Patents by Inventor Annmarie KUEHN

Annmarie KUEHN 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).

  • Polycondensate based water-reducer
    Patent number: 11485683
    Abstract: The present invention relates to polycondensates containing at least a structural unit, which is an aromatic moiety bearing a polyether side chain, at least a structural unit, which is an aromatic moiety bearing at least one phosphoric acid monoester group, at least a structural unit, which is an aromatic moiety, bearing at least one hydroxy group and at least a methylene unit (—CH2—), which is attached to two aromatic structural units. The invention also concerns a process for the production of the polycondensates, their use for the dispersion of inorganic binders, for increasing the strength development of concrete and for improving the slump-retention of concrete. The invention relates also to building material mixtures comprising the polycondensates and inorganic binders.
    Type: Grant
    Filed: December 16, 2016
    Date of Patent: November 1, 2022
    Assignee: Construction Research & Technology GmbH
    Inventors: Alexander Kraus, Annmarie Kuehn, Stefanie Kuenzner
  • POLYCONDENSATE BASED WATER-REDUCER
    Publication number: 20190010090
    Abstract: The present invention relates to polycondensates containing at least a structural unit, which is an aromatic moiety bearing a polyether side chain, at least a structural unit, which is an aromatic moiety bearing at least one phosphoric acid monoester group, at least a structural unit, which is an aromatic moiety, bearing at least one hydroxy group and at least a methylene unit (—CH2—), which is attached to two aromatic structural units. The invention also concerns a process for the production of the polycondensates, their use for the dispersion of inorganic binders, for increasing the strength development of concrete and for improving the slump-retention of concrete. The invention relates also to building material mixtures comprising the polycondensates and inorganic binders.
    Type: Application
    Filed: December 16, 2016
    Publication date: January 10, 2019
    Inventors: Alexander KRAUS, Annmarie KUEHN, Stefanie KUENZNER