Patents by Inventor Jean Gascon

Jean Gascon 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).

  • N-Thioureido and N-ureido phenylene diamines and method of preparing same
    Patent number: 4008272
    Abstract: Dye compositions containing the oxidation dye: ##STR1## and the method of using it to dye live human hair.
    Type: Grant
    Filed: May 16, 1975
    Date of Patent: February 15, 1977
    Assignee: Societe Anonyme dite: L'Oreal
    Inventors: Gregoire Kalopissis, Jean Gascon, Andree Bugaut, Jacqueline Gallien, Hubert Gaston-Breton