Patents by Inventor Rolf-Dieter Henkler

Rolf-Dieter Henkler 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).

  • Biotechnological purification of soil and water containing heavy metals
    Patent number: 5968359
    Abstract: In a method of cleaning up heavy metal-laden waters and soils, conditions are established in the soils and waters to be treated so that the microorganism present there will form hydrogen sulfide, and optionally apathogenic facultative anaerobes that are tolerant of heavy metals are added to produce hydrogen sulfide, and the hydrogen sulfide formed by microbiological action is allowed to react with the heavy metals to form metal sulfides.
    Type: Grant
    Filed: October 27, 1997
    Date of Patent: October 19, 1999
    Inventors: Roland Krahn, Rolf-Dieter Henkler, Walter Ensslin, Ulli Bartsch