Patents by Inventor Watt Olivier

Watt Olivier 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).

  • Method for inerting impurities
    Patent number: 8257490
    Abstract: The invention concerns a method for inerting clays in sand intended for preparing hydraulic compositions, comprising a step which consists in adding to the composition or one of its constituents a cationic polymer having a cationic charge density more than 0.5 meq/g and an intrinsic viscosity less than 1 dg/l.
    Type: Grant
    Filed: September 21, 2005
    Date of Patent: September 4, 2012
    Assignee: Lafarge
    Inventors: Jacquet Alain, Villard Emmanuel, Watt Olivier
  • Method for Inerting Impurities
    Publication number: 20070287794
    Abstract: The invention concerns a method for inerting clays in sand intended for preparing hydraulic compositions, comprising a step which consists in adding to the composition or one of its constituents a cationic polymer having a cationic charge density more than 0.5 meq/g and an intrinsic viscosity less than 1 dg/l.
    Type: Application
    Filed: September 21, 2005
    Publication date: December 13, 2007
    Applicant: LAFARGE
    Inventors: Jacquet Alain, Villard Emmanuel, Watt Olivier