Patents by Inventor Frédéric Rudolph

Frédéric Rudolph 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).

  • Set-accelerating admixture having improved stability
    Patent number: 9023151
    Abstract: The present invention is mainly aimed at a set-accelerating admixture for hydraulic compositions comprising, in an aqueous solution, the reaction product of an alkanolamine with a concentrated strong acid; sulfate anions; and alkali or alkaline earth cations; having a pH comprised between 5 and 12. Moreover it is directed to a method for its preparation as well as to a method for preparing hydraulic compositions comprising the step for adding such an admixture to the hydraulic binder, before, during or after the grinding.
    Type: Grant
    Filed: February 6, 2013
    Date of Patent: May 5, 2015
    Assignee: Chryso
    Inventors: Bruno Pellerin, David Babayan, Frédéric Rudolph
  • SET-ACCELERATING ADMIXTURE HAVING IMPROVED STABILITY
    Publication number: 20150027347
    Abstract: The present invention is mainly aimed at a set-accelerating admixture for hydraulic compositions comprising, in an aqueous solution: the reaction product of an alkanolamine with a concentrated strong acid; sulfate anions; and alkaline or earth alkaline cations; having a pH comprised between 5 and 12. Moreover it is directed to a method for its preparation as well as to a method for preparing hydraulic compositions comprising the step for adding such an admixture to the hydraulic binder, before, during or after the grinding.
    Type: Application
    Filed: February 6, 2013
    Publication date: January 29, 2015
    Inventors: Bruno Pellerin, David Babayan, Frédéric Rudolph