Patents Assigned to Ytong Aktiengesellschaft
  • Process for the manufacture of construction materials
    Patent number: 5788761
    Abstract: A process in which the conventional sulfate components in an aerated concrete mixture, such as gypsum, semihydrate or anhydrite, are replaced at least in part by calcium aluminum sulfates and/or calcium aluminate sulfate hydrates. As a result, agglomeration of the lime, retardation of the lime hydration, and aftergrowth of the cut aerated concrete cakes are reduced or even ruled out. In addition, the number of molds used can be reduced with the process in accordance with the invention, whereby the use of one single mold is achievable.
    Type: Grant
    Filed: October 15, 1996
    Date of Patent: August 4, 1998
    Assignee: Ytong Aktiengesellschaft
    Inventors: Dieter Hums, Klaus F. Lippe