Patents by Inventor Didier Clerc

Didier Clerc 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 lens presenting a graded tint
    Patent number: 8012386
    Abstract: A method of manufacturing a lens presenting a graded tint, the lens comprising first and second layers each of which is made of a thermoplastic material, with only one of the layers being colored in the tint concerned, the method including the steps of: injecting the thermoplastic material of the first layer into a first mold cavity in order to form the first layer; and placing the first layer in a second mold cavity and injecting therein the thermoplastic material of the second layer so as to form the second layer on the first layer.
    Type: Grant
    Filed: May 2, 2008
    Date of Patent: September 6, 2011
    Assignee: BNL Eurolens
    Inventor: Didier Clerc
  • Lens blank, and a method and a mold for fabricating it
    Patent number: 7703915
    Abstract: A lens blank having a base prefitted with an insert and peripheral ejector marks on the base provided outside an outermost portion of the insert. The ejector marks are carried by a tab of the base having extra thickness on the same side as the insert, and a recess in its other side, the recess forming an element for centering the spacer of an adjacent blank, which is superposed thereon.
    Type: Grant
    Filed: November 14, 2006
    Date of Patent: April 27, 2010
    Assignee: BNL Eurolens
    Inventor: Didier Clerc
  • METHOD OF MANUFACTURING A LENS PRESENTING A GRADED TINT
    Publication number: 20080277808
    Abstract: A method of manufacturing a lens presenting a graded tint, the lens comprising first and second layers each of which is made of a thermoplastic material, with only one of the layers being colored in the tint concerned, the method including the steps of: injecting the thermoplastic material of the first layer into a first mold cavity in order to form the first layer; and placing the first layer in a second mold cavity and injecting therein the thermoplastic material of the second layer so as to form the second layer on the first layer.
    Type: Application
    Filed: May 2, 2008
    Publication date: November 13, 2008
    Applicant: BNL EUROLENS
    Inventor: Didier CLERC
  • Lens blank, and a method and a mold for fabricating it
    Publication number: 20070109493
    Abstract: The invention relates to a lens blank coming from a mold having a sheet insert placed therein prior to injection, the blank including peripheral ejector marks, the marks lying outside the insert.
    Type: Application
    Filed: November 14, 2006
    Publication date: May 17, 2007
    Applicant: BNL EUROLENS
    Inventor: Didier Clerc
  • Method of manufacturing a lens presenting a graded tint
    Publication number: 20030205830
    Abstract: A method of manufacturing a lens presenting a graded tint, the lens comprising first and second layers each of which is made of a thermoplastic material, with only one of the layers being colored in the tint concerned, the method comprising the steps of:
    Type: Application
    Filed: April 22, 2003
    Publication date: November 6, 2003
    Applicant: BNL EUROLENS
    Inventor: Didier Clerc