Patents by Inventor Stephan Prechtl

Stephan Prechtl 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).

  • Reactor and method for anaerobic wastewater treatment
    Patent number: 7485228
    Abstract: A reactor (10) for anaerobic waste water treatment is designed as a loop-type column reactor comprising a central flow channel (20). In the annular space (40) between the central flow channel (20) and the reactor wall, there are positioned carrier elements (50) for immobilizing microorganisms, with flow passages being provided between adjacent carrier elements (50). The lower portion of the reactor (30), below the carrier elements, is designed as a space intended to receive waste water having microorganisms floating therein during operation of the reactor (10). During operation, there are provided both floating microorganisms and microorganisms that are immobilized on the carrier elements. The waste water to be treated flows centrally downward and up again along the carrier elements (40), with the flow being generated in part by the gas development of the microorganisms.
    Type: Grant
    Filed: October 29, 2004
    Date of Patent: February 3, 2009
    Assignees: Atz-Evns, Herding GmbH
    Inventors: Walter Herding, Urs Herding, Kurt Palz, Rainer Thurauf, Stephan Prechtl, Rainer Scholz, Ralf Schneider, Johann Winter, Rolf Jung
  • Reactor and Method for Anaerobic Wastewater Treatment
    Publication number: 20070251880
    Abstract: A reactor (10) for anaerobic waste water treatment is designed as a loop-type column reactor comprising a central flow channel (20). In the annular space (40) between the central flow channel (20) and the reactor wall, there are positioned carrier elements (50) for immobilizing microorganisms, with flow passages being provided between adjacent carrier elements (50). The lower portion of the reactor (30), below the carrier elements, is designed as a space intended to receive waste water having microorganisms floating therein during operation of the reactor (10). During operation, there are provided both floating microorganisms and microorganisms that are immobilized on the carrier elements. The waste water to be treated flows centrally downward and up again along the carrier elements (40), with the flow being generated in part by the gas development of the microorganisms.
    Type: Application
    Filed: October 29, 2004
    Publication date: November 1, 2007
    Inventors: Walter Herding, Urs Herding, Kurt Palz, Rainer Thurauf, Stephan Prechtl, Rainer Scholz, Ralf Schneider, Winter Johann, Rolf Jung