Patents by Inventor Ronald Berzon

Ronald Berzon 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 of manufacturing a photochromic molded article
    Patent number: 6572794
    Abstract: A method of manufacturing a photochromic molded article which comprises the steps of: filling a mold with a photopolymerizable monomer composition containing a photopolymerizable monomer, a photoinitiator and a photochromic compound capable of coloring upon UV irradiation; pre-heating the composition to a temperature which reduces or prevents coloration of the photochromic compound during the subsequent photopolymerization step; and photopolymerizing the composition under irradiation with a light comprising a UV portion and a UV-visible portion.
    Type: Grant
    Filed: July 24, 2000
    Date of Patent: June 3, 2003
    Assignee: Essilor International Compagnie Generale d'Optique
    Inventors: Ronald A. Berzon, Steve Weber, Gilles Richard, Daniel Darmes, Yassin Turshani