Patents by Inventor Andras Danko

Andras Danko 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).

  • 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