Patents by Inventor Gerda Koschade

Gerda Koschade 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).

  • Process for mesophilic or thermophilic aerobico-enzymic conditioning of liquid organic substances and biomass
    Patent number: 5019267
    Abstract: The invention relates to the conditioning of liquid organic substances and biomass, particularly of municipal sewage sludge, with the help of chelating agents and enzymes, by breaking the organic substance down in an aerobic-conditioning reactor by addition of chelating agents and enzymes, this is discontinued prior to the complete dissolution of the organic matter after a time period of 0.5 to 20 hours. The mixture of substances is then subjected to an open-top non-aerated postreaction phase of 5 to 15 hours during which biogenous flocculation takes place. A solid-liquid separation follows.
    Type: Grant
    Filed: August 18, 1989
    Date of Patent: May 28, 1991
    Assignee: Prowatec GmbH Halle
    Inventors: Friedrich Eberhard, Gottfried Schramm, Ulrich Holesovsky, Peter Richardt, Steffen Ehrig, Karin Jobst, Hans-Jurgen Blobel, Friedrich Kutzsche, Gerda Koschade, Hannelore Friedrich, Rolf Nitzsche