Patents Assigned to Preentec AG
  • Patent number: 8951574
    Abstract: The invention relates to products, containing a solid biocide and a composite material (11) for the absorption of contaminants and the release of active ingredients as a composite preparation for the simultaneous, separate or programmed sequential application on sterilization and long-term conservation of a liquid (6) for purification. According to the invention, the activity of the solid biocide can be maintained by additionally treating the liquid (6) with the composite material (11), which absorbs (5.1, 5.2) from which the liquid and/or contaminants simultaneously releases active ingredients (13.1, 13.2) for sterilizing and/or reducing the contaminants (5.1, 5.2) in the liquid (6). The products and the method are particularly suitable for sterilizing and long-term conservation of water/oil emulsions which are contaminated by sulphur-containing compounds.
    Type: Grant
    Filed: December 20, 2007
    Date of Patent: February 10, 2015
    Assignees: Bucher AG Langenthal, Preentec AG
    Inventors: Martin Christian Adrian Gehri, Bernhard Keller, Peter Regenass
  • Patent number: 7833796
    Abstract: The invention concerns materials and methods used for the concentration, desalination, purification or stabilization of biological compounds, in particular biological macromolecules and supramolecular structures, by means of superabsorbent polymers or superabsorptive composite materials.
    Type: Grant
    Filed: December 15, 2004
    Date of Patent: November 16, 2010
    Assignee: Preentec AG
    Inventors: Rene Pellaux, Jens-Martin Heile, Andreas Josef Schenzle, Martin Held
  • Publication number: 20070111194
    Abstract: The invention concerns materials and methods used for the concentration, desalination, purification or stabilization of biological compounds, in particular biological macromolecules and supramolecular structures, by means of superabsorbent polymers or superabsorptive composite materials.
    Type: Application
    Filed: December 15, 2004
    Publication date: May 17, 2007
    Applicant: PREENTEC AG
    Inventors: Rene Pellaux, Jens-Martin Heile, Andreas Schenzle, Martin Held