Patents by Inventor Jean-Claude Meslard

Jean-Claude Meslard 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 manufacture of a lens of transparent polymer having a modulated refractive index
    Patent number: 5258024
    Abstract: The present invention relates to a method of manufacture of an optical lens providing refractive index modulation, characterized in that, starting from a lens of transparent hydrophilic polymer preferably of the hydrogel type, which has previously been shaped, the lens is impregnated with a photopolymerizable composition containing at least one monomer and a photoinitiator, which are in solution in water in the case of a hydrogel, the impregnated lens is subjected to locally modulated irradiation so as to cause local selective polymerization of the monomer, whereupon the excess non-hardened photoinitiator and non-pulverizable monomer is removed.
    Type: Grant
    Filed: February 14, 1991
    Date of Patent: November 2, 1993
    Assignee: Essilor International (Compaigne Generale d'Optique)
    Inventors: Pierre Chavel, Denis Joyeux, Daniel Lougnot, Dominique Baude, Jean-Claude Meslard, Jean Taboury
  • Artificial optical lens and method of manufacturing it
    Patent number: 5172143
    Abstract: The manufacture of an artificial optical lens having any given power profile starts from an artificial optical lens having a different power profile. A physical-chemical treatment method modifies the power profile to obtain a required power profile. A rotating mask is used for spatial modulation of the energy flux.
    Type: Grant
    Filed: January 15, 1991
    Date of Patent: December 15, 1992
    Assignee: Essilor International Cie Generale d'Optique
    Inventors: Dominique Baude, Jean-Claude Meslard, Gerard Obrecht, Pierre Chavel, Denis Joyeux, Jean Taboury