Patents by Inventor J. Bradley Vujnovic

J. Bradley Vujnovic 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).

  • Apparatus and method for the beneficiation of ore and coal with the aid of ultrasound
    Patent number: 5577669
    Abstract: An apparatus for treating a slurry with ultrasound to improve separation based upon specific gravity comprises a plurality of modular conduit units having substantially vertical walls defining a flow space through which a slurry may be pumped. Each modular conduit unit has mounted thereon ultrasound transducers for transmitting ultrasound energy into the slurry being pumped through the modular conduit unit and means for exciting the ultrasound transducers in a frequency range of 60 to 100 kHz.
    Type: Grant
    Filed: February 15, 1995
    Date of Patent: November 26, 1996
    Inventor: J. Bradley Vujnovic