Patents by Inventor Ralf Strässner

Ralf Strässner 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: 8002209
    Abstract: A fragmentation system including a reaction vessel with processing fluid and fragmentation product and a pair of electrodes. Two respective ends of the pair of electrodes are arranged at a distance to each other inside the reaction vessel and can be admitted with pulsed high-voltage to grind the fragmentation product positioned in a reaction zone. The system also including a solid/fluid separation device, a suspension device to keep the fragmentation product continually suspended in the processing fluid, and a transfer device to transfer processing fluid and a first share of the fragmentation product out of the reaction vessel to the solid/fluid separation device. A second share of the fragmentation product returns to the reaction zone. The system includes at least one return-flow line coupled to the solid/fluid separation device and the reaction vessel to empty the processing fluid from the solid/fluid separation device into the reaction vessel.
    Type: Grant
    Filed: July 28, 2004
    Date of Patent: August 23, 2011
    Assignee: Forschungszentrum Karlsruhe GmbH
    Inventors: Wolfgang Frey, Ralf Strässner, Andreas Schormann, Kurt Giron, Harald Giese
  • Patent number: 6761858
    Abstract: In a method and apparatus for processing materials comprising ashes from waste incineration plants and mineral residues to condition them in a short time by washing them and by subjecting them to electrodynamic processes and shock waves generated by high voltage spark discharges, the material is made chemically inert and aged so that it can be used immediately after treatment without harming the environment.
    Type: Grant
    Filed: July 18, 2001
    Date of Patent: July 13, 2004
    Assignee: Forschungszentrum Karlsruhe GmbH
    Inventors: Christoph Schultheiss, Christel Adelheim, Britta Bergfeldt, Ralf Straessner, Volker Neubert, Helmul Denning, Bernard Kotte
  • Publication number: 20030206850
    Abstract: In a method and apparatus for processing materials comprising ashes from waste incineration plants and mineral residues to condition them in a short time by washing them and by subjecting them to electrodynamic processes and shock waves generated by high voltage spark discharges, the material is made chemically inert and aged so that it can be used immediately after treatment without harming the environment.
    Type: Application
    Filed: July 18, 2001
    Publication date: November 6, 2003
    Inventors: Christoph Schultheiss, Christel Adelheim, Britta Bergfeldt, Ralf Straessner, Volker Neuben, Helmul Dinnig, Bernard Kotte