Patents by Inventor Joel Bonnin

Joel Bonnin 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).

  • Composition containing materials improving the rheological properties of cement-based products
    Patent number: 5567236
    Abstract: Composition adapted to improve the rheological properties of cement-based products and more especially to increase the duration of the workability of concrete ready to use, characterized in that it comprises, in the form of a ternary mixturea superplasticizing or water-reducing agent having a dispersing effect,a stabilizing agent capable of forming a chelate with the calcium ions of the cement-based product, anda polycarboxylic polymer dispersing agent.
    Type: Grant
    Filed: December 28, 1993
    Date of Patent: October 22, 1996
    Assignee: C F P I
    Inventors: Joseph Schapira, Jean-Claude Cheminaud, Jean-Jacques Gasse, Eric Hadzamann, Joel Bonnin