Patents Assigned to Industrie-Wert Beteilisungegellschaft mbH
  • Moisture reservoir for fertile soils for plants
    Patent number: 4257191
    Abstract: A granular or plate-like calcium aluminum silicate layer stores water beneath fertile soil. The silicate material may be coated with fertilizer or chemicals and may be shipped and installed within a wrapping, at least one surface of which is moisture pervious. A fleece-like material may form the pervious surface. A silicate container with a perforated cover and sidewalls fits within a planter. A filler pipe extends through the soil into the container. The silicate material may be mixed with the fertile soil.
    Type: Grant
    Filed: June 19, 1979
    Date of Patent: March 24, 1981
    Assignee: Industrie-Wert Beteilisungegellschaft mbH
    Inventors: Heinz Holter, Heinz Gresch, Heinrich Igelbuscher