Patents by Inventor Heinz Schürch

Heinz Schürch 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).

  • Solidification and hardening accelerator for hydraulic binders and process for its preparation
    Patent number: 8221543
    Abstract: The present invention relates to a fluoride-free solidification and hardening accelerator for hydraulic binders, comprising sulfate, aluminum and organic acid, the molar ratio of aluminum to sulfate being less than 0.83.
    Type: Grant
    Filed: February 13, 2008
    Date of Patent: July 17, 2012
    Assignee: Sika Technology AG
    Inventors: Heinz Schürch, Franz Wombacher, Benedikt Lindlar, Didier Lootens, Robert Flatt