Patents Assigned to Henri-Davis Gutmans
  • Method for the manufacture of fodder and/or soil improving agents from waste material
    Patent number: 5312632
    Abstract: There is described a method for the manufacture of fodder and/or soil improving agents by anaerobic or aerobic fermentation of environmentally disturbing aquatic plants, specifically water hyacinth (Eichhornia crassipes), which, if desired, have been comminuted.
    Type: Grant
    Filed: August 26, 1992
    Date of Patent: May 17, 1994
    Assignees: Vertikum Magas-es Melyepitmenyjavito Kisszovetkezet, Henri-Davis Gutmans
    Inventors: Peter Simsa, Jeno Toth, Lajos Czako, Pal Mihaltz
  • Method for the manufacture of fodder and/or soil improving agents from waste material
    Patent number: 5198252
    Abstract: There is described a method for the manufacture of fodder and/or soil improving agents by anserobic or serobic fermentation of environmental disturbing aquatic plants, specifically water hyacinth (Eichhornia crassipes), which, if desired, have been comminuted.
    Type: Grant
    Filed: August 23, 1990
    Date of Patent: March 30, 1993
    Assignee: Henri-Davis Gutmans
    Inventors: Peter Simsa, Jeno Toth, Lajos Czako, Pal Mihaltz