Patents by Inventor Rudolf F. Landriette Verhaegen

Rudolf F. Landriette Verhaegen 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).

  • Pigment dispersant resin with P-containing acid
    Patent number: 4891401
    Abstract: Acrylic polymers with carboxylic acid and small amounts of phosphorus-containing strong acids are good pigment dispersants for use in water-based coating compositions.
    Type: Grant
    Filed: March 22, 1989
    Date of Patent: January 2, 1990
    Assignee: E. I. Du Pont De Nemours and Company
    Inventors: Jozef T. Huybrechts, Guido R. Louis van den Bosch, Rudolf F. Landriette Verhaegen