Patents by Inventor Hans J. Semmler

Hans J. Semmler 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).

  • Single-component alkali metal silicate cement composition
    Patent number: 5296027
    Abstract: The invention relates to a dry, surfactant-free single-component alkali metal silicate cement composition containing as hardening agent condensed aluminum phosphate and at least one compound from the group comprising the ortho- and pyrophosphates of manganese, zinc, cobalt, iron(III) and chromium(III) and in addition containing the conventional components rounded quartz sand, clay, kieselguhr, mineral oil and solid powdered sodium water glass or potassium water glass.
    Type: Grant
    Filed: January 25, 1993
    Date of Patent: March 22, 1994
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Josef Ernst, Hans J. Semmler, Peter Wirtz