Patents by Inventor Walter Haltrich

Walter Haltrich 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).

  • Oxidative treatment of wastewaters
    Patent number: 4696749
    Abstract: Wastewaters are subjected to an oxidative treatment with a carbon-containing catalyst and an oxidizing agent by a process in which the carbon carrier used, e.g. graphite, coke or active carbon, is subjected to anodic oxidation in an aqueous mineral acid and then doped with molybdenum(Vl) and/or tungsten(VI) and/or vanadium(V) compounds.
    Type: Grant
    Filed: August 12, 1985
    Date of Patent: September 29, 1987
    Assignee: BASF Aktiengesellschaft
    Inventors: Wolfgang Habermann, Peter Hammes, Hubert Engelhardt, Wolfgang Geiger, Walter Haltrich, Werner Simmler