Patents by Inventor Jules Hancart

Jules Hancart 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).

  • Continuous treatment of steel sheet
    Patent number: 4389254
    Abstract: Steel sheet is subjected to a thermal treatment as a result of which an oxide layer is formed. The sheet is pickled by contact with an organic acid solution (formic acid), containing at least 50 mg/l of iron, at a pH of 1.5 to 4 and at a temperature above a minimum value T.sub.m given by T.sub.m =20+(pH-1.5)32.
    Type: Grant
    Filed: April 28, 1981
    Date of Patent: June 21, 1983
    Assignee: Centre de Recherches Metallurgiques-Centrum Voor Research in de Metallurgie
    Inventors: Vittorino Tusset, Jules Hancart, Philippe Paulus
  • Surface treatment of metal strip
    Patent number: 4231812
    Abstract: Metal strip, particularly steel strip, is heated to above 250.degree. C. and quenched in a phosphating bath, at 80.degree. C. or more, containing one or more phosphates of the type Me (H.sub.2 PO.sub.4).sub.n, where Me=Zn, Ni, Mn, or an alkali metal, at a concentration of 1 to 20 g/l.
    Type: Grant
    Filed: March 13, 1979
    Date of Patent: November 4, 1980
    Assignee: Centre de Recherches Metallurgiques-Centrum voor Research in de Metallurgie
    Inventors: Philippe Paulus, Jules Hancart