Patents by Inventor Jean-Claude Dauguet

Jean-Claude Dauguet 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 for determining the suitability of a transparent moulded polymer article for coloring without defects and resulting article
    Patent number: 6929368
    Abstract: The method comprises: a) placing in contact at least one principal surface of the colourless articles of the set with a solution of a fluorescent material for a sufficient time to allow penetration of the fluorescent material under the principal surface of the article; b) irradiation of the impregnated articles by means of radiation which activates the fluorescence of the fluorescent material; and c) selection of the articles in the set into two sub-sets of which the first is composed of those articles of the set which show a homogeneous fluorescence of their principal surfaces under irradiation and the second is composed of those articles of the set which show a non-homogeneous fluorescence of their principal surfaces under irradiation. Application: to opthalmic lenses.
    Type: Grant
    Filed: October 5, 2001
    Date of Patent: August 16, 2005
    Assignee: Essilor International Compagnie Generale d'Optique
    Inventors: Gilles Massey, Jean-Claude Dauguet
  • Method for determining the suitability of a transparent moulded polymer article for colouring without defects and resulting article
    Publication number: 20020081375
    Abstract: The method comprises:
    Type: Application
    Filed: October 5, 2001
    Publication date: June 27, 2002
    Applicant: ESSILOR INTERNATINAL COMPAGNIE GENERALE d'OPTIQUE
    Inventors: Gilles Massey, Jean-Claude Dauguet
  • Polishing material for ophthalmic lenses
    Patent number: 4222747
    Abstract: The invention relates to a polishing material of the type containing powdered cerium oxide suspended in water.According to the invention, this polishing material also contains, in combination, a substance for use as a thickener and a substance for reducing the surface tension.The polishing material is particularly useful for polishing ophthalmic lenses made from organic materials.
    Type: Grant
    Filed: December 27, 1978
    Date of Patent: September 16, 1980
    Assignee: Essilor International, Cie Generale d'Optique
    Inventors: Jean-Claude Dauguet, Jean-Pierre Mazzone, Pierre Moreau