Patents by Inventor Kathrin Choyna

Kathrin Choyna 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).

  • Foamlike mineral building and structural material as well as a method of producing a mineral foam and an apparatus for carrying out this method
    Patent number: 6497945
    Abstract: The present invention relates to a foamlike mineral building and structural material based on a substantially uniformly foamed alkali-silicate and/or ammonium-silicate matrix encompassing an open and/or closed porous structure. In addition, the present invention relates to a method of producing a foamlike mineral building and structural material comprising the following steps: adjusting the water content of the alkali-silicate and/or ammonium-silicate starting material to a specific value, and foaming the pretreated alkali-silicate and/or ammonium-silicate material, and to an apparatus for carrying out the method which comprises: a conditioner for adjusting the water content of the alkali-silicate and/or ammonium-silicate starting material and a heating means for the foaming step.
    Type: Grant
    Filed: March 2, 2000
    Date of Patent: December 24, 2002
    Inventors: Peter Niedner, Matthias Franke, Kathrin Choyna