Patents by Inventor Josef Gronsfeld

Josef Gronsfeld 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).

  • Determining impurities in samples
    Patent number: 4875371
    Abstract: A sample is cut from the upper region of a continuously cast ingot and rolled to compact the impurity band in a direction that was horizontal during casting.
    Type: Grant
    Filed: July 15, 1988
    Date of Patent: October 24, 1989
    Assignee: Mannesmann AG
    Inventors: Josef Gronsfeld, Hatto Jacobi, Hans-Juergen Baethmann