Patents by Inventor Rainer Tarmann

Rainer Tarmann 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 casting steel ingots under a vacuum
    Patent number: 4037644
    Abstract: A process for casting steel ingots, wherein the steel from a ladle is cast under vacuum through the lid of a container which can be evacuated, into a mould, and wherein covering powder or anti-piping compound, respectively, is evenly applied upon the surface of the molten steel in the mould while the vacuum is maintained.
    Type: Grant
    Filed: September 16, 1975
    Date of Patent: July 26, 1977
    Assignee: Vereinigte Edelstahlwerke Aktiengesellschaft (VEW)
    Inventors: Rainer Tarmann, Walter Hopf