Patents by Inventor Philippe Chicart

Philippe Chicart 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).

  • Benzophenones containing an ester functional group and their use in polymers
    Patent number: 5281645
    Abstract: The present invention relates to new hydroxybenzophenones containing an ester functional group and to the use of these compounds as UV absorbers in organic polymers. More precisely, the new hydroxybenzophenones are 1,3-di(4-benzoyl-3-hydroxyphenoxy)-2-propanol carboxylates which preferably have a molecular mass of at least 500.These benzophenones can be employed as anti-UV agents in organic polymers, either by themselves or jointly with known benzophenones of lower molecular mass, such as 2-hydroxy-4-alkoxybenzophenones.
    Type: Grant
    Filed: July 24, 1992
    Date of Patent: January 25, 1994
    Assignee: Rhone-Poulenc Chimie
    Inventors: Philippe Chicart, Michel Gay