Patents by Inventor Mathieu Gratas

Mathieu Gratas 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).

  • Use of dispersants to improve the retention of fluidity of concrete
    Publication number: 20060266977
    Abstract: The invention relates to the use of polycarboxylates of polyoxyalkylene for the production of compositions of concrete wit a slump value T0 of between 12 and 20 cm inclusive, for improving the retention of fluidity with time. The invention further relates to fresh concrete compositions with such a slump value containing said dispersant.
    Type: Application
    Filed: April 9, 2004
    Publication date: November 30, 2006
    Applicant: CHRYSO
    Inventors: Isabelle Dubois-Brugger, Mathieu Gratas, Olivier Malbault, Martin Mosquet