Patents by Inventor Karl-Heinz Gregor

Karl-Heinz Gregor 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).

  • Patent number: 6083398
    Abstract: Process for the decoloration and the toxification of highly polluted (COD.gtoreq.1000 mg/l) resistant aqueous effluents by an oxidation treatment of the effluents by hydrogen peroxide, continuously and in a homogeneous phase, at a pH of 2 to 5 in the presence of Fe ions and under irradiation by means of UV radiation. The AvOx/COD ratio by weight is not less than 0.5:1 and the AvOx/concentration of Fe ions ratio by weight is not less than 50:1.
    Type: Grant
    Filed: November 26, 1997
    Date of Patent: July 4, 2000
    Assignee: Solvay (Societe Anonyme)
    Inventors: Michael Pittroff, Karl-Heinz Gregor, Ludwich Bettens
  • Patent number: 5762809
    Abstract: A process is proposed for the chemical oxidative treatment of a medium, e.g. sewage sludge, containing organic constituents, which comprises two process steps. In the first process step, the medium is heated to a first preset low temperature range and kept in this temperature range for a preset treatment duration. In a second process step, the sludge is then heated to a second preset low temperature range, pressurized in a preset low pressure range and kept in this temperature and pressure range for a preset treatment duration. In the course of this, an oxygen-containing gas, e.g. air or oxygen-enriched air or technical grade oxygen is introduced into the medium at least intermittently. The low temperatures and pressures provided in the two process steps are below or at most in the lower third of the temperature and pressure ranges of C. and 10-220 bar conventional in the wet-oxidation processes.
    Type: Grant
    Filed: January 21, 1997
    Date of Patent: June 9, 1998
    Assignee: SOLVAY Interox (Societe Anonyme)
    Inventors: Gerhard Luft, Karl-Heinz Gregor, Hermann Schwarz, Farsin Yadegardjam, Karl Baur