Patents by Inventor Bertrand Lavedrine

Bertrand Lavedrine 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).

  • Dosimeter for assessing degree of illumination
    Patent number: 6633374
    Abstract: A dosimeter for evaluating the degree of illumination by a change in coloration includes a substrate on which is positioned a light-sensitive coloring substance, where the coloring substance is formed of a mixture of several organic dyes dispersed in a polymer matrix and coated onto paper.
    Type: Grant
    Filed: April 13, 2001
    Date of Patent: October 14, 2003
    Assignee: Centre National de la Recherche Scientifique (C.N.R.S.)
    Inventor: Bertrand Lavedrine