Patents by Inventor Matthias Dahlem

Matthias Dahlem 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).

  • Patent number: 9611527
    Abstract: A method by which a flat steel product containing 2-35 wt. % of Mn can be provided with a coating of Zn which adheres well by annealing at an annealing temperature Ta of 600-1100° C. for an annealing time of 10-240 s under an annealing atmosphere which has a reducing effect on the FeO present on the flat steel product and an oxidizing effect on the Mn contained in the steel substrate thereby forming a layer of Mn mixed oxide which covers the flat steel product at least in sections and then cooling the flat steel product to a temperature for bath entry and conveying it through a bath of molten Zn saturated within iron at a temperature of 420-520° C., within a dip time of 0.1-10 s.
    Type: Grant
    Filed: April 22, 2010
    Date of Patent: April 4, 2017
    Assignee: ThyssenKrupp Steel Europe AG
    Inventors: Manfred Meurer, Martin Norden, Wilhelm Warnecke, Marc Blumenau, Matthias Dahlem, Jennifer Schulz, Klaus Josef Peters
  • Publication number: 20120125491
    Abstract: A method by which a flat steel product containing 2-35 wt. % of Mn can be provided with a coating of Zn which adheres well by annealing at an annealing temperature Ta of 600-1100° C. for an annealing time of 10-240 s under an annealing atmosphere which has a reducing effect on the FeO present on the flat steel product and an oxidising effect on the Mn contained in the steel substrate thereby forming a layer of Mn mixed oxide which covers the flat steel product at least in sections and then cooling the flat steel product to a temperature for bath entry and conveying it through a bath of molten Zn saturated within iron at a temperature of 420-520° C., within a dip time of 0.1-10 s.
    Type: Application
    Filed: April 22, 2010
    Publication date: May 24, 2012
    Applicant: THYSSENKRUPP STEEL EUROPE AG
    Inventors: Manfred Meurer, Martin Norden, Wilhelm Warnecke, Marc Blumenau, Matthias Dahlem, Jennifer Schulz, Klaus Josef Peters