Patents by Inventor Johann Gerdenitsch

Johann Gerdenitsch 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).

  • MANUFACTURING GALVANNEALED SHEETS BY HEAT-TREATING ELECTROLYTICALLY FINISHED SHEETS
    Publication number: 20120279868
    Abstract: The invention relates to a method for manufacturing a steel strip with a cathodic corrosion protection coating, in which the steel strip is hot rolled and then cold rolled; the steel strip is subjected to an electrolytic galvanization and after the electrolytic galvanization, the steel strip is heat treated in a bell-type annealing furnace at temperatures of 250° C. to 350° C. for a period of 4 to 48 hours and this produces a zinc/iron layer.
    Type: Application
    Filed: September 13, 2010
    Publication date: November 8, 2012
    Applicant: VOESTALPINE STAHL GMBH
    Inventors: Johann Gerdenitsch, Josef Faderl
  • Method for the electrolytic deposition of chromium and chromium alloys
    Publication number: 20110272285
    Abstract: The invention relates to a method for depositing chromium and/or chromium alloys on metals, and particularly on sheet steel, wherein an alloy layer is electrolytically deposited on the metal from a solution containing chromium ions and/or chromium ions and further metal ions such as Zn, Cd, In, Pb, Bi, Mo, Cu, Fe, Ni, Co, Mn, Al, Sb, Ag, Sn, Mg, wherein chromium hydroxide precipitated from a chromium (III) solution is used for regenerating the electrolyte solution using chromium (III) ions.
    Type: Application
    Filed: September 30, 2009
    Publication date: November 10, 2011
    Applicant: VOESTALPINE STAHL GMBH
    Inventors: Johann Gerdenitsch, Alexander Tomandl
  • CORROSION PROTECTIVE LAYER WITH IMPROVED CHARACTERISTICS
    Publication number: 20100068555
    Abstract: The invention relates to a corrosion-protective layer for protecting steel substrates from corrosion, comprising a zinc-chromium layer applied on the steel substrate by electrolytic joint deposition of zinc and chromium ions, and a chromate-free organic thin layer applied thereon, substantially comprising synthetic resins, and to a method for improving the paint adhesion of a zinc-chromium corrosion-protective layer.
    Type: Application
    Filed: July 17, 2007
    Publication date: March 18, 2010
    Applicant: VOESTALPINE STAHL GMBH
    Inventors: Alexander Tomandl, Johann Gerdenitsch