Patents by Inventor Matthias Liess

Matthias Liess 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: 8915013
    Abstract: The invention relates to a method for the eradication and killing of microorganisms from among insects and worms in an aqueous system, especially for the control and eradication of the larvae. A sustained reduction or killing of the larvae is achieved by a two-step method in which insecticides and a zooplankton community are used as biological agents. The insecticides specifically kill the larvae present in the aqueous system. The biological agents, which according to the invention preferably comprise competitors for food of the above microorganisms/larvae, prevent repopulation. The combined use of insecticidal and biological treatment in aqueous systems allows an efficient and permanent eradication.
    Type: Grant
    Filed: November 12, 2009
    Date of Patent: December 23, 2014
    Assignee: Helmholtz-Zentrum fur Umweltforschung GmbH
    Inventors: Matthias Liess, Sabine Duquesne
  • Publication number: 20110308138
    Abstract: The invention relates to a method for the eradication and killing of microorganisms from among insects and worms in an aqueous system, especially for the control and eradication of the larvae. A sustained reduction or killing of the larvae is achieved by a two-step method in which insecticides and a zooplankton community are used as biological agents, The insecticides specifically kill the larvae present in the aqueous system. The biological agents, which according to the invention preferably comprise competitors for food of the above microorganisms/larvae, prevent repopulation. The combined use of insecticidal and biological treatment in aqueous systems allows an efficient and permanent eradication.
    Type: Application
    Filed: November 12, 2009
    Publication date: December 22, 2011
    Applicant: Helmholtz-Zentrum fur Umweltforschung GmbH
    Inventors: Matthias Liess, Sabine Duquesne