Patents Assigned to Impermeable AS
  • Method and composition for stabilizing earth and sand to prevent soil erosion
    Patent number: 7841804
    Abstract: Method for stabilizing sand and earth by precipitation of struvite, comprising applying an aqueous solution of salts comprising: a) Mg2+ ions of a concentration 10-200 mM, b) NH4+ ions either added in the form of ammonium salt or from decomposition of added urea, of concentration 10-200 mM, c) anions added as part of corresponding cations, d) polyphosphate (Na5P3O10/Na3P3O9) of concentration 10-100 mM, e) a catalyst chosen among acidic and alkaline phosphatase.
    Type: Grant
    Filed: November 8, 2006
    Date of Patent: November 30, 2010
    Assignee: Impermeable AS
    Inventors: Terje Östvold, Tore Larsen, Öyvind Gustavsen, Katerina Kofina, Takis Paraskevas, Petros Koutsoukos, Marianna Lioliou