Patents by Inventor Eric Freon

Eric Freon 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 making an object made of translucent synthetic material, in particular an ophthalmic lens, marked object and corresponding reader
    Patent number: 6188040
    Abstract: A translucent synthetic material article such as an ophthalmic lens comprises a plurality of well-shaped cells, some of which have at least one upstanding projection on their bottom walls. The projection have a height between 1/5 and 1/1 the cell depth and are upwardly tapering and wedge-shaped. The plurality of cells are arranged in rows and columns to define a matrix. When the translucent article is illuminated, the well-shaped cells with upstanding projections display enhanced contrast compared with such cells without upstanding projections, thereby producing an identification marking or the like.
    Type: Grant
    Filed: October 15, 1998
    Date of Patent: February 13, 2001
    Assignee: Essilor International Compagnie Generale d'Optique
    Inventors: Daniel Darmes, Gilles Lefebvre, Sylvie Maze, Eric Freon, Francis Bell