Patents by Inventor Christian Hoessler

Christian Hoessler 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).

  • Bath and process for the chemical conversion of metal substrates with zinc
    Patent number: 4668307
    Abstract: Chemical conversion bath with zinc characterized by the fact that it comprises, besides the conventional constituents, an effective amount of fluorophosphate ion of the formula:F--PO.sub.3.sup.2-which can be introduced in the form of the corresponding acid, one of its alkali, alkaline-earth or ammonium salts or its zinc salt.
    Type: Grant
    Filed: December 20, 1985
    Date of Patent: May 26, 1987
    Assignee: Compagnie Francaise de Produits
    Inventors: Joseph Schapira, Victor Ken, Christian Hoessler, Louis Cot, Jean-Henri Durand, Patrice Pelletier