Patents by Inventor Dumitru Dan Raceu

Dumitru Dan Raceu 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).

  • Patent number: 6603672
    Abstract: A power conversion system 10 which comprises a controller 12 and conversion assemblies 46, 48 which selectively rectify and invert an electrical signal. Conversion assemblies 46, 48 respectively comprise a plurality of integrated gate bipolar transistor assemblies. The power conversion system 10 is effective to convert DC current to AC current, convert AC current to DC current, and to control the output frequency of a received electrical signal to a conventional operating range.
    Type: Grant
    Filed: November 10, 2000
    Date of Patent: August 5, 2003
    Assignee: Ballard Power Systems Corporation
    Inventors: Doug D. Deng, Dumitru Dan Raceu, Kent Michael Harmon