Patents by Inventor Werner Schmitt

Werner Schmitt 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).

  • Mixing liquid for silicate cements
    Patent number: 3986998
    Abstract: Dental cements are prepared by mixing a silicate powder with an aqueous solution of polymers of unsaturated alpha, beta-dicarboxylic acids.
    Type: Grant
    Filed: October 10, 1973
    Date of Patent: October 19, 1976
    Assignee: ESPE, Fabrik Pharmazeutischer Praparate GmbH
    Inventors: Werner Schmitt, Robert Purrmann, Peter Jochum, Wolf-Dieter Zahler, Rainer Grimm-Lenz