Patents by Inventor Hartmut Meyer-Grunow

Hartmut Meyer-Grunow 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).

  • Process for the introduction of nitrogen into cast iron
    Patent number: 4970051
    Abstract: The present invention provides an agent for the introduction of nitrogen into cast iron, wherein it contains or consists of at least 50% by weight of at least one nitrogen-containing compound with an N--C--N structure and/or a mixture of calcium cyanamide with nitrides of silicon, ferrosilicon, manganese and chromium.The present invention also provides a process for the introduction of nitrogen into cast iron using this agent.
    Type: Grant
    Filed: September 30, 1988
    Date of Patent: November 13, 1990
    Assignees: SKW Trostberg Aktiengesellschaft, Halbergerhuette GmbH
    Inventors: Friedrich Wolfsgruber, Hartmut Meyer-Grunow, Detlef Missol, Jochem Richter, Julius Veit
  • Rapidly dissolving additive for molten metal method of making and method of using
    Patent number: 4880462
    Abstract: The present invention provides a rapidly dissolving additive for molten metal, wherein it contains 2 to 50% by weight of a component A, which consists of an alkali metal aluminium fluoride and/or an alkali metal aluminium fluoride-containing salt mixture, and 50 to 98% by weight of a component B, which consists of at least one alloying metal, the alloying metal being different from the base metal to be allied, the components A and B being present intimately mixed.The present invention also provides a process for the production of this additive.
    Type: Grant
    Filed: March 9, 1988
    Date of Patent: November 14, 1989
    Assignee: SKW Trostberg Aktiengesellschaft
    Inventor: Hartmut Meyer-Grunow
  • Method of using rapidly dissolving additives for metal melts
    Patent number: 4729874
    Abstract: The present invention provides a rapidly dissolving additive for metal melts, wherein it contains or consists of 2 to 50% by weight of a powdered component A, consisting of magnesium and/or a magnesium-containing alloy, and 50 to 98% by weight of a powdered component B, consisting of one or more alloying metals, the components A and B being intimately mixed and being present in pressed or compacted form.
    Type: Grant
    Filed: July 31, 1986
    Date of Patent: March 8, 1988
    Assignee: SKW Trostberg Aktiengesellschaft
    Inventor: Hartmut Meyer-Grunow