Patents by Inventor Siegfried Zurn

Siegfried Zurn 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).

  • Cementitious system comprising accelerator particles coated with crosslinked shellac
    Patent number: 9428419
    Abstract: A proposal is made for a cementitious system which comprises accelerator particles coated with crosslinked shellac, for the use as an additive component which comprises the accelerator particles coated with crosslinked shellac, and for a cement slurry which comprises the cementitious system and water.
    Type: Grant
    Filed: May 21, 2014
    Date of Patent: August 30, 2016
    Assignee: Construction Research & Technology GmbH
    Inventors: Wolfgang Seidl, Steffen Wache, Werner Stohr, Siegfried Zürn, Joachim Riedmiller, Volker Schwarz
  • CEMENTITIOUS SYSTEM COMPRISING ACCELERATOR PARTICLES COATED WITH CROSSLINKED SHELLAC
    Publication number: 20160122245
    Abstract: A proposal is made for a cementitious system which comprises accelerator particles coated with crosslinked shellac, for the use as an additive component which comprises the accelerator particles coated with crosslinked shellac, and for a cement slurry which comprises the cementitious system and water.
    Type: Application
    Filed: May 21, 2014
    Publication date: May 5, 2016
    Inventors: Wolfgang SEIDL, Steffen WACHE, Werner STOHR, Siegfried Zurn, Joachim RIEDMILLER, Volker SCHWARZ