Patents by Inventor Siegfried Kiese

Siegfried Kiese 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 the biological treatment of waste water
    Patent number: 4582607
    Abstract: A method is disclosed for the biological aerobic purification of waste waters wherein a temperature from 30.degree. to 60.degree. C. is maintained in a first process stage and a temperature from 20.degree. to 40.degree. C. is maintained in a second process stage, with the temperature in the first process stage always being higher than the temperature in the second process stage and wherein a part of the activated sludge of the second process stage, after being seperated, is returned to the first process stage. The process provides a high decomposition output and produces an activated sludge which exhibits good sedimentation behavior.
    Type: Grant
    Filed: March 1, 1985
    Date of Patent: April 15, 1986
    Assignee: Fried. Krupp Gesellschaft mit beschrankter Haftung
    Inventors: Siegfried Kiese, Ulrich Scheffler