Patents by Inventor Severine Rengnet-Ferrier

Severine Rengnet-Ferrier 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).

  • Publication number: 20040129346
    Abstract: The invention relates to a method for coating metallic surfaces by a manganese-zinc phosphatizing process, using an aqueous phosphatizing solution, in which nickel is deliberately not added. Said method is characterized in that the zinc:manganese weight ratio of the phosphatizing solution is maintained in the region of between 0.05:1 and 0.99:1 and that the phosphatizing solution has the following contents: between 0.05 and 5 g/l zinc, between 0.075 and 5.2 g/l manganese and between 0.008 and 0.050 g/l copper and/or hexafluoride complexes of titanium, hafnium and/or zirconium totalling between 0.002 and 0.5 g/l, calculated as F6. The invention also relates to the use of the metal parts coated in this manner.
    Type: Application
    Filed: January 5, 2004
    Publication date: July 8, 2004
    Inventors: Thomas Kolberg, Severine Rengnet-Ferrier, Klaus Bittner, Thomas Wendel, Hardy Wietzoreck, Gerrit ` Schullermann, Jurgen Specht