Patents by Inventor Juraj Csefalvay

Juraj Csefalvay 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).

  • Activated sludge method and device for the treatment of effluent with nitrogen and phosphorus removal
    Patent number: 6773596
    Abstract: A device and method for the treatment of effluent with activated sludge in suspension, for the removal of nitrogen and phosphorus and for simultaneous sludge stabilization. An activated chamber has a fermentation zone, a denitrification zone and a nitrification zone, whereby the fermentation zone and the denitrification zone in the activated chamber, are separated by scum boards and overflow barriers in the direction of flow, providing ascending flow and descending flow chambers in the anaerobic fermentation zone and the denitrification zone.
    Type: Grant
    Filed: April 30, 2003
    Date of Patent: August 10, 2004
    Inventors: Ladislav Penzes, Juraj Csefalvay
  • Activated sludge method and device for the treatment of effluent with nitrogen and phosphorus removal
    Publication number: 20030183572
    Abstract: The invention relates to a device and method for the treatment of effluent with activated sludge in suspension, for the removal of nitrogen and phosphorus and for simultaneous sludge stabilisation. An activated chamber (5, 6) is provided with a fermentation zone (5), a denitrification zone (6) and a nitrification zone (7), whereby the fermentation zone (5) and the denitrification zone (6) in the activated chamber (5, 6), are separated by scum boards (3) and overflow barriers (4) in the direction of flow, giving rise to ascending flow and descending flow chambers in the anaerobic fermentation zone (5) and the denitrification zone (6).
    Type: Application
    Filed: April 30, 2003
    Publication date: October 2, 2003
    Inventors: Ladislav Penzes, Juraj Csefalvay
  • Rectangular waste water purifying device
    Patent number: D830498
    Type: Grant
    Filed: November 18, 2016
    Date of Patent: October 9, 2018
    Inventor: Juraj Cséfalvay
  • Oval waste water purifying device
    Patent number: D830499
    Type: Grant
    Filed: November 18, 2016
    Date of Patent: October 9, 2018
    Inventor: Juraj Cséfalvay