Patents Assigned to Altalanos Iparfejlesztesi Rt.
  • Method for producing a barrier layer in soil
    Patent number: 5120344
    Abstract: The present invention relates to a method for producing a closing layer which improves the water and nutrient retention of soils, particularly of sandy soils, characterized in that a layer of clay mineral/polymer gel capable of binding and releasing water in a reversible manner is introduced into the soil, preferably 20-60 cm below the soil surface, in such a way that a clay mineral is reacted either before or after or during activation in the presence of water, with 0.
    Type: Grant
    Filed: August 13, 1991
    Date of Patent: June 9, 1992
    Assignees: Altalanos Iparfejlesztesi Rt., Vizepitooipari Troszt
    Inventors: Oszkar Libor, Gabor Nagy, Tamas Szekely, Rudolf Mester, Kalman Kazareczki, Tibor Muller, Jeno Kiss, Zoltan Saghi, Adam Hosszu
  • Method for improving the strength and impermeability of soils and engineering structures
    Patent number: 4988238
    Abstract: A method is disclosed for improving the strength and impermeability of soils or engineering structures, which comprises the steps of:(a) applying to the site of the soil or of the engineering structure, an alkaline water glass solution comprising water glass in an amount of 15 to 40% by weight, calculated as dry substance;(b) allowing a time period to pass sufficient to permit the alkali present in the water glass solution to move by diffusion;(c) applying to the same site as in step (a), a silicic acid sol comprising SiO.sub.
    Type: Grant
    Filed: October 31, 1989
    Date of Patent: January 29, 1991
    Assignee: Altalanos Iparfejlesztesi Rt.
    Inventors: Tamas Szekely, Gabor Nagy, Andras Danko, Janos Szepvolgyi, Andras Gal, Oszkar Libor