Patents by Inventor Charles D. de Mezerac

Charles D. de Mezerac 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).

  • Phenol-hcho-urea resin for a sizing composition, a process for its perparation and the sizing composition obtained
    Patent number: 4663419
    Abstract: A condensation product of phenol, formaldehyde and urea condensed in the presence of a basic catalyst, said condensation product being a liquid and having a free phenol content below 0.5%, a free formaldehyde content below 3%, expressed by weight based on the total weight of liquid, and a dilutability, measured at 20.degree. C., of at least equal to 1000%.
    Type: Grant
    Filed: November 19, 1984
    Date of Patent: May 5, 1987
    Assignee: Isover Saint-Gobain
    Inventors: Roger Fugier, Charles D. de Mezerac, Jacky Joachim, Michel Decagny