Patents by Inventor Hans-Jorg Topfer, deceased

Hans-Jorg Topfer, deceased 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).

  • Method of manufacturing rolled wire rod
    Patent number: 4222257
    Abstract: A method and apparatus of manufacturing wire rod having a content of silicon and manganese greater than 1.5% is described, wherein the average final rolling temperature in processing the rod is from 870.degree. C. to 970.degree. C. and the rod is cooled in an extended position. The composition of steels utilized in the method is also described.
    Type: Grant
    Filed: November 7, 1977
    Date of Patent: September 16, 1980
    Assignee: Hamburger Stahlwerke GmbH
    Inventors: Klaus Theis, Eckehard Forster, Wolfram Becher, Hans-Jorg Topfer, deceased