Patents by Inventor Henri Fencki

Henri Fencki 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).

  • Patent number: 4175027
    Abstract: In a process for recovering zinc from residues containing it, particularly rom ashes and hard-spelters coming from galvanizing baths, and which comprises the extraction by electrolysis of the zinc contained in the alkaline or acid solutions obtained. The solutions deriving from the ashes are obtained by dissolving their relatively low metallic zinc content granulometric fraction, the high metallic zinc content granulometric fraction of these ashes being re-introduced directly into the galvanizing bath advantageously after a leaching treatment and the solutions deriving from the hard-spelters are obtained by dissolving them either by having recourse to a corrosion cell or by forming by means of these hard-spelters the anodes of an electrolysis circuit.
    Type: Grant
    Filed: September 9, 1977
    Date of Patent: November 20, 1979
    Assignee: Societe d'Etudes pour la Recuperation Electrolytique du Zinc
    Inventors: Jean-Claude Catonne, Jean Royon, Maurice Bonnemay, Marie-Therese Descarsin, Marcel Bernard-Maugiron, Henri Fencki, Jean-Francois Fayolle