Patents by Inventor Dieter Bieniek

Dieter Bieniek 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).

  • Method of decontaminating solid materials contaminated with heavy metals
    Patent number: 5849567
    Abstract: In a method for reducing the content of heavy metals of solid materials, particularly of soils, a 0.1-10% aqueous solution of chemically modified biomasses of waste and residue materials is applied to the solid material whereby the heavy metals are released and extracted from the solid material. The biomass solution residues remaining in the solid material after the heavy metal extraction procedure is rapidly biodegradable so that no objectionable traces remain in the solid materials or soils.
    Type: Grant
    Filed: April 28, 1997
    Date of Patent: December 15, 1998
    Assignee: GSF-Forschungszentrum fur Umwelt und Gesundheit GmbH
    Inventors: Klaus Fischer, Hans-Peter Bipp, Peter Riemschneider, Antonius Kettrup, Dieter Bieniek