Patents by Inventor Michel D. Létourneau

Michel D. Létourneau 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).

  • One-pass method for preparing paper size emulsions
    Patent number: 6296696
    Abstract: A one-pass, non-tolerance dependent method for preparing paper size emulsions comprising an aqueous emulsion of a substituted cyclic dicarboxylic anhydride, a colloidal stabilizer, and a surfactant wherein the emulsion after one-pass through a dispersion system has an average particle size of less than 2 microns.
    Type: Grant
    Filed: December 15, 1998
    Date of Patent: October 2, 2001
    Assignee: National Starch & Chemical Investment Holding Corporation
    Inventors: Michel D. Létourneau, Walter Maliczyszyn