Patents by Inventor René Gree

René Gree 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).

  • Use of a composition of an ionic nature as a substrate reagent, a composition constituting a fluorination reagent and a method using same
    Patent number: 7393980
    Abstract: The invention relates to a novel method for producing nucleophilic substitutions, particularly of type SNAr and SN2. More specifically, the invention relates to the use as a fluorinating reaction medium of ionic liquid or fused salt comprising at least four carbon atoms. The invention can be used for the synthesis of fluoride derivatives.
    Type: Grant
    Filed: May 16, 2002
    Date of Patent: July 1, 2008
    Assignee: Rhodia Chimie
    Inventors: Maxime Garayt, Virginie Le Boulaire, Danielle Gree, René Gree, Vincent Schanen, Jean-Francis Spindler