Patents by Inventor Karl Frenkenberger

Karl Frenkenberger 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).

  • Cement accelerator
    Patent number: 8545620
    Abstract: The invention relates to an inorganic binder system comprising a) calcium silicate cement, b) calcium aluminate cement, c) at least one trifunctional polyalkylene glycol and d) optionally calcium sulphate. Additionally disclosed is the use of at least one polyalkylene glycol as an accelerator for an inorganic binder system comprising a) calcium silicate cement, b) calcium aluminate cement and d) optionally calcium sulphate.
    Type: Grant
    Filed: March 7, 2011
    Date of Patent: October 1, 2013
    Assignee: Construction Research & Technology GmbH
    Inventors: Karl Frenkenberger, Stefan Köhler, Thomas Heichele, Klaus-Dieter Hötzl, Patrick Weiss, Alexander Dressen
  • Cement Accelerator
    Publication number: 20130118381
    Abstract: The invention relates to an inorganic binder system comprising a) calcium silicate cement, b) calcium aluminate cement, c) at least one trifunctional polyalkylene glycol and d) optionally calcium sulphate. Additionally disclosed is the use of at least one polyalkylene glycol as an accelerator for an inorganic binder system comprising a) calcium silicate cement, b) calcium aluminate cement and d) optionally calcium sulphate.
    Type: Application
    Filed: March 7, 2011
    Publication date: May 16, 2013
    Inventors: Karl Frenkenberger, Stefan Köhler, Thomas Heichele, Klaus-Dieter Hötzl, Patrick Weiss, Alexander Dressen