converting direct current to alternating current, and the first means for converting direct current to alternating current comprises a resonance converter.
    Type: Grant
    Filed: December 11, 2000
    Date of Patent: April 16, 2002
    Assignee: Kraftelektronik AB
    Inventors: Bernt Wallgren, Andreas Wramdemark