Patents by Inventor Catherine Francese

Catherine Francese 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).

  • Process for perfluoroalkylation of acid anhydrides
    Patent number: 4855460
    Abstract: A process for the preparation of perfluoroalkylated ketones and/or perfluoroalkylated alcohols, comprising the step of contacting a perfluoroalkyl iodide or perfluoroalkyl bromide with an acid anhydride, in the presence of a metal chosen from zinc and cadmium.
    Type: Grant
    Filed: July 11, 1988
    Date of Patent: August 8, 1989
    Assignee: Rhone-Poulenc Chimie
    Inventors: Marc Tordeux, Claude Wakselman, Catherine Francese
  • Process for the preparation of perfluoroalkyl ketones
    Patent number: 4803298
    Abstract: A process for the preparation of a perfluoroalkyl ketone. A perfluoroalkyl halide, zinc and an ester are brought into contact with one another. Preferably a polar aprotic solvent and/or a pyridine is also present.
    Type: Grant
    Filed: July 15, 1987
    Date of Patent: February 7, 1989
    Assignee: Rhone-Poulenc Chimie
    Inventors: Catherine Francese, Marc Tordeux, Claude Wakselman
  • Process for the preparation of benzyl trifluoromethyl sulfide
    Patent number: 4788012
    Abstract: A process for the preparation of a benzyl trifluoromethyl sulfide by bringing a benzyl thiocyanate and trifluoromethyl bromide into contact with zinc in a polar aprotic solvent or a pyridine. The invention also relates to a process for the preparation of trifluoromethane sulfonyl chloride by bringing a benzyl trifluoromethyl sulfide into contact with chlorine and water.
    Type: Grant
    Filed: May 21, 1987
    Date of Patent: November 29, 1988
    Assignee: Rhone-Poulenc Chimie
    Inventors: Catherine Francese, Marc Tordeux, Claude Wakselman
  • Process for the preparation of perfluoroalkylated alcohols and esters
    Patent number: 4701569
    Abstract: A process for the preparation of perfluoroalkylated alcohols and esters by bringing a carbonyl-containing derivative and a perfluoroalkyl iodide or bromide into contact with zinc, preferably in the presence of a polar aprotic solvent and/or a pyridine.
    Type: Grant
    Filed: May 21, 1986
    Date of Patent: October 20, 1987
    Assignee: Rhone-Poulenc Specialties Chimiques
    Inventors: Catherine Francese, Marc Tordeux, Claude Wakselman