Patents by Inventor Marian Pawlik

Marian Pawlik 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).

  • Two-stage conversion treatment
    Publication number: 20070017602
    Abstract: The invention relates to a chromium-free, corrosion prevention treatment for steel, zinc or zinc alloys, aluminum, magnesium or alloys thereof in which the metal surfaces are contacted in a first step with a first aqueous solution having a pH of 1.5 to 5 which contains Ti and/or Zr and/or Si ions and at least such a quantity of fluoride that the atomic ratio of Ti to F and/or Zr to F and/or Si to F is in the range from 1:1 to 1:6 and then, optionally after rinsing with water, and thereafter in a second step are contacted with a second aqueous solution having a pH of 1.5 to 5 which contains Ti and/or Zr and/or Si ions and at least such a quantity of fluoride that the atomic ratio of Ti to F and/or Zr to F and/or Si to F is in the range from 1:1 to 1:6, and which additionally contains such a quantity of soluble anions of oxo acids of Mo (VI) and/or W (VI) that the total concentration of molybdenum and/or tungsten is in the range from 5 to 1500 mg/l.
    Type: Application
    Filed: June 9, 2006
    Publication date: January 25, 2007
    Inventors: Alina Koch, Marian Pawlik, Heike Quellhorst, Patrick Droniou
  • Anticorrosive agent and corrosion protection process for metal surfaces
    Publication number: 20040151619
    Abstract: An agent and process for the corrosion protection treatment of a metal surface are provided.
    Type: Application
    Filed: December 11, 2003
    Publication date: August 5, 2004
    Inventors: Heike Quellhorst, Alina M. Koch, Patrick Droniou, Marian Pawlik