Patents by Inventor Rudolf Schoenemann

Rudolf Schoenemann 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).

  • Method of processing steel strip using a rolling oil emulsion containing SiO.sub.2 as a stabilized silicic acid sol
    Patent number: 4152916
    Abstract: A method for processing steel strip, which comprises cold-rolling the steel strip, coiling the rolled steel strip and annealing the coiled steel strip, wherein a rolling oil emulsion containing 0.1 to 5 percent by weight of SiO.sub.2 in the form of stabilized silicic acid sol and having a pH value between 5.0 and 9.0 is applied to the steel strip prior to coiling and the rolling oil emulsion so employed.
    Type: Grant
    Filed: June 2, 1977
    Date of Patent: May 8, 1979
    Assignee: Henkel Kommanditgesellschaft auf Aktien (Henkel KGaA)
    Inventors: Yves Guinomet, Ulrich Tenhaven, Wilhelm Wrede, Rudolf Schoenemann, Wolfgang Friedemann, Heinz Groschopp, Hans G. Germscheid
  • Surface pretreatment of steel prior to enameling
    Patent number: 3956536
    Abstract: A method for the surface treatment of steel, preferably non-decarburized steel, capable of being enameled comprises the steps of degreasing the metal surface; optionally descaling the metal surface in an acid bath; treating the metal surface with an aqueous solution containing from 0.1% to 5% by weight of at least one complex former which prevents the precipitation of heavy metal cations at the pH employed; intensively pickling the metal surface; and nickelplating the metal surface.
    Type: Grant
    Filed: November 25, 1974
    Date of Patent: May 11, 1976
    Assignee: Henkel & Cie G.m.b.H.
    Inventors: Rudolf Schoenemann, Rudolf Reitzenstein